Steering Wheel & Steering Column Cadillac Escalade GMT900

Fastener Tightening Specifications

Scheme 1

Scheme 2

Scheme 3

Scheme 4

DIAGNOSTIC CODE INDEX

DIAGNOSTIC CODE INDEX

Diagnostic Instructions

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach
3. «Diagnostic Procedure Instructions»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category

Diagnostic Fault Information

Circuit Description

The memory seat module (MSM) receives voltage inputs from the tilt switch based on the position of the switch. The MSM then supplies battery voltage and a ground to the tilt motor control circuits depending on which direction of movement is requested.

Conditions for Running the DTC

The ignition ON.

Conditions for Setting the DTC

The MSM detects a tilt switch input for more than 30 consecutive seconds after the tilt motor movement has stopped.

Action Taken When the DTC Sets

1. The tilt motor will be deactivated.
2. Memory recall functions will be disabled.

Conditions for Clearing the DTC

1. A current DTC will clear when the failed switch input is no longer active.
2. A history DTC will clear after 100 ignition cycles.

Diagnostic Aids

An intermittently stuck tilt switch may cause a DTC to set.

Reference Information

Schematic Reference

Steering Wheel Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Steering Wheel and Column Description and Operation

Electrical Information Reference

1. «Circuit Testing»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for Scan Tool Information

Circuit/System Verification

Ignition ON,observe the scan tool Tilt Up Switch parameter and Tilt Down Switch parameter while cycling the switch between states.The reading should be Inactive and change to Active when pushing the appropriate switch.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the tilt switch.
2. Ignition ON, verify a test lamp illuminates between the B+ circuit terminal B and ground. If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
3. Verify the scan tool tilt switch parameter is Inactive. If not the specified value, test the control circuit listed below for a short to voltage. If the circuit tests normal, replace the MSM. Tilt Up Switch terminal C Tilt Down Switch terminal A
4. Install a 3A fused jumper wire between the control circuits listed below and the B+ circuit terminal. Verify the scan tool tilt switch parameter is Active. Tilt Up Switch terminal C Tilt Down Switch terminal A If not the specified value, test the appropriate control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the MSM.
5. If all circuit test normal, test or replace the tilt switch.

Component Testing

Tilt Switch

1. Ignition OFF, disconnect the harness connector at the tilt switch.
2. Test for infinite resistance between the control terminals A and C with the switch in the neutral position. If less than the specified range, replace the tilt switch.
3. Test for less than 1 ohm between the control terminals listed below and the B+ terminal B with the switch in each appropriate position. Tilt Up Switch terminal C Tilt Down Switch terminal A

1. If greater than the specified value, replace the tilt switch.

Repair Procedures

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Steering Column Tilt Wheel Switch Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column)
2. «Control Module References»(/cadillac/escalade/gmt900-2006-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for MSM replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The memory seat module (MSM) determines the position of the steering column based on inputs received from the tilt position sensors built into the tilt actuators. The MSM supplies a 5-volt reference and a low reference to the sensors and monitors the column position via the steering column tilt sensor signal circuit.

Ignition ON

B2880 01

The steering column tilt sensor signal voltage is greater than 4.8 volts for more than 2 seconds.

B2880 06

The steering column tilt sensor signal voltage is less than 0.2 volt for more than 2 seconds.

B2880 5A

An incorrect steering column tilt sensor signal voltage is seen.

B2880 61

The steering column tilt sensor signal voltage does not change when the tilt actuator is commanded.

Steering column tilt operations are suspended.

1. A current DTC will clear when the malfunction is no longer present
2. A history DTC will clear after 50 malfunction-free ignition cycles.

Schematic Reference

Steering Wheel Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Steering Wheel and Column Description and Operation

Electrical Information Reference

1. «Circuit Testing»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for Scan Tool Information

Ignition ON, command the tilt motor UP and DOWN with a scan tool. The reading should be between 0.2 and 4.8 volts.

Tilt Sensor Circuit Malfunction

1. Ignition OFF, disconnect the harness connector at the tilt actuator.
2. Ignition OFF, test for less than 10.0 ohms between the low reference circuit terminal E and ground. If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the MSM.
3. Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal D and ground. If less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the MSM. If greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the MSM.
4. Verify the scan tool Tilt Sensor parameter is less than 0.2 volt. If greater than the specified range, test the signal circuit terminal C for a short to voltage. If the circuit tests normal, replace the MSM.
5. Install a 3A fused jumper wire between the signal circuit terminal C and the 5-volt reference circuit terminal D. Verify the scan tool Tilt Sensor parameter is greater than 4.8 volts. If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the MSM.
6. Install a test lamp between the control circuit terminal A and the control circuit terminal B.
7. Command the column to tilt up and down using the tilt switch. The test lamp should illuminate with each command. If the test lamp does not illuminate, test both control circuits for a short to ground or an open/high resistance. If the circuits test normal, replace the MSM.
8. If all circuits test normal, test or replace the tilt actuator.

Tilt Actuator

1. Ignition OFF, disconnect the harness connector at the tilt actuator.
2. Test for less than 2.0 ohms between the control terminal A and the control terminal B. If greater than the specified range, replace the tilt actuator.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Tilt Motor Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column)
2. «Control Module References»(/cadillac/escalade/gmt900-2006-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for MSM replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The memory seat module (MSM) learns tilt soft stops approximately 1.3 cm (0.5 in) from the mechanical ends of travel. The system uses soft stops to prevent wear on the system by ensuring that the steering column movement stops before it reaches its mechanical end of travel in any direction. The soft stops are initially programmed at the factory. The stop positions may be reprogrammed, which is necessary any time the MSM is replaced.

Ignition ON.

The soft stops have not been learned.

1. The tilt motor will be deactivated.
2. Memory recall functions will be disabled.

1. A current DTC will clear when the soft stops have been learned.
2. A history DTC will clear after 100 ignition cycles.

Schematic Reference

Steering Wheel Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Steering Wheel and Column Description and Operation

Electrical Information Reference

1. «Circuit Testing»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for Scan Tool Information

1. Ignition ON, perform the scan tool Learn Column Soft Stops procedure. Refer to «Power Tilt Steering Column Calibration»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
2. Operate the vehicle within the Conditions for Running and Setting. Verify DTC B2890 does not reset. If the DTC resets, replace the MSM.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for MSM replacement, setup, and programming

Symptoms - Steering Wheel and Column

Review the system description and operation in order to familiarize yourself with the system functions. Refer to Steering Wheel and Column Description and Operation .

