Object Detection System: Other Chevrolet Silverado 3500 HD

Circuit/System Verification

1. Verify that DTC B1E3A is not set. If DTC is set, refer to «DTC B1E3A»(ref-317132-S30745653142009060900000) .
2. Park brake OFF, transmission in REVERSE, individually place a suitable object behind each sensor. Verify the appropriate scan tool Rear Region parameter is between Zone 1 and Zone 4.

Repair Procedures

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Rear Object Sensor Replacement»(ref-317132-S24017180002009060900000)
2. «Control Module References»(ref-317173-S10180079792009060900000) for object alarm module replacement, setup, and programming

Conditions for Clearing

1. The DTC will transition to history when the fault is no longer present.
2. A history DTC will clear after 100 malfunction-free ignition cycles.

Reference Information

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UVC) or Object Detection Description and Operation (UD7)

Electrical Information Reference

1. «Circuit Testing»(ref-317172-S12100958872009060900000)
2. «Connector Repairs»(ref-317172-S41839496312009060900000)
3. «Testing for Intermittent Conditions and Poor Connections»(ref-317172-S08096213032009060900000)
4. «Wiring Repairs»(ref-317172-S40815672902009060900000)

Scan Tool Reference

Control Module References for scan tool information

Ignition ON, observe the scan tool Park Assist Switch parameter while cycling the parking assist disable switch. The parameter should change between Active and Inactive.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Accessory Switch Replacement (with RPO SLT)»(ref-317147-S31969040112009060900000) or «Accessory Switch Replacement (without RPO SLT)»(ref-317147-S42041820052009060900000)
2. «Control Module References»(ref-317173-S10180079792009060900000) for object alarm module replacement, setup, and programming.

1. The DTC will transition to history when the fault is no longer present.
2. A history DTC will clear after 100 malfunction-free ignition cycles.

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UVC) or Object Detection Description and Operation (UD7)

Electrical Information Reference

1. «Circuit Testing»(ref-317172-S12100958872009060900000)
2. «Connector Repairs»(ref-317172-S41839496312009060900000)
3. «Testing for Intermittent Conditions and Poor Connections»(ref-317172-S08096213032009060900000)
4. «Wiring Repairs»(ref-317172-S40815672902009060900000)

Scan Tool Reference

Control Module References for scan tool information

Ignition ON, command the Rear Red LED, Rear Yellow LED 1, and Rear Yellow LED 2 ON and OFF with a scan tool. The appropriate indicator should turn on and off as commanded.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Information Center Telltale Assembly Replacement»(ref-317132-S01814442972009060900000)
2. «Control Module References»(ref-317173-S10180079792009060900000) for object alarm module replacement, setup, and programming.

1. The DTC will transition to history when the fault is no longer present.
2. A history DTC will clear after 100 malfunction-free ignition cycles.

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UVC) or Object Detection Description and Operation (UD7)

Electrical Information Reference

1. «Circuit Testing»(ref-317172-S12100958872009060900000)
2. «Connector Repairs»(ref-317172-S41839496312009060900000)
3. «Testing for Intermittent Conditions and Poor Connections»(ref-317172-S08096213032009060900000)
4. «Wiring Repairs»(ref-317172-S40815672902009060900000)

Scan Tool Reference

Control Module References for scan tool information

Verify that DTC B1008 is not set.

1. If the DTC is set, program the object alarm module. Refer to «Object Alarm Module Programming and Setup»(ref-317173-S37928154642009060900000) . If the DTC resets, replace the object alarm module.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for object alarm module replacement, setup, and programming

1. The DTC will transition to history when the fault is no longer present.
2. A history DTC will clear after 100 malfunction-free ignition cycles.

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UVC) or Object Detection Description and Operation (UD7)

Electrical Information Reference

1. «Circuit Testing»(ref-317172-S12100958872009060900000)
2. «Connector Repairs»(ref-317172-S41839496312009060900000)
3. «Testing for Intermittent Conditions and Poor Connections»(ref-317172-S08096213032009060900000)
4. «Wiring Repairs»(ref-317172-S40815672902009060900000)

Scan Tool Reference

Control Module References for scan tool information

Verify that DTC B1015 is not set.

1. If the DTC is set, program the object alarm module. Refer to «Object Alarm Module Programming and Setup»(ref-317173-S37928154642009060900000) . If the DTC resets, replace the object alarm module.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for object alarm module replacement, setup, and programming

B1E3A 03

The object alarm module has detected the 8-volt reference circuit is less than 7.2 volts.

