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Contents Section: Manual & Power Steering All sections

Power Steering System Cadillac SRX II рестайлинг

Manual & Power Steering 18 illustrations ~4594 words

Fastener Tightening Specifications

ApplicationSpecification
MetricEnglish
Power Steering Fluid Cooler Bracket Bolt9 N.m80 lb in
Power Steering Fluid Cooler Inlet and Outlet Hose Bracket Bolt9 N.m80 lb in
Power Steering Fluid Reservoir Bolt9 N.m80 lb in
Power Steering Fluid Reservoir Bracket Bolt9 N.m80 lb in
Power Steering Gear Inlet Hose Bracket Fastener9 N.m80 lb in
Power Steering Gear Inlet Hose Fitting34 N.m25 lb ft
Power Steering Gear Outlet and Reservoir Inlet Hose Bracket Fastener9 N.m80 lb in
Power Steering Gear Outlet Pipe and Hose Bracket Fastener9 N.m80 lb in
Power Steering Gear Outlet Pipe and Hose Fitting34 N.m25 lb ft
Power Steering Pump Bolt22 N.m16 lb ft
Steering Gear Heat Shield Fastener9 N.m80 lb in
Steering Gear Nut
First Pass60 N.m44 lb ft
Second Pass120°
Steering Gear Pipe Retainer Fastener12 N.m106 lb in
Steering Gear Valve Solenoid Bolt - Lower
First Pass0.5 N.m4.4 lb in
Second Pass2.9 N.m25.7 lb in
Steering Gear Valve Solenoid Bolt - Upper
First Pass1.5 N.m13.3 lb in
Second Pass2.9 N.m25.7 lb in
Steering Linkage Inner Tie Rod70 N.m52 lb ft
Steering Linkage Outer Tie Rod Nut
First Pass25 N.m18 lb ft
Second Pass90°

Fastener Tightening Specifications

Power Steering Pump Specifications

Engine CodeEngine SizeHigh FlowPressure Relief
LPMGPMKPaPSI
LFW3.0L9.05/10.552.39/2.7912000/128001740/1856
LFX3.6L9.05/10.552.39/2.7912000/128001740/1856

Power Steering Pump Specifications

Adhesives, Fluids, Lubricants, and Sealers

ApplicationType of MaterialGM Part Number
United StatesCanada
Power Steering FluidGM DEXRON®-VI Automatic Transmission Fluid - red in color8886100388861004

Adhesives, Fluids, Lubricants, and Sealers

Scheme 1

Scheme 1: NV7
Scheme 1: NV7

Diagnostic Code Index

DTCDescription
DTC C0450DTC C0450 00 Steering Assist Control Solenoid Valve Circuit Malfunction DTC C0450 04 Steering Assist Control Solenoid Valve Circuit Open DTC C0450 08 Steering Assist Control Solenoid Valve Circuit Performance - Signal Invalid DTC C0450 0B Steering Assist Control Solenoid Valve Circuit High Current

DIAGNOSTIC CODE INDEX

Diagnostic Instructions

  1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/srx/ii-2012-2016/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
  2. Review «Strategy Based Diagnosis»(/cadillac/srx/ii-2012-2016/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/srx/ii-2012-2016/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Diagnostic Fault Information

CircuitShort to GroundOpen/High ResistanceShort to VoltageSignal Performance
Variable Effort Steering High ControlC0450 00C0450 04C0450 00C0450 08
Variable Effort Steering Low ControlC0450 00C0450 04C0450 00C0450 08

Circuit/System Description

The electronic brake control module (EBCM) controls the current through the variable effort steering actuator located on the steering gear. The current used to control the actuator is between 0-1 A. At low speeds and in parking lot maneuvers the current is applied to the actuator causing the orifice to open increasing fluid flow and reducing the steering effort. At high speeds the orifice is commanded closed by reducing current through the actuator and restricting fluid flow increasing steering effort. The EBCM monitors and compares the commanded and feedback current parameters to detect malfunctions in the variable effort steering system.

Conditions for Running the DTC

  1. Ignition ON.
  2. Ignition voltage is greater than 8 volts.

Conditions for Setting the DTC

A malfunction, open/high resistance, a invalid signal or a high current is detected on the high control or low control circuit.

Action Taken When the DTC Sets

  1. The driver information center displays SERVICE POWER STEERING SYSTEM.
  2. The variable effort steering system is disabled for the remainder of the ignition cycle.

Conditions for Clearing the DTC

  1. The condition for setting the DTC is no longer present and the DTC is cleared with a scan tool.
  2. The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.

Diagnostic Aids

The vehicle may need to be driven to view full actuator commanded and actuator feedback data parameters.

Reference Information

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

  1. «Circuit Testing»(/cadillac/srx/ii-2012-2016/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
  2. «Connector Repairs»(/cadillac/srx/ii-2012-2016/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
  3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/srx/ii-2012-2016/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
  4. «Wiring Repairs»(/cadillac/srx/ii-2012-2016/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Circuit/System Testing

Note. It is recommended that Component Testing is performed before Circuit/System Testing when diagnosing the actuator because the module will default and does not supply voltage to the sensor when the DTC is set.

  1. Ignition OFF, disconnect the harness connector at the M72 Variable Power Steering Solenoid Valve.
  2. Ignition ON, verify that a test lamp illuminates between the control circuit terminal 2 and ground. If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance.
  3. Ignition OFF, connect the test lamp between the control circuit terminal 1 and the control circuit terminal 2.
  4. Ignition ON, verify the test lamp briefly illuminates for approximately 1 second, then turns OFF. If the test lamp is always ON, test the control circuit terminal 1 for a short to ground. If the circuit tests normal, replace the K17 Electronic Brake Control Module (EBCM). If the test lamp is always OFF, test the control circuit terminal 1 for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K17 Electronic Brake Control Module (EBCM).
  5. If all circuits test normal, test or replace the M72 Variable Power Steering Solenoid Valve.

Component Testing

Static Test

  1. Ignition OFF, disconnect the harness connector at the M72 Variable Power Steering Solenoid Valve.
  2. Test for 2.5-10 ohms between the control terminals 1 and 2. If not within the specified range, replace the M72 Variable Power Steering Solenoid Valve.
  3. Test for infinite resistance between each terminal and the M72 Variable Power Steering Solenoid Valve housing/case. If not the specified value, replace the M72 Variable Power Steering Solenoid Valve.

Repair Instructions

  1. «Steering Gear Valve Solenoid Replacement»(/cadillac/srx/ii-2012-2016/remont/manual-power-steering/#power-steering-system)
  2. «Steering Gear Replacement»(/cadillac/srx/ii-2012-2016/remont/manual-power-steering/#power-steering-system)
  3. «Control Module References»(/cadillac/srx/ii-2012-2016/remont/communication-devices/#programming-and-setup-all-systems__control-module-references)

Note. Review the system description and operation in order to familiarize yourself with the system functions. Refer to Power Steering System Description and Operation .

Visual/Physical Inspection

  1. Inspect for aftermarket devices which could affect the operation of the power steering system.
  2. Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
  3. Inspect for leaking power steering components. If necessary, refer to «Power Steering Fluid Leaks»(/cadillac/srx/ii-2012-2016/remont/manual-power-steering/#power-steering-system__power-steering-fluid-leaks) .
  4. Verify the power steering fluid level per operating specification.
  5. Inspect the power steering fluid for the following indications of contamination: Milky fluid - water Brown fluid - burnt Debris in fluid - plastic or dirt
  6. If necessary, flush the power steering system.