Visual/Physical Inspection

1. Inspect for aftermarket devices which could affect the operation of the steering wheel and column.
2. Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Symptoms List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom

1. «Steering Column Tilt Function Inoperative»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column__steering-column-tilt-function-inoperative)
2. «Ignition Key Cannot Be Removed from the Ignition Lock Cylinder»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__ignition-key-cannot-be-removed-from)
3. «Ignition Key Cannot Turn or Sticks in Any Position»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__ignition-key-cannot-turn-or-sticks)
4. «Noise in Steering Column»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column__noise-in-steering-column)
5. «High Shift Effort»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column__high-shift-effort)
6. «Looseness in Steering Column»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column__looseness-in-steering-column)
7. «Heated Steering Wheel Indicator Malfunction»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column)
8. «Heated Steering Wheel Malfunction»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column)

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit/System Description

When the ignition is ON and the heated steering wheel switch is pressed, the switch circuit is pulled to ground. The heat module monitors the switch circuit, and turns the steering wheel heat system ON or OFF when the circuit is grounded. The heat module supplies voltage to the indicator lamp when the system is on.

Schematic Reference

1. «Steering Wheel Schematics»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column)
2. «Cruise Control Schematics»(/cadillac/escalade/gmt900-2006-2014/remont/cruise-control-systems/#cruise-control-system)

Connector End View Reference

Component Connector End Views

Description and Operation

Steering Wheel and Column Description and Operation

Electrical Information Reference

1. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
2. «Circuit Testing»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)

Ignition ON, press and release the heated steering wheel switch. The heated steering wheel indicator should illuminate and the both sides of the steering wheel should become warm.

1. Ignition OFF, disconnect the harness connector at the heated steering wheel control module.
2. Test for less than 10.0 ohms between the ground circuit terminal B X277 and ground. If greater than the specified value, test the ground circuit for an open/high resistance.
3. Ignition ON, verify a test lamp illuminates between the ignition voltage circuit terminal A X277 and ground. If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
4. Install a 3A fused jumper wire between the indicator control circuit terminal 4 and B+. Verify the heated steering wheel indicator is illuminated. If the indicator does not illuminate, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the left steering wheel control switch.
5. Verify that a test lamp does not illuminate between the indicator control circuit terminal 4 and ground. If the test lamp is always ON, test the indicator control circuit for a short to voltage. If the circuit tests normal, replace the heated steering wheel control module.
6. If all circuits test normal, replace the steering wheel heat control module.

Heated Steering Wheel Control Switch

1. Place the heated steering wheel control switch in the OFF position.
2. Test for infinite resistance between terminal 2 and terminal 8. If less than the specified value, replace the switch.
3. Place the heated steering wheel control switch in the ON position.
4. Test for less than 2 ohms between terminal 2 and terminal 8. If greater than the specified value, replace the switch.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Steering Wheel Control Switch Assembly Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/memory-modules/#configurable-customer-control-system)
2. «Steering Wheel Heat Control Module Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column)
3. «Control Module References»(/cadillac/escalade/gmt900-2006-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for heated steering wheel control module replacement, programming, and setup

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The heated steering wheel control module controls the heated strewing wheel and the heated steering wheel on indicator based on an input from the heated steering wheel switch. When the heated steering wheel switch is pressed, the switch signal circuit is pulled to ground. This indicates to the heating steering wheel control module that steering wheel heat is requested. When the request is seen, the heat steering module supplies voltage to the indicator lamp and supplies voltage to the heating elements, which are internal to the module.

Schematic Reference

Steering Wheel Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Steering Wheel and Column Description and Operation

Electrical Information Reference

1. «Circuit Testing»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Waterleak Test Preparation»(/cadillac/escalade/gmt900-2006-2014/remont/exterior-body-panels/#waterleaks__waterleak-test-preparation)

Ignition ON, press and release the heated steering wheel switch. The heated steering wheel indicator should illuminate and both sides of the steering wheel should become warm.

1. Ignition OFF, disconnect the harness connector at the heated steering wheel control module.
2. Test for less than 10.0 ohms between the ground terminal B X277 and ground. If greater than the specified value, test the ground circuit for an open/high resistance.
3. Ignition ON, verify a test lamp illuminates between the B+ terminal A X277 and ground. If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
4. Ignition OFF, connect a test lamp between the signal circuit terminal 2 and B+. Place the heated steering wheel switch in the OFF position. If the test lamp illuminates, test the signal circuit for a short to ground, If all circuits test normal, test or replace the heated steering wheel control switch.
5. Connect a test lamp between the signal circuit terminal 2 and B+. Place the heated steering wheel switch in the ON position. If the test lamp does not illuminate, test the signal circuit for a short to voltage or open/high resistance and test the ground circuit for an open/high resistance. If all circuits test normal, test or replace the heated steering wheel control switch.
6. Verify that a test lamp does not illuminate between the control circuit terminal B and ground. If the test lamp illuminates, test for a short to voltage on the heated steering wheel element control circuit.
7. Test for 1.5-3.0 ohms between the control circuit terminal B and the ground terminal A. If not within the specified range, test the heating element control circuit for a short to ground or open/high resistance and the ground circuit for an open/high resistance. If all circuits test normal, replace the heated steering wheel.
8. Verify that a test lamp does not illuminate between the signal circuit terminal C and ground. If the test lamp illuminates, test for a short to voltage on the heated steering wheel element signal circuit.
9. Test for 6000-35000 ohms between the signal circuit terminal C and the 5 volt reference terminal D. If not within the specified range, replace the heated steering wheel.
10. If all circuits test normal, replace the heated steering wheel control module.

Heated Steering Wheel Control Switch

1. Place the heated steering wheel control switch in the OFF position.
2. Test for infinite resistance between terminal 2 and terminal 8. If less than the specified value, replace the switch.
3. Place the heated steering wheel control switch in the ON position.
4. Test for less than 2 ohms between terminal 2 and terminal 8. If greater than the specified value, replace the switch.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Steering Wheel Control Switch Assembly Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/memory-modules/#configurable-customer-control-system)
2. «Steering Wheel Heat Control Module Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column)
3. «Control Module References»(/cadillac/escalade/gmt900-2006-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for heated steering wheel control module replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The memory seat module (MSM) receives voltage inputs from the tilt switch based on the position of the switch. The MSM then supplies battery voltage and a ground to the tilt motor control circuits depending on which direction of movement is requested.