B1E3A 07

The object alarm module has detected the 8-volt reference circuit is greater than 9.2 volts.

1. The DTC will transition to history when the fault is no longer present.
2. A history DTC will clear after 100 malfunction-free ignition cycles.

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UVC) or Object Detection Description and Operation (UD7)

Electrical Information Reference

1. «Circuit Testing»(ref-317172-S12100958872009060900000)
2. «Connector Repairs»(ref-317172-S41839496312009060900000)
3. «Testing for Intermittent Conditions and Poor Connections»(ref-317172-S08096213032009060900000)
4. «Wiring Repairs»(ref-317172-S40815672902009060900000)

Scan Tool Reference

Control Module References for scan tool information

Ignition ON, transmission in REVERSE, verify that the scan tool Sensor Voltage Feed Output parameter is 7.2-9.2 volts.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Rear Object Sensor Replacement»(ref-317132-S24017180002009060900000)
2. «Control Module References»(ref-317173-S10180079792009060900000) for object alarm module replacement, setup, and programming.

Symptoms - Object Detection

Note. Review the system operation in order to familiarize yourself with the system functions. Refer to Object Detection Description and Operation (UVC) or Object Detection Description and Operation (UD7) .

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections .

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UVC) or Object Detection Description and Operation (UD7)

Electrical Information Reference

1. «Circuit Testing»(ref-317172-S12100958872009060900000)
2. «Connector Repairs»(ref-317172-S41839496312009060900000)
3. «Testing for Intermittent Conditions and Poor Connections»(ref-317172-S08096213032009060900000)
4. «Wiring Repairs»(ref-317172-S40815672902009060900000)

Scan Tool Reference

Control Module References for scan tool information

1. Ignition ON, verify the park assist system is enabled through the DIC. If the park assist system is manually disabled, enable the system. Refer to the vehicle owners manual for instructions on enabling the system.
2. Observe the scan tool Park Assist Switch parameter while pressing and releasing the park assist disable switch. The parameter should change between Active and Inactive. If the parameter does not cycle between the specified values, refer to Park Assist Disable Switch Circuit Malfunction under «Circuit/System Testing»(ref-317132-S25343662452009060900000) .
3. Observe the scan tool Park Assist Switch LED parameter while pressing and releasing the park assist disable switch. The parameter should change between On and Off. If the parameter does not cycle between the specified values, refer to Park Assist Disable LED Circuit Malfunction under «Circuit/System Testing»(ref-317132-S25343662452009060900000) .
4. Command each of the park assist indicator LEDs ON and OFF with a scan tool. Each of the LEDs should turn ON and OFF as commanded. If any of the LEDs do not turn ON and OFF, refer to «Parking Assist Indicator Malfunction»(ref-317132-S39472689182009060900000) .
5. Ignition ON, vehicle in reverse, verify the scan tool Park Assist System Status parameter is Enable. IMPORTANT: After completing the next step the vehicle might need to be driven in the forward direction at speed greater than 40 km/h (25 mph). If not the specified value, refer to «Diagnostic Aids»(ref-317132-S07199326572009060900000) and the scan tool Park Assist Disable History parameters to determine the cause of the inhibit.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Accessory Switch Replacement (with RPO SLT)»(ref-317147-S31969040112009060900000) or «Accessory Switch Replacement (without RPO SLT)»(ref-317147-S42041820052009060900000)
2. «Control Module References»(ref-317173-S10180079792009060900000) for object alarm module replacement, setup, and programming

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UVC) or Object Detection Description and Operation (UD7)

Electrical Information Reference

1. «Circuit Testing»(ref-317172-S12100958872009060900000)
2. «Connector Repairs»(ref-317172-S41839496312009060900000)
3. «Testing for Intermittent Conditions and Poor Connections»(ref-317172-S08096213032009060900000)
4. «Wiring Repairs»(ref-317172-S40815672902009060900000)

Scan Tool Reference

Control Module References for scan tool information

Ignition ON, perform the scan tool LED Test. Each of the three LEDs should illuminate during the test cycle.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Information Center Telltale Assembly Replacement»(ref-317132-S01814442972009060900000)
2. «Control Module References»(ref-317173-S10180079792009060900000) for the object alarm module replacement, setup, and programming.