Symptoms List

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

  1. «Power Steering Fluid Leaks»(/cadillac/srx/ii-2012-2016/remont/manual-power-steering/#power-steering-system__power-steering-fluid-leaks)
  2. «Rattle, Clunk, Pop or Shudder Noise from the Power Steering System»(/cadillac/srx/ii-2012-2016/remont/manual-power-steering/#power-steering-system)
  3. «Whine or Growl Noise from the Power Steering System»(/cadillac/srx/ii-2012-2016/remont/manual-power-steering/#power-steering-system)
  4. «Steering Effort Too Easy in One or Both Directions»(/cadillac/srx/ii-2012-2016/remont/manual-power-steering/#power-steering-system__steering-effort-too-easy-in-one)

Special Tools

CH-44721 Power Steering Analyzer

For equivalent regional tools, refer to Special Tools .

Scheme 2

Scheme 2: Rack and Pinion System
Scheme 2: Rack and Pinion System
CalloutComponent Name
1Power Steering Return Hose
2Power Steering Pressure Hose

Test Description

The numbers below refer to the step numbers on the diagnostic table.

  1. 5 This step tests the system for restrictions.
  2. 7 This step tests the following components for the following conditions: The power steering pump for internal leaks The power steering pipes for kinks
  3. 8 This step tests the ability of the power steering pump to regulate flow at maximum pressure.
  4. 10 This step tests the ability of the power steering pump to regulate flow under normal operating conditions.
  5. 12 This step tests the internal components of the power steering pump and the steering gear.
StepActionValue(s)YesNo
DEFINITION: The Power Steering System Test procedure will perform the following functions: Test the operation of the hydraulic power steering system. Test the operation of the power steering pump and the steering gear. Identify restrictions in the system.
1Inspect the power steering fluid for the following indications of contamination: Milky fluid - water Brown fluid - burnt Debris in fluid - plastic or dirt Is the fluid free of contamination?Go to Step 3Go to Step 2
2Flush the power steering system. Refer to Power Steering System Flushing . Did you complete the procedure?Go to Step 3
3NOTE: In order to accurately diagnose the system, the malfunction must be present during the test procedure. Attempt to duplicate the condition.Is the condition present?Go to Step 4System OK
4Turn the ignition switch to the OFF position. Place a drain pan under the vehicle in order to catch any power steering fluid. Disconnect the power steering pressure pipe/hose from the power steering pump or the steering gear as necessary. Install the CH-44721 analyzer. Fill the power steering system. Refer to Checking and Adding Power Steering Fluid . Did you complete the installation?Go to Step 5
5Fully open the CH-44721 analyzer valve. Start the engine. CAUTION: Do not hold the steering wheel in the full turn position longer than 5 seconds, as damage to the steering pump may result. Turn the steering wheel and BRIEFLY hold the steering wheel against the steering stop in order to release any trapped air from the system. Inspect and ensure that all of the power steering pipe/hose connections are not leaking. With the steering wheel OFF of the steering stop, observe the pressure reading. Is the pressure reading greater than the specified value?1379 kPa (200 psi)Go to Step 6Go to Step 7
6NOTE: A restriction may be present in the power steering system. Turn OFF the engine IMMEDIATELY. Locate and repair the restriction.Did you complete the repair?Go to Step 15
7Allow the engine to run until the engine reaches full operating temperature. Record the pressure reading and flow reading. Partially close the CH-44721 analyzer valve until the system pressure reaches the specified value, then record the FLOW reading. Subtract the second flow reading from the first flow reading. Is the flow DECREASE greater than 3.8 L (1 gal) per minute?4827 kPa (700 psi)Go to Step 11Go to Step 8
8NOTE: Do not leave the valve closed for more than 5 seconds, or internal pump damage could accrue. Fully close then open the CH-44721 analyzer valve 3 times. Record all of the high pressure readings. Refer to Power Steering Pump Specifications for the power steering system pressure relief specifications.Are the 3 high pressure readings within specifications?Go to Step 9Go to Step 13
9Are the three high pressure readings within 245 kPa (50 psi) of each other?Go to Step 10Go to Step 13
10Increase the engine speed to approximately 1,500 RPM. Record the flow reading. Refer to Power Steering Pump Specifications for the power steering system high flow specifications. Is the actual flow reading within specifications?Go to Step 11Go to Step 13
11Is the difference between the actual flow reading and the maximum flow specification more than 3.8 L (1 gal) per minute?Go to Step 13Go to Step 12
12Turn the steering wheel from steering stop to steering stop and record the FLOW readings at each stop. Is the flow LOWER than 3.8 L (1 gal) per minute?Go to Step 15Go to Step 14
13Replace the power steering pump. Refer to Power Steering Pump Replacement . Did you complete the replacement?Go to Step 15
14The steering gear is leaking across the piston or bypassing the valve circuit. Replace the steering gear. Refer to Steering Gear Replacement . Did you complete the replacement?Go to Step 15
15Test the power steering system for the original condition. Does the original condition still exist?Go to Step 5Go to Step 16
16Disconnect and remove the CH-44721 analyzer from the vehicle. Connect the vehicle power steering pipes/hoses. Fill and bleed the power steering system. Refer to Power Steering System Bleeding . Did you complete the procedure?System OK
NOTE
In order to accurately diagnose the system, the malfunction must be present during the test procedure.
CAUTION
Do not hold the steering wheel in the full turn position longer than 5 seconds, as damage to the steering pump may result.
NOTE
A restriction may be present in the power steering system. Turn OFF the engine IMMEDIATELY.
NOTE
Do not leave the valve closed for more than 5 seconds, or internal pump damage could accrue.

Power Steering System Test

Power Steering Fluid Leaks

Special Tools

GE-28431-6 Fluorescent Dye

For equivalent regional tools, refer to Special Tools .

Note. If fluid is found on a manual steering gear or on an electronic power steering gear, do not replace steering gear. Vehicles equipped with these systems do not use hydraulic power steering fluid. The fluid may be assembly fluid or another system fluid. Clean the components and identify the sources of the leaks before attempting to repair or replace any power steering components. Clearly mark all locations of leaks with paint, marker, or equivalent for warranty identification and engineering root cause analysis.

Some customers may comment on a fluid LEAK or NOISY power steering pump. Upon inspection, the technician may find power steering fluid leaking from the hydraulic power steering system. Use the following inspection procedure in order to diagnose the source of the leak and take appropriate action to correct the condition.