Schematic Reference

Steering Wheel Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Steering Wheel and Column Description and Operation

Electrical Information Reference

1. «Circuit Testing»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

1. Ignition ON, observe the scan tool Tilt Up Switch and the Tilt Down Switch parameters while cycling the tilt switch between the TILT UP and TILT DOWN positions. The reading should be Inactive and change to Active when pushing the appropriate switch. If any of the parameters do not cycle between the specified values, refer to Tilt Switch Circuit Malfunction.
2. Command the column to tilt up and down using the tilt switch. The column should move in the commanded direction. If the column does not operate as specified, refer to Tilt Actuator Circuit Malfunction.

Tilt Switch Circuit Malfunction

1. Ignition OFF, disconnect the harness connector at the tilt switch.
2. Ignition ON, verify a test lamp illuminates between the B+ circuit terminal B and ground. If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
3. Verify both scan tool tilt switch parameters are Inactive. Tilt Up Switch - control circuit terminal C Tilt Down Switch - control circuit terminal A If any of the parameters are not the specified value, test the appropriate control circuit terminal for a short to voltage. If the circuit tests normal, replace the MSM.
4. Install a 3A fused jumper wire between the B+ circuit terminal B and the control circuit terminals listed below. Verify both scan tool tilt switch parameters are Active. Tilt Up Switch - terminal C Tilt Down Switch - terminal A If not the specified value, test the appropriate control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the MSM.
5. If all circuit test normal, test or replace the tilt switch.

Tilt Actuator Circuit Malfunction

1. Ignition OFF, disconnect the harness connector at the tilt actuator.
2. Install a test lamp between the control circuit terminal A and the control circuit terminal B.
3. Command the column to tilt up and down using the tilt switch. The test lamp should illuminate with each command. If the test lamp does not illuminate, test both control circuits for a short to ground or an open/high resistance. If the circuits test normal, replace the MSM.
4. If all circuits test normal, test or replace the tilt actuator.

Tilt Switch

1. Ignition OFF, disconnect the harness connector at the tilt switch.
2. Test for infinite resistance between the B+ terminal B and the control terminals listed below with the switch in the neutral position: Terminal A Terminal C If less than the specified range, replace the tilt switch.
3. Test for less than 1 ohm between the B+ terminal B and the control terminal C with the switch in the TILT UP position. If greater than the specified range, replace the tilt switch.
4. Test for less than 1 ohm between the B+ terminal B and the control terminal A with the switch in the TILT DOWN position. If greater than the specified range, replace the tilt switch.

Tilt Actuator

1. Ignition OFF, disconnect the harness connector at the tilt actuator.
2. Test for less than 2.0 ohms between the control terminal A and the control terminal B. If greater than the specified range, replace the tilt actuator.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Steering Column Tilt Wheel Switch Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column)
2. «Tilt Motor Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column)
3. «Control Module References»(/cadillac/escalade/gmt900-2006-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for MSM replacement, setup, and programming

Steering Column Tilt Function Inoperative

Noise in Steering Column

High Shift Effort

Looseness in Steering Column

Special Tools

J 42640: Steering Column Anti-Rotation Pin

For equivalent regional tools, refer to Special Tools .

Removal Procedure

1. Set the front wheels in the straight-ahead position.
2. Install the J 42640: anti-rotation pin in the steering column lower access hole.
3. Remove the engine shield. Refer to «Engine Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
4. Mark the relationships of the steering shaft coupling, the upper intermediate steering shaft, and the power steering gear. Mark the relationship of the upper intermediate steering shaft to the steering shaft coupling. Mark the relationship of the steering shaft coupling to the steering gear.
5. Remove the steering shaft coupling bolt at the steering gear.
6. Remove the steering shaft coupling nut (1) and bolt (2) at the upper intermediate steering shaft.
7. Remove the steering shaft coupling from the vehicle.

Installation Procedure

1. Install the steering shaft coupling to the vehicle.
2. Install the steering shaft coupling nut (1) and bolt (2) at the upper intermediate steering shaft and tighten to 50 N.m (37 lb ft).
3. Install the steering shaft coupling bolt at the steering gear and tighten to 47 N.m (35 lb ft).
4. Install the engine shield. Refer to «Engine Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
5. Remove the J 42640: anti-rotation pin from the steering column lower access hole.

J-42640: Steering Column Anti-rotation Pin

For equivalent regional tools, refer to Special Tools .

1. Install the J-42640: pin to the steering column lower access hole.
2. Use paint in order to place match marks on the upper intermediate steering shaft and on the steering column shaft.
3. Use paint in order to place match marks on the upper intermediate steering shaft and on the steering shaft coupling.
4. Remove the steering shaft coupling nut (1) and the bolt (2). Disconnect the upper intermediate steering shaft from the steering shaft coupling.
5. Remove the steering column seal. Refer to «Steering Column Seal Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
6. Remove the steering shaft coupling nut (1) and the bolt (2). Disconnect the upper intermediate steering shaft from the steering column.
7. Remove the upper intermediate steering shaft from inside the engine compartment.

1. If you are installing a new upper intermediate steering shaft, copy the match marks from the old component to the new component.
2. Working inside the engine compartment, position the upper intermediate steering shaft in the vehicle.
3. Align the match marks and connect the upper intermediate steering shaft to the steering column. Install the steering shaft coupling nut (1) and the bolt (2) to the steering column. Tighten the nut to 62 N.m (46 lb ft).
4. Install the steering column seal. Refer to «Steering Column Seal Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
5. Align the match marks and connect the upper intermediate steering shaft to the steering shaft coupling. Install the steering shaft coupling nut (1) and the bolt (2) to the steering shaft coupling. Tighten the bolt to 50 N.m (37 lb ft).
6. Remove the J-42640: pin from the steering column lower access hole.

