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 MANUALSBUICK2004RAINIER AWD V8-5.3L VIN PREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSELECTRONIC THROTTLE CONTROL MODULESERVICE AND REPAIR
2004 Buick Rainier AWD V8-5.3L VIN P
Electronic Throttle Control Module: Service and Repair
2004 Buick Rainier AWD V8-5.3L VIN PSECTION Service and Repair
THROTTLE ACTUATOR CONTROL (TAC) MODULE REPLACEMENT
REMOVAL PROCEDURE
NOTE: Refer to Handling ESD Sensitive Parts Notice in Service Precautions.
1. Remove the bulk connector from the bracket insert a small flat-bladed tool to disengage the clip.
2. Disconnect the instrument panel (I/P) harness electrical connector.
3. Disconnect the engine harness electrical connector.
4. Release the retaining tab on the side of the throttle actuator control (TAC) module (3).
5. Remove the TAC module (3) from the retaining bracket (1).
6. If necessary, remove the TAC module bracket nuts (2) and bracket (1).
INSTALLATION PROCEDURE
NOTE:
- Refer to Handling ESD Sensitive Parts Notice in Service Precautions.
- Refer to Fastener Notice in Service Precautions.
1. If necessary, install the TAC module bracket (1) and nuts (2).
Tighten
Tighten the nuts to 9 N.m (80 lb in).
2. Install the TAC module (3) to the retaining bracket (1).
3. Snap the TAC module (3) into retaining tab.
4. Connect the engine harness electrical connector.
5. Connect the I/P harness electrical connector.
6. Install the bulk connector to the bracket.
REMOVAL PROCEDURE
NOTE: Refer to Handling ESD Sensitive Parts Notice in Service Precautions.
1. Remove the bulk connector from the bracket insert a small flat-bladed tool to disengage the clip.
2. Disconnect the instrument panel (I/P) harness electrical connector.
3. Disconnect the engine harness electrical connector.
4. Release the retaining tab on the side of the throttle actuator control (TAC) module (3).
5. Remove the TAC module (3) from the retaining bracket (1).
6. If necessary, remove the TAC module bracket nuts (2) and bracket (1).
INSTALLATION PROCEDURE
NOTE:
- Refer to Handling ESD Sensitive Parts Notice in Service Precautions.
- Refer to Fastener Notice in Service Precautions.
1. If necessary, install the TAC module bracket (1) and nuts (2).
Tighten
Tighten the nuts to 9 N.m (80 lb in).
2. Install the TAC module (3) to the retaining bracket (1).
3. Snap the TAC module (3) into retaining tab.
4. Connect the engine harness electrical connector.
5. Connect the I/P harness electrical connector.
6. Install the bulk connector to the bracket.
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.