  1. Inspect the fluid level in the power steering fluid reservoir. Refer to «Checking and Adding Power Steering Fluid»(/cadillac/srx/ii-2012-2016/remont/manual-power-steering/#power-steering-system__checking-and-adding-power-steering-fluid) . If the fluid level is NOT low, a careful analysis of the condition is necessary to confirm that the type of fluid is actually power steering fluid.
  2. Visually inspect the power steering system and components where the fluid has accumulated.
  3. Use a clean towel or a rag in order to completely clean off all residual fluid from the power steering components.
  4. Add 30 cc (1 oz) of GE-28431-6 dye to the power steering fluid.
  5. Start the vehicle and warm the steering system by turning to the left steering stop and to the right steering stop 10 times with the weight of the vehicle on the front tires.
  6. Turn vehicle engine OFF.
  7. Shine a black light on the area where the residual fluid accumulated. Identify the sources of the leaks.
  8. Mark all locations of leaks with paint, marker, or equivalent.
  9. Repair or replace all affected components.
StepActionYesNo
1Did you review the Power Steering System Description and Operation and perform the necessary inspections?Go to Step 2Go to Symptoms - Power Steering System
2Verify that a rattle, clunk or shudder noise is present. Is a rattle, clunk or shudder noise present?Go to Step 3System OK
3Inspect the power steering hoses for proper routing and clearance. Is the routing or clearance of the power steering hoses incorrect?Go to Step 11Go to Step 4
4Inspect the engine drive belt for cracking or excessive wear. Refer to Drive Belt Falls Off and Excessive Wear Diagnosis . Is the drive belt cracked or excessively worn?Go to Step 12Go to Step 5
5Inspect the power steering pump pulley for damage. Is the power steering pump pulley damaged?Go to Step 13Go to Step 6
6Inspect the power steering pump for the proper installation. Refer to Power Steering Pump Replacement . Is the power steering pump installation incorrect?Go to Step 14Go to Step 7
7Inspect the power steering gear for the proper installation. Refer to Steering Gear Replacement . Is the power steering gear installation incorrect?Go to Step 15Go to Step 8
8Inspect for looseness in the inner and outer tie rods. Refer to Steering Linkage Inner Tie Rod Inspection , and to Steering Linkage Outer Tie Rod Inspection . Are the inner tie rods or the outer tie rods worn?Go to Step 16Go to Step 9
9Inspect the suspension. Refer to Noise Diagnosis - Front Suspension . Is the suspension worn?Go to Step 17Go to Step 10
10Inspect the intermediate shaft. Is the intermediate shaft worn?Go to Step 18Go to Step 3
11Adjust or replace the hoses. Refer to the appropriate procedure(s): Power Steering Fluid Reservoir Outlet Hose Replacement (LF1, LFW, or LFX) Power Steering Gear Inlet Pipe/Hose Replacement (LHD and LF1, or LFW, or LFX) Power Steering Gear Outlet and Fluid Reservoir Inlet Hose Replacement (LHD and LF1, or LFW, or LFX) Did you complete the repair?Go to Step 19
12Replace the engine drive belt. Refer to Drive Belt Replacement . Did you complete the repair?Go to Step 19
13Replace the power steering pump pulley. Refer to Power Steering Pump Pulley Replacement . Did you complete the repair?Go to Step 19
14Install the power steering pump correctly. Refer to Power Steering Pump Replacement . Did you complete the repair?Go to Step 19
15Install the power steering gear correctly. Refer to Steering Gear Replacement . Did you complete the repair?Go to Step 19
16Replace the tie rod. Refer to Steering Linkage Inner Tie Rod Replacement , or to Steering Linkage Outer Tie Rod Replacement . Did you complete the repair?Go to Step 19
17Replace the worn suspension components. Did you complete the repair?Go to Step 19
18Replace the intermediate shaft. Refer to Intermediate Steering Shaft Replacement . Did you complete the repair?Go to Step 19
19Operate the system in order to verify the repair. Did you correct the condition?System OKGo to Step 3

Rattle, Clunk, Pop or Shudder Noise from the Power Steering System

Special Tools

CH-39570 Chassis Ear

For equivalent regional tools, refer to Special Tools .

StepActionYesNo
1Did you review the Power Steering System Description and Operation and perform the necessary inspections?Go to Step 2Go to Symptoms - Power Steering System
2Verify that a whine or growl noise is present. Is a whine or growl noise present?Go to Step 3System OK
3Inspect the power steering fluid for the following indications of contamination: Milky fluid - water Brown Fluid - burnt Debris in fluid - plastic or dirt Is the fluid free of contamination?Go to Step 5Go to Step 4
4Flush the power steering system. Refer to Power Steering System Flushing . Did you complete the procedure?Go to Step 11Go to Step 5
5Use the CH-39570 ear in order to inspect the steering gear for a whine or growl noise. Is the noise present at the steering gear?Go to Step 8Go to Step 6
6Use the CH-39570 ear in order to inspect the power steering pump for a whine or growl noise. Is the noise present at the power steering pump?Go to Step 9Go to Step 7
7Use the CH-39570 ear in order to inspect the power steering pipes and hoses for a whine or growl noise. Is the noise present at the power steering pipes or hoses?Go to Step 10Go to Step 2
8Replace the steering gear. Refer to Steering Gear Replacement . Did you complete the repair?Go to Step 11
9Replace the power steering pump. Refer to Power Steering Pump Replacement . Did you complete the repair?Go to Step 11
10Adjust the routing of the power steering pipes or hoses. Did you complete the repair?Go to Step 11
11Operate the system in order to verify the repair. Did you correct the condition?System OKGo to Step 3

Whine or Growl Noise from the Power Steering System

Poor Return of Steering Wheel

StepActionYesNo
DEFINITION: After completing a turn, extra steering input is required for the steering wheel to return to center.
1Did you review the Power Steering System Description and Operation and perform the necessary inspections?Go to Step 2Go to Symptoms - Power Steering System
2Verify that poor return of the steering wheel is present. Does the system operate normally?System OKGo to Step 3
3Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Lubricate the tie rod ends and ball joints, if applicable. Inspect the suspension system for worn or damaged components. Repair as necessary. Did you find and correct the condition?Go to Step 12Go to Step 4
4Rotate the steering wheel ONE revolution in both directions. Rotate the steering wheel back to the original position. Was the steering wheel abnormally difficult to rotate in either direction?Go to Step 5Go to Step 10
5NOTE: Position the wheels straight ahead. Do NOT rotate the steering wheel more than one complete revolution from center. Disconnect the intermediate shaft from the steering column. Note the position of the steering wheel and rotate the steering wheel ONE revolution in both directions. Rotate the steering wheel back to the original position. Was the steering wheel abnormally difficult to rotate in either direction?Go to Step 11Go to Step 6
6Inspect the intermediate shaft for stiff or loose joints. Repair or replace as necessary. Did you find and complete the repair?Go to Step 12Go to Step 7
7Remove the front tire and wheel assemblies. Refer to Tire and Wheel Removal and Installation . Disconnect both outer tie rod ends from the steering knuckles. Use your hands in order to move the tie rod end studs. If abnormally difficult to move, replace the tie rod end. If equipped with recirculating ball steering, ensure that idler and pitman arm joints are not to stiff. Repair as necessary. Did you find and complete the repair?Go to Step 12Go to Step 8
8Use your hands to rotate the steering knuckle inboard and outboard in order to inspect for a binding strut bearings, ball joints, or axle. Repair or replace any abnormally stiff or loose components. Did you find and complete the repair?Go to Step 12Go to Step 9
9Inspect for binding in the steering gear. If a binding is present, repair or replace the steering gear. Did you find and complete the repair?Go to Step 12Go to Step 10
10Inspect the wheel alignment and adjust as necessary. Refer to Wheel Alignment Measurement . Did you find and complete the repair?Go to Step 12
11Inspect the steering column for a binding. If a binding is present, repair or replace the steering column as necessary. Did you find and complete the repair?Go to Step 12
12Operate the system in order to verify the repair. Did you correct the condition?System OK
NOTE
Position the wheels straight ahead. Do NOT rotate the steering wheel more than one complete revolution from center.