Steering Column Accident Damage Inspection

1. Vehicles involved in accidents which result in the following conditions may also have a damaged or misaligned steering column: Frame damage Major body or sheet metal damage Where the steering column has been impacted Where supplemental inflatable restraint systems deployed
2. Inspect the capsules on the steering column bracket assembly. All capsules must be securely seated in the bracket slots and checked for any loose conditions when pushed or pulled by hand. If not, the bracket should be replaced if bolted to the jacket assembly. If the bracket is welded to the jacket assembly replace the jacket assembly.
3. Inspect for jacket assembly collapse by measuring the distance from the steering column support bracket mounting plate (1) to the lower edge of the jacket lower bracket (2). Replace the jacket assembly if the measured dimensions are less than 286 mm.
4. Remove the SIR coil from the steering column and allow the coil to hang freely before the shaft is rotated. Refer to «Steering Wheel Inflatable Restraint Module Coil Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/airbag/#supplemental-inflatable-restraint-system) .
5. Visually inspect the steering shaft for sheared injected plastic (1). If the steering shaft shows sheared plastic, replace the steering shaft.
6. Inspect the steering shaft runout for any frame damage that could cause a bent steering shaft. Using a dial indicator at the lower end of the steering shaft, rotate the steering wheel. The runout must not exceed 1.60 mm (0.0625 in).

Scheme 5

Scheme 6

Tilt Soft Stops

After replacement of the memory seat module (MSM), tilt motor, or steering column, it is necessary to program the tilt soft stops. Each soft stop is a programmable end of travel that is set approximately 1.3 cm (0.5 in) from the mechanical end of travel. The steering column has a soft stop set at each end of the tilt up/down movement. The system uses soft stops to prevent wear on the system by ensuring that the steering column movement stops before it reaches its mechanical end of travel in any direction. The soft stops are initially programmed at the factory.

Tilt Soft Stop Programming Procedure

1. Ignition ON, Engine OFF.
2. Connect a scan tool to the vehicle.
3. Select Memory Seat Module.
4. Select Special Functions.
5. Select Driver Seat.
6. Select Learn Column Soft Stops.
7. Follow the scan tool on-screen instructions.

Scheme 7

1. Remove the steering column shroud. Refer to «Steering Column Shroud Replacement (Without Electronic Tilt Steering)»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) or «Steering Column Shroud Replacement (With Electronic Tilt Steering)»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
2. Roll back the shift lever seal on the shift lever until the shift lever bolt is exposed.
3. Disconnect any electrical connectors as needed.
4. Remove the shift lever bolt (2).
5. Remove the shift lever (1).

1. Install the shift lever (1).
2. Install the shift lever bolt (2) and tighten to 20 N.m (15 lb ft).
3. Connect all electrical connectors.
4. Position the shift lever seal.
5. Install the steering column shroud. Refer to «Steering Column Shroud Replacement (Without Electronic Tilt Steering)»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) or «Steering Column Shroud Replacement (With Electronic Tilt Steering)»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .

1. Remove the steering column. Refer to «Steering Column Replacement (Without HP2)»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) or «Steering Column Replacement (HP2)»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) or «Steering Column Replacement (Without HP2 With Electric Tilt Column)»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
2. Remove the shift lever. Refer to «Shift Lever Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
3. Disconnect the automatic transmission park lock cable (1).
4. Disconnect the automatic transmission shift lock control actuator (1) from the automatic transmission control.
5. Remove the automatic transmission control bolts (1).
6. Remove the automatic transmission control (2).

1. Install the automatic transmission control (2).
2. Install the automatic transmission control bolts (1) and tighten to 10 N.m (89 lb in).
3. Connect the automatic transmission shift lock control actuator (1) to the automatic transmission control.
4. Connect the automatic transmission park lock cable (1). Place the ignition lock cylinder into the OFF position. Place the automatic transmission control into the PARK position. Press the locking tab on the end of the automatic transmission park lock cable into the slot in the ignition lock cylinder case.
5. Install the shift lever. Refer to «Shift Lever Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
6. Install the steering column. Refer to «Steering Column Replacement (Without HP2)»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) or «Steering Column Replacement (HP2)»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) or «Steering Column Replacement (Without HP2 With Electric Tilt Column)»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .

Scheme 8

Scheme 9

Scheme 10

Scheme 11

Repair Procedure

1. Remove the steering wheel. Refer to «Steering Wheel Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
2. Wash the wood section of the wheel with wax and grease remover.
3. Mask off the non-wood area of the steering wheel.
4. Sand with 400 grit sand paper first. Finish sanding with 600 grit.
5. Wash the wood section of the wheel again with wax and grease remover.
6. Clear coat the steering wheel using the appropriate information in the body repair section.
7. Install the steering wheel. Refer to «Steering Wheel Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .

Scheme 12

1. Remove the knee bolster. Refer to «Knee Bolster Replacement (Cadillac)»(/cadillac/escalade/gmt900-2006-2014/remont/exteriorinterior-trim/#instrument-panel-trim-and-console-trim) or «Knee Bolster Replacement (Except Cadillac)»(/cadillac/escalade/gmt900-2006-2014/remont/exteriorinterior-trim/#instrument-panel-trim-and-console-trim) .
2. Remove the steering column shroud. Refer to «Steering Column Shroud Replacement (Without Electronic Tilt Steering)»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) or «Steering Column Shroud Replacement (With Electronic Tilt Steering)»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
3. Put the steering column in the uppermost tilted position.
4. Remove the tilt spring (1) from the steering column (2) using the following procedure: Pry up the tilt spring (1) until a bulge occurs and most of the tension is removed. Secure the tilt spring (1) with locking pliers. Continue prying the tilt spring (1) until the tilt spring disengages from the posts on the steering column (2) and from the steering column tilt head (3).
5. Remove the spring guide (1) from the tilt spring (2).

1. Put the steering column in the uppermost tilted position.
2. Install the spring guide (1) to the tilt spring (2).
3. Install the tilt spring (1) onto the steering column (2) using the following procedure: Install the tilt spring (1) onto the post on the steering column tilt head (3). Install the tilt spring (1) onto the post on the steering column (2). Remove the locking pliers.
4. Install the steering column shroud. Refer to «Steering Column Shroud Replacement (Without Electronic Tilt Steering)»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) or «Steering Column Shroud Replacement (With Electronic Tilt Steering)»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
5. Install the knee bolster. Refer to «Knee Bolster Replacement (Cadillac)»(/cadillac/escalade/gmt900-2006-2014/remont/exteriorinterior-trim/#instrument-panel-trim-and-console-trim) or «Knee Bolster Replacement (Except Cadillac)»(/cadillac/escalade/gmt900-2006-2014/remont/exteriorinterior-trim/#instrument-panel-trim-and-console-trim) .

