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.
2005 Chevrolet Tahoe 2WD V8-4.8L VIN VFACTORY OEM SERVICE PROCEDURE
Electronic Throttle Control Module: Service and Repair
THROTTLE ACTUATOR CONTROL (TAC) MODULE REPLACEMENT
REMOVAL PROCEDURE
1. Disconnect the instrument panel (I/P) harness electrical connector (2).
2. Release the red connector position assurance (CPA) retainer.
3. Disconnect the engine wiring harness electrical connector (1).
4. Remove the throttle actuator control (TAC) module nuts.
5. Remove the TAC module.
INSTALLATION PROCEDURE
1. Install the TAC module.
NOTE: Refer to Fastener Notice in Service Precautions.
2. Install the TAC module nuts.
Tighten the nuts to 9 N.m (80 lb in).
3. Connect the engine wiring harness electrical connector (1).
4. Install the red CPA retainer.
5. Connect the I/P harness electrical connector (2).
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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