Poor Return of Steering Wheel

Steering Effort Too Easy in One or Both Directions

StepActionYesNo
1Did you review the Power Steering System Description and perform the necessary inspections?Go to Step 2Go to Symptoms - Power Steering System
2Verify that the steering effort is too easy in one or both directions. Does the system operate normally?System OKGo to Step 3
3Perform the power steering test procedure. Refer to Power Steering System Test . Did you complete the procedure?Go to Step 4
4Operate the system in order to verify the repair. Did you correct the condition?System OKGo to Step 3

Steering Effort Too Easy in One or Both Directions

Steering Effort Hard in One or Both Directions

StepActionYesNo
1Did you review the Power Steering System General Description and perform the necessary inspections?Go to Step 2Go to Symptoms - Power Steering System
2Verify that the steering effort is hard in one or both directions. Does the system operate normally?System OKGo to Step 3
3Perform the power steering test procedure. Refer to Power Steering System Test . Did you complete the procedure?Go to Step 4
4Operate the system in order to verify the repair. Did you correct the condition?System OKGo to Step 3

Steering Effort Hard in One or Both Directions

Steering Linkage Inner Tie Rod Inspection

Special Tools

GE-8001 Dial Indicator Set

For equivalent regional tools, refer to Special Tools .

  1. Turn the ignition key to the ON position with the engine OFF.
  2. With the aid of an assistant, turn the steering wheel to the full stop position and hold the steering wheel in that position until the test is complete. Part of the steering linkage inner tie rod (2) being tested should be inside the steering gear housing. The inner tie rod housing (1) being tested should be inside the steering gear housing and seated against the steering stop.
  3. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/srx/ii-2012-2016/remont/hoistjack/#general-information) .
  4. If there is not a good location for the GE-8001 dial indicator pointer at the steering gear housing, install a large worm gear hose clamp (3) to the steering gear housing over the larger steering gear boot clamp and align the clamp so that the screw can be a location for the GE-8001 dial indicator pointer.
  5. Install the GE-8001 dial indicator between the inner tie rod and the steering gear housing or the worm gear clamp in such a way as to measure the lash between the inner tie rod and the steering gear housing. The lash between the inner tie rod and the steering gear housing is equal to the lash between the inner tie rod and the inner tie rod housing because the inner tie rod housing is inside the steering gear housing during this procedure.
  6. Grasping the tire at the 3 o'clock (2) and 9 o'clock (1) positions, gently push in on one side of the tire in order to remove any lash.
  7. Zero the GE-8001 dial indicator.
  8. On the same side of the tire previously pushed in, gently pull out and measure the lash.
  9. Record the measurement shown on the GE-8001 dial indicator.
  10. If the measured value exceeds 0.5 mm (0.02 in), replace the inner tie rod. Refer to «Steering Linkage Inner Tie Rod Replacement»(/cadillac/srx/ii-2012-2016/remont/manual-power-steering/#power-steering-system) .
  11. Repeat the procedure for the other side.

Steering Linkage Outer Tie Rod Inspection

Special Tools

GE-8001 Dial Indicator Set

For equivalent regional tools, refer to Special Tools .

  1. Inspect the outer tie rod seal. If the outer tie rod seal is torn, replace the outer tie rod. Refer to «Steering Linkage Outer Tie Rod Replacement»(/cadillac/srx/ii-2012-2016/remont/manual-power-steering/#power-steering-system) .
  2. Raise the side of the vehicle being inspected with a floor jack while maintaining contact between the opposite wheel and the shop floor. Support the lower control arm with a floor jack stand as far outboard as possible and remove the floor jack. Refer to «Lifting and Jacking the Vehicle»(/cadillac/srx/ii-2012-2016/remont/hoistjack/#general-information) .
  3. Install the GE-8001 dial indicator between the outer tie rod and the steering knuckle as shown in the graphic. Note that the tire and wheel assembly is shown removed only for clarification of the GE-8001 dial indicator position.
  4. Grasping the tire at the 3 o'clock (2) and 9 o'clock (1) positions, gently push in on one side of the tire to remove any lash.
  5. Zero the GE-8001 dial indicator.
  6. On the same side of the tire previously pushed inwards, gently pull outwards and measure the lash.
  7. Record the measurement shown on the GE-8001 dial indicator.
  8. If the measured value exceeds 0.5 mm (0.02 in), replace the outer tie rod. Refer to «Steering Linkage Outer Tie Rod Replacement»(/cadillac/srx/ii-2012-2016/remont/manual-power-steering/#power-steering-system) .
  9. Repeat the procedure for the other side.
  1. Fill the power steering fluid reservoir with fluid to the minimum system level, the FULL COLD level, or the middle of the hash mark on the cap stick fluid level indicator, as applicable.
  2. Raise the vehicle until the front wheels are off the ground. Refer to «Lifting and Jacking the Vehicle»(/cadillac/srx/ii-2012-2016/remont/hoistjack/#general-information) .
  3. With the key in the ON position and with the engine OFF, turn the steering wheel from stop to stop 12 times. If the vehicle is equipped with longer length power steering hoses, turn the steering wheel from stop to stop 15 to 20 times.
  4. Verify the power steering fluid level. Refer to «Checking and Adding Power Steering Fluid»(/cadillac/srx/ii-2012-2016/remont/manual-power-steering/#power-steering-system__checking-and-adding-power-steering-fluid) .
  5. Start the engine. Rotate the steering wheel from left to right. Inspect the power steering system for signs of cavitation or fluid aeration, like pump noise or whining.
  6. Verify the fluid level. Repeat the bleed procedure, if necessary.
  7. Lower the vehicle.

Checking and Adding Power Steering Fluid

  1. Run the engine until the power steering fluid reaches about 80°C (170°F).
  2. Turn the engine OFF.
  3. If equipped with the LF1 engine, remove the intake manifold cover. Refer to «Intake Manifold Cover Replacement»(/cadillac/srx/ii-2012-2016/remont/mechanical/#engine-mechanical-36l-lfx-repair-instructions-on-vehicle) .
  4. Clean the power steering fluid reservoir and the reservoir cap.
  5. Remove the reservoir cap.
  6. Inspect the power steering fluid level on the cap stick. Ensure that the fluid level is at the MAX mark on the cap stick.
  7. Add the proper fluid to the reservoir, if necessary. Refer to «Adhesives, Fluids, Lubricants, and Sealers»(/cadillac/srx/ii-2012-2016/remont/manual-power-steering/#power-steering-system__adhesives-fluids-lubricants-and-sealers) .
  8. Install the reservoir cap.
  9. If equipped with the LF1 engine, install the intake manifold cover. Refer to «Intake Manifold Cover Replacement»(/cadillac/srx/ii-2012-2016/remont/mechanical/#engine-mechanical-36l-lfx-repair-instructions-on-vehicle) .

Note. Do not reuse any drained power steering fluid regardless of appearance or condition.