Turn Signal Switch Cancel Cam Position Plate Replacement

Tools Required

1. J 23653-SIR Steering Column Lock Plate Compressor
2. J 42137 Cam Orientation Plate Adapter. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .

1. Remove the inflatable restraint steering wheel module coil and the inflatable restraint steering wheel module coil wave washer. Refer to «Steering Wheel Inflatable Restraint Module Coil Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/airbag/#supplemental-inflatable-restraint-system) .
2. Remove the following parts from the steering shaft: Steering shaft lock plate retaining ring (1) using compressor J 23653-SIR and adapter J 42137 . See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) . Turn signal switch cancel cam position plate (2) Turn signal switch cancel cam (3)

1. Install the following parts onto the steering shaft: Lubricate the turn signal switch cancel cam (3) with GM P/N 12377900 (Canadian P/N 10953529). Turn signal switch cancel cam position plate (2) Steering shaft lock plate retaining ring (1) using compressor J 23653-SIR and adapter J 42137 . See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
2. Install the inflatable restraint steering wheel module coil and the inflatable restraint steering wheel module coil wave washer. Refer to «Steering Wheel Inflatable Restraint Module Coil Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/airbag/#supplemental-inflatable-restraint-system) .

Steering Shaft Upper Bearing Replacement

Special Tools

1. J 21854-01 Pivot Pin Remover. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
2. J 23653-SIR Steering Column Lock Plate Compressor. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
3. J 42137 Cam Orientation Plate Adapter. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
4. J 42640 Steering Column Anti-Rotation Pin

1. Remove the steering column. Refer to «Steering Column Replacement (Without HP2)»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) or «Steering Column Replacement (HP2)»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) or «Steering Column Replacement (Without HP2 With Electric Tilt Column)»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
2. Remove the inflatable restraint steering wheel module coil. Refer to «Steering Wheel Inflatable Restraint Module Coil Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/airbag/#supplemental-inflatable-restraint-system) .
3. Remove the turn signal multifunction switch. Refer to «Turn Signal Multifunction Switch Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
4. Remove the ignition lock cylinder case. Refer to «Ignition Lock Cylinder Case Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-repair-instructions) .
5. Remove the tilt spring. Refer to «Steering Column Tilt Spring Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
6. Remove the automatic transmission control. Refer to «Transmission Control Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
7. Using compressor J 23653-SIR and adapter J 42137 , remove and discard the steering shaft lock plate retaining ring. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
8. Remove the following parts from the steering column shaft assembly: The turn signal switch cancel cam position plate (5) The turn signal switch cancel cam (4) The steering shaft upper bearing spring (3) The steering shaft upper bearing inner race seat (2) The steering shaft upper bearing inner race (1)
9. Remove the 2 pivot pins (3) from the steering column tilt head assembly (1) by using remover J 21854-01 (2). See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
10. Install the tilt lever into the steering column tilt head assembly (1).
11. Pull back on the tilt lever and at the same time, pull the steering column tilt head assembly (1) down and away from the steering column.
12. Remove the steering column tilt head assembly.
13. Remove anti-rotation pin J 42640 .
14. Remove the tilt lever.
15. Remove the steering shaft upper bearing from the steering column tilt head assembly.

1. Install the steering shaft upper bearing to the steering column tilt head assembly.
2. Install the steering column shaft assembly.
3. Maneuver and push the steering column tilt head assembly (1) towards the steering column in order to lock the steering wheel lock shoes in place.
4. Lubricate the pivot pins (1) with GM P/N 12346293 (Canadian P/N 992723).
5. Firmly seat each pivot pin (1) into the steering column tilt head assembly.
6. Stake the steering column in 3 locations around each pivot pin.
7. Install anti-rotation pin J 42640 .
8. Install the following parts onto the steering column shaft assembly: Lubricate the steering shaft upper bearing inner race (1) with GM P/N 12345718 (Canadian P/N 10953516). The steering shaft upper bearing inner race (1) The steering shaft upper bearing inner race seat (2) The steering shaft upper bearing spring (3) Lubricate the turn signal switch cancel cam (4) with GM P/N 12377900 (Canadian P/N 10953529). The turn signal switch cancel cam (4) The turn signal switch cancel cam position plate (5)
9. Install the new steering shaft lock plate retaining ring onto the steering shaft using compressor J 23653-SIR and adapter J 42137 . See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
10. Install the automatic transmission control assembly. Refer to «Transmission Control Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
11. Install the tilt spring. Refer to «Steering Column Tilt Spring Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
12. Install the ignition lock cylinder case. Refer to «Ignition Lock Cylinder Case Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-repair-instructions) .
13. Install the turn signal multifunction switch. Refer to «Turn Signal Multifunction Switch Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
14. Install the inflatable restraint steering wheel module coil. Refer to «Steering Wheel Inflatable Restraint Module Coil Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/airbag/#supplemental-inflatable-restraint-system) .
15. Install the steering column. Refer to «Steering Column Replacement (Without HP2)»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) or «Steering Column Replacement (HP2)»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) or «Steering Column Replacement (Without HP2 With Electric Tilt Column)»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .

J 42640 Steering Column Anti-Rotation Pin

1. Disable the supplemental inflatable restraint (SIR) system. Refer to «SIR Disabling and Enabling»(/cadillac/escalade/gmt900-2006-2014/remont/airbag/#supplemental-inflatable-restraint-system__sir-disabling-and-enabling) .
2. Lock the steering column through the access hole in the steering column shroud using anti-rotation pin J 42640 .
3. Remove the instrument panel driver knee bolster deflector. Refer to «Instrument Panel Driver Knee Bolster Deflector Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/exteriorinterior-trim/#instrument-panel-trim-and-console-trim) .
4. Disconnect the automatic transmission shift lock actuator. Refer to «Automatic Transmission Shift Lock Control Actuator Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/automatic-trans/#shift-interlock-system) .
5. Disconnect the upper intermediate steering shaft from the steering column. Refer to «Upper Intermediate Steering Shaft Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
6. Disconnect the steering column electrical connectors as needed.
7. Remove the 4 steering column nuts (1) from the steering column brackets.
8. Remove the steering column and the 2 washers from the vehicle.
9. If replacing the steering column transfer all components as needed.