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UVC) or Object Detection Description and Operation (UD7)

Electrical Information Reference

1. «Circuit Testing»(ref-317172-S12100958872009060900000)
2. «Connector Repairs»(ref-317172-S41839496312009060900000)
3. «Testing for Intermittent Conditions and Poor Connections»(ref-317172-S08096213032009060900000)
4. «Wiring Repairs»(ref-317172-S40815672902009060900000)

Scan Tool Reference

Control Module References for scan tool information

1. Inspect the rearview camera and verify there are no debris on the lens and that the bezel or bezel seal is not damaged. If debris are found on the lens, clean the lens. If the lens, bezel, or bezel seal are damaged, replace as necessary.
2. Ignition ON, vehicle in PARK, verify the backup lamps are off. If the backup lamps are illuminated, refer to Rearview Camera System Always On under «Circuit/System Testing»(ref-317132-S11765033032009060900000) .
3. Vehicle in REVERSE, verify a clear rear vision image is displayed on the radio. If a clear image is not displayed, refer to Rearview Camera System Does Not Display under «Circuit/System Testing»(ref-317132-S11765033032009060900000) .

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Rearview Camera Replacement»(ref-317132-S00737790722009060900000)
2. «Control Module References»(ref-317173-S10180079792009060900000) for radio replacement, setup, and programming

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UVC) or Object Detection Description and Operation (UD7)

Electrical Information Reference

1. «Circuit Testing»(ref-317172-S12100958872009060900000)
2. «Connector Repairs»(ref-317172-S41839496312009060900000)
3. «Testing for Intermittent Conditions and Poor Connections»(ref-317172-S08096213032009060900000)
4. «Wiring Repairs»(ref-317172-S40815672902009060900000)

1. Inspect the rearview camera and verify there are no debris on the lens and that the bezel or bezel seal is not damaged. If debris are found on the lens, clean the lens. If the lens, bezel, or bezel seal are damaged, replace as necessary.
2. Engine running, vehicle in PARK, verify the backup lamps are off. If the backup lamps are illuminated, refer to Rearview Camera System Always On under «Circuit/System Testing»(ref-317132-S15232388272009060900000) .
3. Park brake applied, transmission in REVERSE, verify a clear rear vision image is displayed on the inside rearview mirror. If a clear image is not displayed, refer to Rearview Camera System Does Not Display under «Circuit/System Testing»(ref-317132-S15232388272009060900000) .

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Rearview Camera Replacement»(ref-317132-S00737790722009060900000)
2. «Control Module References»(ref-317173-S10180079792009060900000) for inside rearview mirror replacement, setup, and programming

Scheme 6

Scheme 7

Object Alarm Module

The object alarm module provides an 8-volt reference and a low reference to the four object alarm sensors. The object alarm module receives individual signals from each of the four sensors and determines the location and distance of an object based on these inputs. When an object is detected, the object alarm module will illuminate the appropriate LED on the information center telltale assembly and send a serial data message to the radio requesting an audible alert.

Object Alarm Sensor

The object alarm sensors are located in the rear bumper of the vehicle. The sensors are used to determine the distance between an object and the rear bumper. Each sensor emits an ultrasonic frequency which is reflected off object located behind the vehicle. These reflections are received by the sensors. The time difference between when the frequency was emitted and when the reflection is received, known as sensor ring time, is used to determine the distance to the object. The sensors report this information to the object alarm module.

Parking Assist Disable Switch

The parking assist disable switch is used as a means to manually disable the system, if desired. Pressing the switch will ground the park assist disable switch signal circuit, indicating to the object alarm module that a system disable is requested. The object alarm module will respond by grounding the indicator control circuit, illuminating the indicator on the switch.

SERVICE PARK ASSIST

The driver information center (DIC) displays SERVICE PARK ASSIST when the object alarm module detects a malfunction in the rear parking assist system and the system is disabled. The DIC also displays SERVICE PARK ASSIST when a loss of communication occurs with the object alarm module.

PARK ASSIST OFF

The PARK ASSIST OFF message is displayed in the DIC when the object alarm system is disabled due to conditions that disable or inhibit the system. The red LED in the information center telltale assembly will be illuminated, as will the disable indicator on the park assist disable switch. The object alarm module requests the DIC display PARK ASSIST OFF when it detects one of the following conditions

1. The rear parking assist system is manually disabled using the parking assist disable switch.
2. The park brake is applied or not fully released.
3. An object is attached to the rear of the vehicle, such as a trailer, bicycle rack, trailer hitch receiver, or tow bar. Also, an object extending beyond a lowered tailgate will disable the system.
4. The object alarm sensors are covered by snow, mud, dirt, slush, or ice.
5. The vehicle bumper is damaged.
6. Excessive paint thickness on a replacement parking assist sensor.
7. The object alarm sensors are disrupted by vibrations, like those caused by a large nearby vehicle or from heavy equipment such as a jackhammer.