  1. Raise the vehicle until the front wheels are off the ground. Refer to «Lifting and Jacking the Vehicle»(/cadillac/srx/ii-2012-2016/remont/hoistjack/#general-information) .
  2. Place a large drain pan under the vehicle in order to collect the draining fluid.
  3. Remove the fluid return hose at the power steering fluid reservoir or the pump inlet connection, as applicable.
  4. Plug the reservoir return hose inlet connection on the power steering fluid reservoir or the pump, as applicable.
  5. Have an assistant maintain the minimum fluid level in the reservoir using clean, new power steering fluid. Refer to «Checking and Adding Power Steering Fluid»(/cadillac/srx/ii-2012-2016/remont/manual-power-steering/#power-steering-system__checking-and-adding-power-steering-fluid) .
  6. With the key in the ON position and with the engine OFF, turn the steering wheel fully to the left and to the right. Continue until the fluid from the return hose runs clear.
  7. Remove the plug and install the fluid return hose to the power steering fluid reservoir or the pump inlet connection, as applicable.
  8. Bleed the power steering system. Refer to «Power Steering System Bleeding»(/cadillac/srx/ii-2012-2016/remont/manual-power-steering/#power-steering-system) .
  9. Inspect the power steering fluid for the following indications of contamination: Milky fluid - water Brown fluid - burnt Plastic debris or dirt chunks
  10. If the fluid is contaminated, repeat steps 3-9.
  11. Remove the drain pan.
  12. Lower the vehicle.

Scheme 3

Scheme 3: Power Steering Fluid Reservoir Replacement (LF1, LFW, or LFX)
Scheme 3: Power Steering Fluid Reservoir Replacement (LF1, LFW, or LFX)
CalloutComponent Name
Preliminary Procedure Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement Remove the power steering fluid from the reservoir. Place a drain pan under the vehicle.
1Power Steering Reservoir Outlet Hose
2Power Steering Gear Outlet Hose
3Bolt CAUTION: Refer to Fastener Caution . Tighten 9 N.m (80 lb in)
4Power Steering Reservoir Procedure Use a flat bladed tool to disengage the reservoir from the reservoir bracket. Fill and bleed the power steering system. Refer to Power Steering System Bleeding
CAUTION
Refer to Fastener Caution .

Power Steering Fluid Reservoir Replacement (LF1, LFW, or LFX)

Scheme 4

Scheme 4: Power Steering Fluid Reservoir Bracket Replacement (LF1, LFW, or LFX)
Scheme 4: Power Steering Fluid Reservoir Bracket Replacement (LF1, LFW, or LFX)
CalloutComponent Name
Preliminary Procedure Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement Remove the power steering Reservoir from the bracket only. Do not remove the hoses. Refer to Power Steering Fluid Reservoir Replacement (LF1, LFW, or LFX) .
1Bolt (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten 9 N.m (80 lb in)
2Power Steering Reservoir Bracket
CAUTION
Refer to Fastener Caution .

Power Steering Fluid Reservoir Bracket Replacement (LF1, LFW, or LFX)

Scheme 5

Scheme 5: Power Steering Pump Pulley Replacement
Scheme 5: Power Steering Pump Pulley Replacement
CalloutComponent Name
Preliminary Procedure Remove the power steering pump. Refer to Power Steering Pump Replacement .
1Power Steering Pump Pulley Procedure Use the CH-25034-C remover to remove the power steering pump pulley. Use the CH-25033-C installer to install the power steering pump pulley. NOTE: Ensure the power steering pump pulley is flush with the power steering pump shaft and is aligned with the other pulleys. Special Tools CH-25033-C Pulley Installer CH-25034-C Pulley Remover For equivalent regional tools, refer to Special Tools .
NOTE
Ensure the power steering pump pulley is flush with the power steering pump shaft and is aligned with the other pulleys.

Power Steering Pump Pulley Replacement

Scheme 6

Scheme 6: Power Steering Pump Replacement
Scheme 6: Power Steering Pump Replacement
CalloutComponent Name
Preliminary Procedure Place drain pans under the vehicle. Remove as much power steering fluid from the power steering fluid reservoir as possible. Remove the drive belt from the power steering pump pulley only. Refer to Drive Belt Replacement . Remove the right front tire and wheel assembly. Refer to Tire and Wheel Removal and Installation . Disconnect the power steering fluid reservoir outlet hose from the power steering pump. Refer to Power Steering Fluid Reservoir Outlet Hose Replacement (LF1, LFW, or LFX) . Disconnect the power steering gear inlet hose from the power steering pump. Refer to Power Steering Gear Inlet Pipe/Hose Replacement (LHD and LF1, or LFW, or LFX) .
1Power Steering Pump Bolt (Qty: 3) CAUTION: Refer to Fastener Caution . TIP: Note the routing for installation. Tighten 22 N.m (16 lb ft)
2Power Steering Pump Procedure Remove the power steering pump through the right front wheel well opening. Transfer the power steering pump pulley. Refer to Power Steering Pump Pulley Replacement . Fill and bleed the power steering system. Refer to Power Steering System Bleeding . Clean any excess power steering fluid from the vehicle.
CAUTION
Refer to Fastener Caution .

Power Steering Pump Replacement

Scheme 7

Scheme 7: Steering Linkage Outer Tie Rod Replacement
Scheme 7: Steering Linkage Outer Tie Rod Replacement
CalloutComponent Name
Preliminary Procedures Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Remove the front tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
1Steering Linkage Outer Tie Rod Nut CAUTION: Refer to Fastener Caution . Tighten 25 N.m (18 lb ft) 90 degrees
2Steering Linkage Inner Tie Rod Nut Procedure Use paint in order to place match marks on the steering linkage inner tie rod nut and on the steering linkage inner tie rod. During installation, align the match marks. Do not tighten the nut during installation. Tighten the nut after adjusting the front toe. Refer to Wheel Alignment - Steering Wheel Angle and/or Front Toe Adjustment .
3Steering Linkage Outer Tie Rod CAUTION: Do not free the ball stud by using a pickle fork or a wedge-type tool. Damage to the seal or bushing may result. Procedure Use the CH-24319-B puller in order to separate the steering linkage outer tie rod from the steering knuckle. Inspect the steering linkage inner tie rod for bent or damaged threads. Clean the tapered surface of the steering knuckle. After the installation is complete, measure and adjust the front toe. Refer to Wheel Alignment - Steering Wheel Angle and/or Front Toe Adjustment . Special Tools CH-24319-B Steering Linkage and Tie Rod Puller For equivalent regional tools, refer to Special Tools .
CAUTION
Refer to Fastener Caution .
CAUTION
Do not free the ball stud by using a pickle fork or a wedge-type tool. Damage to the seal or bushing may result.

Steering Linkage Outer Tie Rod Replacement

Scheme 8

Scheme 8: Steering Gear Boot Replacement
Scheme 8: Steering Gear Boot Replacement
CalloutComponent Name
Preliminary Procedures Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Remove the steering linkage outer tie rod. Refer to Steering Linkage Outer Tie Rod Replacement . If equipped, remove the steering gear heat shield. Refer to Steering Gear Heat Shield Replacement .
1Steering Linkage Inner Tie Rod Nut
2Steering Gear Boot Outer Clamp
3Steering Gear Boot Inner Clamp Procedure Cut the old steering gear boot inner clamp. Discard the clamp. Use the CH-22610 pliers in order to crimp the new steering gear inner boot clamp. Special Tools CH-22610 Keystone Clamp Pliers For equivalent regional tools, refer to Special Tools .
4Steering Gear Boot Procedure After removing the boot, inspect the inner tie rod for evidence of corrosion or contamination. If none is evident, continue with the repair. If corrosion or contamination is evident, replace the steering gear. Refer to Steering Gear Replacement . Ensure the new steering gear boot is seated in the assembly groove of the steering gear.