1. Install the steering column and 2 washers to the vehicle.
2. Install the 4 steering column nuts (1) using the procedure shown above and tighten to 27 N.m (20 lb ft).
3. Connect the automatic transmission shift lock actuator. Refer to «Automatic Transmission Shift Lock Control Actuator Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/automatic-trans/#shift-interlock-system) .
4. Install the instrument panel driver knee bolster deflector. Refer to «Instrument Panel Driver Knee Bolster Deflector Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/exteriorinterior-trim/#instrument-panel-trim-and-console-trim) .
5. Connect the upper intermediate steering shaft to the steering column. Refer to «Upper Intermediate Steering Shaft Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
6. Connect the steering column electrical connectors.
7. Remove anti-rotation pin J 42640 from the steering column.
8. Enable the SIR system. Refer to «SIR Disabling and Enabling»(/cadillac/escalade/gmt900-2006-2014/remont/airbag/#supplemental-inflatable-restraint-system__sir-disabling-and-enabling) .

J 42640 Steering Column Anti-Rotation Pin

1. Disable the supplemental inflatable restraint (SIR) system. Refer to «SIR Disabling and Enabling»(/cadillac/escalade/gmt900-2006-2014/remont/airbag/#supplemental-inflatable-restraint-system__sir-disabling-and-enabling) .
2. Lock the steering column through the access hole in the steering column shroud using anti-rotation pin J 42640 .
3. Remove the instrument panel driver knee bolster deflector. Refer to «Instrument Panel Driver Knee Bolster Deflector Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/exteriorinterior-trim/#instrument-panel-trim-and-console-trim) .
4. Disconnect the automatic transmission shift lock actuator. Refer to «Automatic Transmission Shift Lock Control Actuator Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/automatic-trans/#shift-interlock-system) .
5. Disconnect the upper intermediate steering shaft from the steering column. Refer to «Upper Intermediate Steering Shaft Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
6. Disconnect the steering column electrical connectors as needed.
7. Remove the 2 steering column bolts (1) and 2 steering column nuts (2) from the steering column brackets.
8. Remove the steering column and the 2 washers from the vehicle.
9. If replacing the steering column transfer all components as needed.

1. Install the steering column and 2 washers to the vehicle.
2. Install the 2 steering column bolts (1) and 2 steering column nuts (1) using the procedure shown above and tighten to 27 N.m (20 lb ft).
3. Connect the automatic transmission shift lock actuator. Refer to «Automatic Transmission Shift Lock Control Actuator Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/automatic-trans/#shift-interlock-system) .
4. Install the instrument panel driver knee bolster deflector. Refer to «Instrument Panel Driver Knee Bolster Deflector Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/exteriorinterior-trim/#instrument-panel-trim-and-console-trim) .
5. Connect the upper intermediate steering shaft to the steering column. Refer to «Upper Intermediate Steering Shaft Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
6. Connect the steering column electrical connectors.
7. Enable the SIR system. Refer to «SIR Disabling and Enabling»(/cadillac/escalade/gmt900-2006-2014/remont/airbag/#supplemental-inflatable-restraint-system__sir-disabling-and-enabling) .
8. Remove anti-rotation pin J 42640 from the steering column.
9. If replacing the steering column, the power tilt steering column calibration must be performed. Refer to «Power Tilt Steering Column Calibration»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .

J 42640 Steering Column Anti-Rotation Pin

1. Disable the supplemental inflatable restraint (SIR) system. Refer to «SIR Disabling and Enabling»(/cadillac/escalade/gmt900-2006-2014/remont/airbag/#supplemental-inflatable-restraint-system__sir-disabling-and-enabling) .
2. Lock the steering column through the access hole in the steering column shroud using anti-rotation pin J 42640 .
3. Remove the instrument panel driver knee bolster deflector. Refer to «Instrument Panel Driver Knee Bolster Deflector Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/exteriorinterior-trim/#instrument-panel-trim-and-console-trim) .
4. Disconnect the automatic transmission shift lock actuator. Refer to «Automatic Transmission Shift Lock Control Actuator Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/automatic-trans/#shift-interlock-system) .
5. Disconnect the upper intermediate steering shaft from the steering column. Refer to «Upper Intermediate Steering Shaft Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
6. Disconnect the steering column electrical connectors as needed.
7. Remove the 4 steering column nuts (1) from the steering column brackets.
8. Remove the steering column and the 2 washers from the vehicle.
9. If replacing the steering column transfer all components as needed.

1. Install the steering column and 2 washers to the vehicle.
2. Install the 4 steering column nuts (1) using the procedure shown above and tighten to 27 N.m (20 lb ft).
3. Connect the automatic transmission shift lock actuator. Refer to «Automatic Transmission Shift Lock Control Actuator Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/automatic-trans/#shift-interlock-system) .
4. Install the instrument panel driver knee bolster deflector. Refer to «Instrument Panel Driver Knee Bolster Deflector Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/exteriorinterior-trim/#instrument-panel-trim-and-console-trim) .
5. Connect the upper intermediate steering shaft to the steering column. Refer to «Upper Intermediate Steering Shaft Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
6. Connect the steering column electrical connectors.
7. Enable the SIR system. Refer to «SIR Disabling and Enabling»(/cadillac/escalade/gmt900-2006-2014/remont/airbag/#supplemental-inflatable-restraint-system__sir-disabling-and-enabling) .
8. Remove anti-rotation pin J 42640 from the steering column.
9. Calibrate the power tilt steering column. Refer to «Power Tilt Steering Column Calibration»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .

1. Disconnect the steering shaft coupling from the upper intermediate steering shaft. Refer to «Steering Shaft Coupling Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
2. Remove the 3 steering column seal nuts (2).
3. Remove the steering column seal (1) from the vehicle.

1. Install the steering column seal (1) to the vehicle.
2. Install the 3 steering column seal nuts (2) and tighten to 3 N.m (27 lb in).
3. Connect the steering shaft coupling to the upper intermediate steering shaft. Refer to «Steering Shaft Coupling Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .

