Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2003AVALANCHE 1500 2WD V8-5.3L VIN TREPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - BODY AND FRAMEPOWER SEAT CONTROL MODULESERVICE AND REPAIR
2003 Chevrolet Avalanche 1500 2WD V8-5.3L VIN T
Power Seat Control Module: Service and Repair
2003 Chevrolet Avalanche 1500 2WD V8-5.3L VIN TSECTION Service and Repair
MEMORY SEAT CONTROL MODULE REPLACEMENT
REMOVAL PROCEDURE
1. Remove the seat cushion.
2. Disconnect the upper electrical harness connectors (3).
3. Remove the module (2) retaining screws (1).
4. Slide the module to the right to disengage the lower retainers.
5. Disconnect the lower electrical harness connectors (2).
6. Remove the module from the vehicle.
INSTALLATION PROCEDURE
1. Position the module into the vehicle.
2. Connect the lower electrical harness connectors (2).
3. Slide the module (2) to the left to engage the lower retainers.
4. Install the module retaining screws (3).
NOTE: Refer to Fastener Notice in Service Precautions.
Tighten
Tighten the screws to 3 N.m (26 lb in).
5. Connect the upper electrical harness connectors (3).
6. Install the seat cushion.
7. If a new memory seat module was installed, the seat needs to synchronized:
7.1. Operate the seat in all directions:
- Front tilt
- Rear tilt
- Horizontal
- Recline
7.2. If the seat stops part way due to programmed soft stop, release the switch and operate again in the same direction till the seat touches the mechanical stop.
7.3. Repeat the above for all seat positions.
REMOVAL PROCEDURE
1. Remove the seat cushion.
2. Disconnect the upper electrical harness connectors (3).
3. Remove the module (2) retaining screws (1).
4. Slide the module to the right to disengage the lower retainers.
5. Disconnect the lower electrical harness connectors (2).
6. Remove the module from the vehicle.
INSTALLATION PROCEDURE
1. Position the module into the vehicle.
2. Connect the lower electrical harness connectors (2).
3. Slide the module (2) to the left to engage the lower retainers.
4. Install the module retaining screws (3).
NOTE: Refer to Fastener Notice in Service Precautions.
Tighten
Tighten the screws to 3 N.m (26 lb in).
5. Connect the upper electrical harness connectors (3).
6. Install the seat cushion.
7. If a new memory seat module was installed, the seat needs to synchronized:
7.1. Operate the seat in all directions:
- Front tilt
- Rear tilt
- Horizontal
- Recline
7.2. If the seat stops part way due to programmed soft stop, release the switch and operate again in the same direction till the seat touches the mechanical stop.
7.3. Repeat the above for all seat positions.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.