Steering Gear Boot Replacement

Removal Procedure

  1. Place drain pans under the vehicle.
  2. Remove as much power steering fluid from the reservoir as possible.
  3. Remove the right front wheelhouse liner. Refer to «Front Wheelhouse Liner Replacement»(/cadillac/srx/ii-2012-2016/remont/frames-subframes-crossmembers/#frame-and-underbody) .
  4. Remove the front bumper fascia. Refer to «Front Bumper Fascia Replacement»(/cadillac/srx/ii-2012-2016/remont/exterior-body-panels/#bumpers-and-fascias__front-bumper-fascia-replacement) .
  5. Remove the bolt (4) from the power steering fluid cooler inlet and outlet hose bracket.
  6. Disconnect the power steering fluid cooler inlet and outlet hose bracket from the body.
  7. Compress the hose clamp and disconnect the power steering fluid cooler outlet hose (1) from the power steering fluid reservoir inlet pipe (2).
  8. Compress the hose clamp and disconnect the power steering fluid cooler inlet hose from the power steering gear outlet pipe (3).
  9. Compress the hose clamp and disconnect the power steering fluid cooler inlet hose (3) from the power steering fluid cooler inlet pipe (2).
  10. Compress the hose clamp and disconnect the power steering fluid cooler outlet hose (4) from the power steering fluid cooler outlet pipe (1).
  11. Remove the power steering fluid cooler inlet and outlet hose assembly (2) from the vehicle.

Installation Procedure

  1. Ensure the hole (1) in the power steering fluid cooler inlet and outlet hose bracket is large enough for the bolt. If necessary, cut or grind off the tab from the bracket.
  2. Position the power steering fluid cooler inlet and outlet hose assembly (2) in the vehicle.
  3. Compress the hose clamp and connect the power steering fluid cooler outlet hose (4) to the power steering fluid cooler outlet pipe (1).
  4. Compress the hose clamp and connect the power steering fluid cooler inlet hose (3) to the power steering fluid cooler inlet pipe (2).
  5. Compress the hose clamp and connect the power steering fluid cooler inlet hose to the power steering gear outlet pipe (3).
  6. Compress the hose clamp and connect the power steering fluid cooler outlet hose (1) to the power steering fluid reservoir inlet pipe (2).
  7. Connect the power steering fluid cooler inlet and outlet hose bracket to the body.
  8. Install the bolt (4) to the power steering fluid cooler inlet and outlet hose bracket and tighten to 9 N.m (80 lb in).
  9. Install the front bumper fascia. Refer to «Front Bumper Fascia Replacement»(/cadillac/srx/ii-2012-2016/remont/exterior-body-panels/#bumpers-and-fascias__front-bumper-fascia-replacement) .
  10. Install the right front wheelhouse liner. Refer to «Front Wheelhouse Liner Replacement»(/cadillac/srx/ii-2012-2016/remont/frames-subframes-crossmembers/#frame-and-underbody) .
  11. Fill and bleed the power steering system. Refer to «Power Steering System Bleeding»(/cadillac/srx/ii-2012-2016/remont/manual-power-steering/#power-steering-system) .
  12. Clean any excess power steering fluid from the vehicle.
  13. Remove the drain pans.

Scheme 9

Scheme 9: Power Steering Fluid Cooler Replacement
Scheme 9: Power Steering Fluid Cooler Replacement
CalloutComponent Name
Preliminary Procedure Place drain pans under the vehicle. Remove as much power steering fluid from the reservoir as possible. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Remove the front bumper fascia. Refer to Front Bumper Fascia Replacement .
1Power Steering Fluid Cooler Hose Clamp (Qty: 2) Procedure Loosen the hose clamps and disconnect the power steering fluid cooler inlet and outlet hoses from the power steering fluid cooler.
2Power Steering Fluid Cooler Bracket Bolt (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten 9 N.m (80 lb in)
3Power Steering Fluid Cooler Procedure Fill and bleed the power steering system. Refer to Power Steering System Bleeding . Clean any excess power steering fluid from the vehicle.
CAUTION
Refer to Fastener Caution .

Power Steering Fluid Cooler Replacement

  1. Remove the intake manifold cover. Refer to «Intake Manifold Cover Replacement»(/cadillac/srx/ii-2012-2016/remont/mechanical/#engine-mechanical-36l-lfx-repair-instructions-on-vehicle) .
  2. Place drain pans under the vehicle.
  3. Remove as much power steering fluid from the power steering fluid reservoir (3) as possible.
  4. Compress the power steering fluid reservoir outlet hose clamp (1) and disconnect the power steering fluid reservoir outlet hose (2) from the power steering fluid reservoir.
  5. Remove the right front tire and wheel assembly. Refer to «Tire and Wheel Removal and Installation»(/cadillac/srx/ii-2012-2016/remont/wheel-tire-system/#tires-and-wheels) .
  6. Compress the power steering fluid reservoir outlet hose clamp (1) and disconnect the power steering fluid reservoir outlet hose (2) from the power steering pump (3).
  7. Remove the power steering fluid reservoir outlet hose from the vehicle.
  1. Position the power steering fluid reservoir outlet hose in the vehicle.
  2. Compress the power steering fluid reservoir outlet hose clamp (1) and connect the power steering fluid reservoir outlet hose (2) to the power steering pump (3).
  3. Install the right front tire and wheel assembly. Refer to «Tire and Wheel Removal and Installation»(/cadillac/srx/ii-2012-2016/remont/wheel-tire-system/#tires-and-wheels) .
  4. Compress the power steering fluid reservoir outlet hose clamp (1) and connect the power steering fluid reservoir outlet hose (2) to the power steering fluid reservoir (3).
  5. Fill and bleed the power steering system. Refer to «Power Steering System Bleeding»(/cadillac/srx/ii-2012-2016/remont/manual-power-steering/#power-steering-system) .
  6. Clean any excess power steering fluid from the vehicle.
  7. Remove the drain pans
  8. Install the intake manifold cover. Refer to «Intake Manifold Cover Replacement»(/cadillac/srx/ii-2012-2016/remont/mechanical/#engine-mechanical-36l-lfx-repair-instructions-on-vehicle) .
  1. Remove the intake manifold cover. Refer to «Intake Manifold Cover Replacement»(/cadillac/srx/ii-2012-2016/remont/mechanical/#engine-mechanical-36l-lfx-repair-instructions-on-vehicle) .
  2. Remove the air cleaner outlet duct. Refer to «Air Cleaner Outlet Duct Replacement»(/cadillac/srx/ii-2012-2016/remont/testing-diagnostics/#engine-controlsfuel-36l-lfx-repair-instructions) .
  3. Remove as much power steering fluid from the power steering fluid reservoir as possible.
  4. Place drain pans under the vehicle.
  5. Loosen the hose clamp (1) and disconnect the power steering fluid reservoir inlet hose from the power steering fluid reservoir.
  6. Remove the right front tire and wheel assembly. Refer to «Tire and Wheel Removal and Installation»(/cadillac/srx/ii-2012-2016/remont/wheel-tire-system/#tires-and-wheels) .
  7. Remove the right front wheelhouse liner. Refer to «Front Wheelhouse Liner Replacement»(/cadillac/srx/ii-2012-2016/remont/frames-subframes-crossmembers/#frame-and-underbody) .
  8. Loosen the 2 hose clamps (1) and disconnect the power steering gear outlet and fluid reservoir inlet hoses from the power steering cooler.
  9. Disconnect the power steering gear outlet pipe (1) from the steering gear.
  10. Remove the power steering gear outlet pipe bracket fastener (2) from the power steering gear.
  11. Remove the power steering gear outlet and fluid reservoir inlet hose bracket fasteners (1).
  12. Remove the power steering gear outlet and fluid reservoir inlet hose as an assembly (2) from the vehicle.
  1. Position the power steering gear outlet and fluid reservoir inlet hose as an assembly (2) in the vehicle.
  2. Install the power steering gear outlet and fluid reservoir inlet hose bracket fasteners (1) and tighten to 9 N.m (80 lb in).
  3. Install the power steering gear outlet pipe bracket fastener (2) to the power steering gear and tighten to 9 N.m (80 lb in).
  4. Connect the power steering gear outlet pipe (1) to the steering gear and tighten the fitting to 34 N.m (25 lb ft).
  5. Connect the power steering gear outlet and fluid reservoir inlet hoses to the power steering cooler and secure with the 2 hose clamps (1).
  6. Install the right front wheelhouse liner. Refer to «Front Wheelhouse Liner Replacement»(/cadillac/srx/ii-2012-2016/remont/frames-subframes-crossmembers/#frame-and-underbody) .
  7. Install the right front tire and wheel assembly. Refer to «Tire and Wheel Removal and Installation»(/cadillac/srx/ii-2012-2016/remont/wheel-tire-system/#tires-and-wheels) .
  8. Lower the vehicle.
  9. Connect the power steering fluid reservoir inlet hose to the power steering fluid reservoir and secure with the hose clamp (1).
  10. Remove the drain pans.
  11. Install the air cleaner outlet duct. Refer to «Air Cleaner Outlet Duct Replacement»(/cadillac/srx/ii-2012-2016/remont/testing-diagnostics/#engine-controlsfuel-36l-lfx-repair-instructions) .
  12. Install the intake manifold cover. Refer to «Intake Manifold Cover Replacement»(/cadillac/srx/ii-2012-2016/remont/mechanical/#engine-mechanical-36l-lfx-repair-instructions-on-vehicle) .
  13. Fill and bleed the power steering system. Refer to «Power Steering System Bleeding»(/cadillac/srx/ii-2012-2016/remont/manual-power-steering/#power-steering-system) .
  14. Clean any excess power steering fluid from the vehicle.