Scheme 13

Scheme 14

1. With the wheels of the vehicle in the straight ahead position, secure the steering wheel or the steering column with a steering column anti-rotation pin, a steering column lock, or a strap, as applicable, in order to prevent rotation.
2. Verify the type of steering wheel position sensor.
3. From the technicians point of view of the FRONT of the sensor (1), the connector will be on the right.
4. Remove the connector from the sensor.
5. Remove the sensor from the adapter and bearing assembly.
6. To install the sensor, proceed to step 1 in the installation procedure.
7. From the technicians point of view, the FRONT of the sensor will have: A foam ring (2) A pin hole (1) for the centering the pin-Note the location of the pin hole. A flush rotor flange cuff (4)
8. Make an alignment mark on the flush rotor flange cuff.
9. Remove the connector from the sensor.
10. Remove the sensor from the adapter and bearing assembly.
11. To install the sensor, proceed to step 4 in the installation procedure.
12. From the technicians point of view, the FRONT of the sensor will have: A raised rotor flange cuff (3) An alignment mark (2) on the rotor flange cuff for installation A pin hole (1) for the centering pin-Note the location of the pin hole.
13. Remove the connector from the sensor.
14. Remove the sensor from the adapter and bearing assembly.
15. To install the sensor, proceed to step 8 in the installation procedure.
16. From the technicians point of view, the FRONT of the sensor will have: A raised rotor flange cuff (3) An alignment mark (2) on the rotor flange cuff for installation A pin hole (1) for the centering pin-Note location of the pin hole. A sensor clip in FRONT of the sensor
17. Remove the connector from the sensor.
18. Remove the sensor clip from the sensor.
19. Remove the sensor from the adapter and bearing assembly.
20. To install the sensor, proceed to step 12 in the installation procedure.
21. From the technicians point of view, the FRONT of the sensor will have: A flush rotor flange cuff (3) A pin hole (1) for the centering pin-Note the location of the pin hole. An alignment mark (2) on the flush rotor flange cuff for installation
22. Remove the connector from the sensor.
23. Remove the sensor from the adapter and bearing assembly.
24. To install the sensor, proceed to step 16 in the installation procedure.
25. From the technicians point of view, the FRONT of the sensor will have: A flush rotor flange cuff (4) A pin hole (2) for the centering pin-Note the location of the pin hole. An alignment mark (3) on the flush rotor flange cuff for installation A foam ring (1)
26. Remove the connector from the sensor.
27. Remove the sensor from the adapter and bearing assembly.
28. To install the sensor, proceed to step 20 in the installation procedure.

1. From the technicians point of view of the FRONT of the sensor (1), the connector will be on your right. From the technicians point of view of the BACK of the sensor (2), the connector will be on your left.
2. Looking at the FRONT of the sensor, align the sensor with the steering shaft and install the sensor to the adapter and bearing assembly.
3. Install the connector to the sensor.
4. From the technicians point of view, the FRONT of the sensor will have: A foam ring (4) A pin hole (7) for the centering pin-Note the location of the pin hole. A flush rotor flange cuff (6) An alignment mark (5) for installation
5. From the technicians point of view, the BACK of the sensor will have: Double D flats (1) A foam ring (3) An alignment tab (2) for installing the sensor to the adapter and bearing assembly A view of the inside of the connector
6. Looking at the FRONT of the sensor, align the sensor with the steering shaft and install the sensor to the adapter and bearing assembly.
7. Install the connector to the sensor.
8. From the technicians point of view, the FRONT of the sensor will have: A pin hole (3) for the centering pin-Note location of the pin hole. A raised rotor flange cuff (5) An alignment mark (4) for installation
9. From the technicians point of view, the BACK of the sensor will have: Double D flats (1) An alignment tab (2) for installing the sensor to the adapter and bearing assembly
10. Looking at the FRONT of the sensor, align the sensor with the steering shaft and install the sensor to the adapter and bearing assembly.
11. Install the connector to the sensor.
12. From the technicians point of view, the FRONT of the sensor will have: A pin hole (2) for the centering pin-Note the location of the pin hole. A raised rotor flange cuff (4) An alignment mark (3) for installation
13. From the technicians point of view, the BACK of the sensor will have an alignment tab (1) for installation. This sensor does not have double D flats.
14. Looking at the FRONT of the sensor, align the sensor with the steering shaft and install the sensor to the adapter and bearing assembly.
15. Install the connector to the sensor.
16. From the technicians point of view, the FRONT of the sensor will have: A pin hole (2) for the centering pin-Note the location of the pin hole. A flush rotor flange cuff (4) An alignment mark (3) for installation
17. From the technicians point of view, the BACK of the sensor will have an alignment tab (1) for installation. This sensor does not have double D flats.
18. Looking at the FRONT of the sensor, align the sensor with the steering shaft and install the sensor to the adapter and bearing assembly.
19. Install the connector to the sensor.
20. From the technicians point of view, the FRONT of the sensor will have: A pin hole (3) for the centering pin-Note location of the pin hole. A flush rotor flange cuff (5) An alignment mark (4) for installation A foam ring (6)
21. From the technicians point of view, the BACK of the sensor will have: Double D flats (1) An alignment tab (2) for installing the sensor to the adapter and bearing assembly
22. Looking at the FRONT of the sensor, align the sensor with the steering shaft and install the sensor to the adapter and bearing assembly.
23. Install the connector to the sensor.

Scheme 15

Tilt Switch Operation

The tilt steering column has a two-position switch which may be used to adjust the position of the steering wheel up or down which is tilt. The position of the column may be changed as follows

1. Press the switch up to tilt the column up.
2. Press the switch down to tilt the column down.

The memory seat module (MSM) receives inputs from the tilt switch to manually move the column to a desired position. Pressing the control switch sends an input to the MSM. The MSM receives an input and actuates the corresponding column motor.

Pressing the switch momentarily in either the UP or DOWN and releasing within 0.5 seconds, causes the column to advance slightly in the corresponding direction then stop. This feature allows fine control of the steering column position in each direction. If the switch is pressed and held for longer than 0.5 seconds, the column advances slightly in that direction, pauses, then resumes movement as long as the switch is held.

Motor

The tilt motor is reversible. For example, the tilt motor moves the column both up and down. When the MSM receives an input to move the column up, the MSM supplies battery positive voltage and ground to the tilt motor in order to move the column up. When the MSM receives a column down input, the MSM supplies battery positive voltage and ground to the same motor, but with a reverse polarity. When the voltage polarity is reversed, the motor runs in the opposite direction and moves the column down.