Scheme 10

Scheme 10: Power Steering Gear Inlet Pipe/Hose Replacement (LHD and LF1, or LFW, or LFX)
Scheme 10: Power Steering Gear Inlet Pipe/Hose Replacement (LHD and LF1, or LFW, or LFX)
CalloutComponent Name
Preliminary Procedure Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement . Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Place drain pans under the vehicle. Remove as much power steering fluid from the power steering fluid reservoir as possible.
1Power Steering Gear Inlet Hose Fastener (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten 9 N.m (80 lb in)
2Power Steering Gear inlet Hose Procedure Install NEW power steering gear inlet hose seals. Fill and bleed the power steering system. Refer to Power Steering System Bleeding . Clean any excess power steering fluid from the vehicle. Tighten 34 N.m (25 lb ft)
CAUTION
Refer to Fastener Caution .

Power Steering Gear Inlet Pipe/Hose Replacement (LHD and LF1, or LFW, or LFX)

Scheme 11

Scheme 11: Steering Gear Pipe and Seal Replacement
Scheme 11: Steering Gear Pipe and Seal Replacement
CalloutComponent Name
Preliminary Procedure Remove the steering gear. Refer to Steering Gear Replacement .
1Steering Gear Pipe Retainer Fastener CAUTION: Refer to Fastener Caution . Tighten 12 N.m (106 lb in)
2Steering Gear Pipe Retainer
3Steering Gear Clip (Qty: 2)
4Steering Gear Pipe (Qty: 2) Procedure Install NEW steering gear pipe seals.
CAUTION
Refer to Fastener Caution .

Steering Gear Pipe and Seal Replacement

Scheme 12

Scheme 12: Steering Gear Heat Shield Replacement
Scheme 12: Steering Gear Heat Shield Replacement
CalloutComponent Name
Preliminary Procedure Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
1Fastener CAUTION: Refer to Fastener Caution . Tighten 9 N.m (80 lb in)
2Power Steering Gear Heat Shield
CAUTION
Refer to Fastener Caution .

Steering Gear Heat Shield Replacement

Scheme 13

Scheme 13: Steering Gear Replacement
Scheme 13: Steering Gear Replacement
CalloutComponent Name
CAUTION: With wheels of the vehicle facing straight ahead, secure the steering wheel utilizing steering column anti-rotation pin, steering column lock, or a strap to prevent rotation. Locking of the steering column will prevent damage and a possible malfunction of the SIR system. The steering wheel must be secured in position before disconnecting the following components: The steering column The steering shaft coupling The intermediate shaft(s) After disconnecting these components, do not rotate the steering wheel or move the front tires and wheels. Failure to follow this procedure may cause the SIR coil assembly to become un-centered and cause possible damage to the SIR coil. If you think the SIR coil has became un-centered, refer to your specific SIR coil's centering procedure to re-center SIR Coil. Preliminary Procedures With the wheels of the vehicle in the straight ahead position, lock the steering column. Disconnect the intermediate steering shaft from the steering gear. Refer to Intermediate Steering Shaft Replacement . Place drain pans under the vehicle. Remove as much power steering fluid from the reservoir as possible. Disconnect the front stabilizer shaft from the 2 stabilizer shaft links. Rotate the front stabilizer shaft as necessary for access. Refer to Stabilizer Shaft Link Replacement . Disconnect the 2 steering linkage outer tie rods from the steering knuckles. Refer to Steering Linkage Outer Tie Rod Replacement . Disconnect the power steering gear inlet hose from the steering gear. Refer to Power Steering Gear Inlet Pipe/Hose Replacement (LHD and LF1, or LFW, or LFX) . Disconnect the power steering gear outlet hose and the outlet hose bracket from the steering gear. Refer to Power Steering Gear Outlet and Fluid Reservoir Inlet Hose Replacement (LHD and LF1, or LFW, or LFX) . Perform the following steps. Refer to Drivetrain and Front Suspension Frame Replacement . Support the front frame with a jack. If equipped with all wheel drive, remove the propeller shaft. Remove the rear transmission mount through bolt. Remove the rear frame-to-body bolts. Lower the rear part of the frame a maximum of 51 mm (2 in) in order to gain clearance for the steering gear.
1Steering Gear Bolt (Qty: 2) Procedure Hold the steering gear bolt with a wrench and tighten the steering gear nut.
2Steering Gear Nut (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten 60 N.m (44 lb ft) 120 degrees
3Steering Gear Procedure If equipped with variable effort steering, disconnect the electrical connector. Fill and bleed the power steering system. Refer to Power Steering System Bleeding . Measure and adjust the front toe. Refer to Wheel Alignment - Steering Wheel Angle and/or Front Toe Adjustment .
CAUTION
With wheels of the vehicle facing straight ahead, secure the steering wheel utilizing steering column anti-rotation pin, steering column lock, or a strap to prevent rotation. Locking of the steering column will prevent damage and a possible malfunction of the SIR system. The steering wheel must be secured in position before disconnecting the following components: The steering column The steering shaft coupling The intermediate shaft(s) After disconnecting these components, do not rotate the steering wheel or move the front tires and wheels. Failure to follow this procedure may cause the SIR coil assembly to become un-centered and cause possible damage to the SIR coil. If you think the SIR coil has became un-centered, refer to your specific SIR coil's centering procedure to re-center SIR Coil.
CAUTION
Refer to Fastener Caution .