Position Sensor

The tilt position sensor is used by the MSM to store column positions in memory and to return the column to the stored memory positions. The MSM provides a 5-volt reference voltage and a ground to the tilt position sensor. The sensor feedback circuit voltage varies from 0.25-4.75 volts. Each sensor is mounted to its corresponding motor cable assembly. When the motor rotates its cable, the resistance of the sensor varies. The MSM monitors the feedback voltage to determine the column position via the tilt position sensor input circuits. When an entry or exit position is saved, the MSM stores the column positions by recording each position sensor's feedback voltage. When an entry or exit position is commanded, the module moves the motor until all the position sensor feedback voltages equal the feedback voltages stored in memory.

Tilt Memory

Memory settings and the personalization of steering wheel positions are available with the tilt steering column. The data stored consists of entry positions and exit positions. The entry position is the position that the steering column moves in when the ignition is turned ON. The exit position is the direction that the steering column moves up when the ignition is turned OFF and the driver's door is opened.

An initial memory setting is set in the MSM at the assembly plant. This setting may be changed to suit the customer at the time of purchase or at anytime in the future.

Entry/Exit Personalization

The MSM stores personalization information. The driver information center (DIC) is used to enable and disable the personalization feature in the MSM. A Class 2 message is sent to the MSM, by the DIC, which specifies that the MSM enable the personalization feature until disabled again using the DIC.

The steering column control module can store 6 possible positions: 3 entry positions and 3 exit positions.

1. Driver 1 exit position, set using the memory switches
2. Driver 2 exit position, set using the memory switches
3. Default exit position which is all forward, all up, with no memory position set
4. Driver 1 entry position, set using the memory switches
5. Driver 2 entry position, set using the memory switches
6. Last known driver entry position which is when the ignition is turned ON by an unknown driver

Memory Setting

When the driver door switch assembly (DDSA) receives inputs from the memory function switch, the steering column personalization positions may be recorded for one or two different drivers. Once a steering column driving entry or exit position is adjusted by the driver it must be set in memory. To record a position, the driver must press the SET MEMORY button, which is followed by a chime to acknowledge that input. Within 5 seconds, either the MEMORY 1 or MEMORY 2 button must be pressed. When the DDM receives these inputs, it sends a class 2 message to the MSM. The MSM records the feedback voltages from the column position sensors for that driver. A single chime is sounded to acknowledge that the position was recorded.

To record a second position, the second driver must press the SET MEMORY 2 button, after they have made the appropriate adjustments, and the process continued.

Memory Personalization Recall

When the driver presses the MEMORY 1 or MEMORY 2 button, the DDSA receives the input and a single chime is sounded. The DDSA sends a class 2 message to the MSM indicating which driver memory setting has been selected. The MSM applies both battery positive voltage and ground to the column motors until all the column position sensor feedback voltages equal the feedback voltages stored in memory for the appropriate driver.

When a keyless entry transmitter is used to unlock the vehicle doors, the remote function actuator (RFA) module communicates which driver key fob performed that command. The MSM receives the unlock command via a class 2 message from the RFA module.

Tilt Description

The energy absorbing and locking steering column includes three important features in addition to the steering function.

1. The steering column is energy absorbing and is designed to compress in a front-end collision which will lessen the chance of injury to the driver.
2. The steering column has a tilt control system that consists of an electronic control module capable of class 2 serial data communication, a steering column power assembly with a positioning motor and sensor, and a steering column control switch.
3. The multi-function lever provides for the control of the headlamp high beams, and the windshield washer and wiper.

Column Shift Assembly

If the vehicle is equipped with a column mounted gear shift, it has a linear shift assembly on the steering column. The linear shift assembly has a cable that runs from the linear shift assembly to the ignition lock cylinder case. The purpose of this cable is to prevent the ignition key from being turned to the OFF position when the transmission is in gear and the vehicle may still be moving. The linear shift assembly cable contains a pin that is spring loaded to mechanically prevent the ignition key cylinder from being turned to the lock position when the vehicle transmission is not in the PARK position. If vehicle power is lost, and/or the transmission is not in the PARK position the operator will not be able to turn the ignition key to the lock position and will not be able to remove the ignition key from the column.

Heated Steering Wheel

The heated steering wheel system consists of a heated steering wheel, a heated steering wheel switch, and a steering wheel heat module. The heated steering wheel includes non-serviceable heating elements and a temperature sensor. The heating elements and sensor are located in the left and right sides of the rim of the steering wheel. The heated steering wheel switch is located in the left steering wheel control switch assembly. The steering wheel heat module is located at the top of the steering wheel center hub. When the switch is pressed, the switch signal circuit is grounded and the heat module turns the heated steering wheel on. The system then remains on until the customer turns it off. The wheels normal operating temperature is 32°C (89.6°F). The wheel takes approximately 3 to 4 minutes to reach the normal operating temperature. The wheel will take longer to heat up if the vehicle temperature is below -21°C (-5.8°F). The built-in temperature sensor provides input to the controller to limit the temperature to the normal operating temperature. The wheel will not operate if the vehicle temperature is at or above 32°C (89.6°F).

Illustration Tool Number/ Description J 21854-01 Pivot Pin Remover J 23653-SIR Steering Column Lock Plate Compressor J 42137 Cam Orientation Plate Adapter J 42640 Steering Column Anti-Rotation Pin

Scheme 16

Scheme 17

Scheme 18

See also:
• Diagnostic System Check - Vehicle
• Strategy Based Diagnosis
• Diagnostic Procedure Instructions
• Component Connector End Views
• Circuit Testing
• Connector Repairs
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs
• Control Module References
• Diagnostic Repair Verification
• Ignition Key Cannot Be Removed from the Ignition Lock Cylinder
• Ignition Key Cannot Turn or Sticks in Any Position
• Cruise Control Schematics
• Steering Wheel Control Switch Assembly Replacement
• Waterleak Test Preparation
• Steering Wheel Inflatable Restraint Module Coil Replacement
• SIR Warning
• Engine Shield Replacement
• Fastener Caution
• Steering Wheel Horn Switch Replacement
• Knee Bolster Replacement (Cadillac)
• Ignition Lock Cylinder Case Replacement
• SIR Disabling and Enabling
• Automatic Transmission Shift Lock Control Actuator Replacement
• DTC B2850, B2855, B2870, or B2875
• Steering Column Tilt Function Inoperative
• Noise in Steering Column
• High Shift Effort
• Looseness in Steering Column
• Symptoms - Steering Wheel and Column
• Fastener Tightening Specifications