Steering Gear Replacement

Scheme 14

Scheme 14: Steering Linkage Inner Tie Rod Replacement
Scheme 14: Steering Linkage Inner Tie Rod Replacement
CalloutComponent Name
Preliminary Procedure Remove the steering gear boot. Refer to Steering Gear Boot Replacement .
1Steering Linkage Inner Tie Rod CAUTION: Refer to Fastener Caution . Procedure Place a wrench on the flats of the steering linkage inner tie rod housing. Rotate the steering linkage inner tie rod housing counterclockwise in order to remove the steering linkage inner tie rod from the rack. Rotate the steering linkage inner tie rod housing clockwise in order to install the steering linkage inner tie rod to the rack. Tighten 70 N.m (52 lb ft)
CAUTION
Refer to Fastener Caution .

Steering Linkage Inner Tie Rod Replacement

  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/srx/ii-2012-2016/remont/hoistjack/#general-information) .
  2. Place drain pans under the vehicle.
  3. Disconnect the electrical connector (1) from the steering gear valve solenoid (3).
  4. Remove the 2 steering gear valve solenoid bolts (2, 4).
  5. Remove the steering gear valve solenoid from the steering gear.
  1. Install the steering gear valve solenoid (3) to the steering gear.
  2. Install the lower steering gear valve solenoid bolt (4) to the lower bolt hole and tighten to 0.5 N.m (4.4 lb in).
  3. Install the upper steering gear valve solenoid bolt (2) to the upper bolt hole and tighten to 1.5 N.m (13.3 lb in).
  4. Tighten the lower steering gear valve solenoid bolt to 2.9 N.m (25.7 lb in).
  5. Tighten the upper steering gear valve solenoid bolt to 2.9 N.m (25.7 lb in).
  6. Connect the electrical connector (1) to the steering gear valve solenoid.
  7. Lower the vehicle.
  8. Fill and bleed the power steering system. Refer to «Power Steering System Bleeding»(/cadillac/srx/ii-2012-2016/remont/manual-power-steering/#power-steering-system) .
  9. Clean any excess power steering fluid from the vehicle.
  10. Remove the drain pans.

The hydraulic power steering pump is a constant displacement vane-type pump that provides hydraulic pressure and flow for the power steering gear. The hydraulic power steering pumps are either belt-driven or direct-drive, cam-driven.

The power steering fluid reservoir holds the power steering fluid and may be integral with the power steering pump or remotely located. The following locations are typical locations for the remote reservoir

  1. Mounted to the front of the dash panel
  2. Mounted to the inner fender
  3. Mounted to a bracket on the engine

The 2 basic types of power steering gears are listed below

  1. A recirculating ball system
  2. A rack and pinion system

In the recirculating ball system, a worm gear converts steering wheel movement to movement of a sector shaft. A pitman arm attached to the bottom of the sector shaft actually moves one tie rod while an intermediate rod moves the other tie rod.

In the rack and pinion system, the rack and the pinion are the 2 components that convert steering wheel rotation to lateral movement. The steering shaft is attached to the pinion in the steering gear. The pinion rotates with the steering wheel. Gear teeth on the pinion mesh with the gear teeth on the rack. The rotating pinion moves the rack from side to side. The lateral action of the rack pushes and pulls the tie rods in order to change the direction of the vehicle's front wheels.

The power steering pressure hose connects the power steering pump union fitting to the power steering gear and allows pressurized power steering fluid to flow from the pump to the gear.

The power steering return hose returns fluid from the power steering gear back to the power steering fluid reservoir. The power steering return line may contain an integral fin-type or line-type power steering fluid cooler.

In a typical power steering system, a pump generates hydraulic pressure, causing fluid to flow, via the pressure hose, to the steering gear valve assembly. The steering gear valve assembly regulates the incoming fluid to the right and left chambers in order to assist in right and left turns.

Turning the steering wheel activates the valve assembly, which applies greater fluid pressure and flow to one side of the steering gear piston, and lower pressure and flow to the other side of the piston. The pressure assists the movement of the gear piston. Tie rods transfer this force to the front wheels, which turn the vehicle right or left.

Variable Effort Steering System Description and Operation

The variable effort steering system varies the amount of effort to steer the vehicle as wheel speed changes or lateral acceleration occurs. The electronic brake control module (EBCM) controls an actuator located in the steering rack and pinion. The actuator consists of an electromagnetic coil and a normally open pintle valve. The valve regulates an orifice that bleeds inlet pressure through a return passage to regulate the amount of pressure available for steering assist. The EBCM commands current from 0-1 A to the variable effort steering actuator which varies the amount of effort required to steer the vehicle. At high speeds, 1 A of current is commanded to the variable effort steering actuator and the pintle valve is fully closed which provides minimum pressure for a firm steering feel and directional stability. The variable effort steering system uses the steering wheel position sensor input to calculate lateral acceleration during abrupt driving maneuvers. The system also uses the antilock brake system (ABS) wheel speed sensor inputs to determine vehicle speed. The EBCM is constantly monitoring these inputs to achieve the desired current to the variable effort steering actuator. The EBCM has the ability to detect malfunctions in the variable effort steering actuator or the circuits to the actuator. Any malfunctions detected will cause the variable effort steering outputs to be disabled, and the actuator will return to an open state. The EBCM will command the driver information center to display the SERVICE STEERING SYSTEM warning message via a serial data circuit.

Illustration Tool Number/ Description CH-22610 J-22610 KM-J-22610 SA9164C Keystone Clamp Pliers CH-24319-B J-24319-B SA91100C 7503 Steering Linkage and Tie Rod Puller CH-25033-C J-25033-C KM-J-25033-C 8996415 Pulley Installer CH-25034-C J-25034-C KM-J-25034-C 8996423 Pulley Remover CH-39570 J-39570 Chassis Ear CH-44721 J-44721 Power Steering Analyzer GE-8001 J-8001 Dial Indicator Set GE-28431-6 J-28431-6 Fluorescent Dye

Scheme 15

Scheme 15: Special Tools
Scheme 15: Special Tools

Scheme 16

Scheme 16
Scheme 16

Scheme 17

Scheme 17
Scheme 17

Scheme 18

Scheme 18
Scheme 18

See also:
• Diagnostic System Check - Vehicle
• Strategy Based Diagnosis
• Diagnostic Procedure Instructions
• COMPONENT CONNECTOR END VIEWS - INDEX
• Circuit Testing
• Connector Repairs
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs
• Control Module References
• Diagnostic Repair Verification
• Drive Belt Falls Off and Excessive Wear Diagnosis
• Noise Diagnosis - Front Suspension
• Drive Belt Replacement
• Intermediate Steering Shaft Replacement
• Lifting and Jacking the Vehicle
• Tire and Wheel Removal and Installation
• Wheel Alignment Measurement
• Fastener Caution
• Wheel Alignment - Steering Wheel Angle and/or Front Toe Adjustment
• Front Wheelhouse Liner Replacement
• Front Bumper Fascia Replacement
• Air Cleaner Outlet Duct Replacement
• Stabilizer Shaft Link Replacement
• DTC C0450
• Variable Effort Steering System Description and Operation
• Power Steering Fluid Leaks
• Steering Effort Too Easy in One or Both Directions
• Checking and Adding Power Steering Fluid
• Power Steering Pump Specifications
• Steering Linkage Inner Tie Rod Inspection
• Steering Linkage Outer Tie Rod Inspection
• Adhesives, Fluids, Lubricants, and Sealers