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 MANUALSCHEVROLET2006SUBURBAN C1500, 5.3 ZREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 679 (ENGINE CONTROLS - 8.1L - INTRODUCTION (2 OF 2))REPAIR INSTRUCTIONSTHROTTLE ACTUATOR CONTROL (TAC) MODULE REPLACEMENTREMOVAL PROCEDURE

2006 Chevrolet Suburban C1500, 5.3 Z

Removal Procedure

2006 Chevrolet Suburban C1500, 5.3 ZSECTION Removal Procedure

WARNING: This page is about a different car, the 2006 GMC Sierra, 2006 GMC Cab & Chassis Sierra, 2006 Chevrolet Silverado, and 2006 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Remove the connector position assurance (CPA) retainer (1).

Fig 1: I/P Wiring Harness Electrical Connector
Courtesy of GENERAL MOTORS CORP.
Disconnect the instrument panel (I/P) harness electrical connector (2).
Disconnect the engine wiring harness electrical connector (1).

Fig 2: View Of TAC Module Electrical Connector
Courtesy of GENERAL MOTORS CORP.
Remove the throttle actuator control (TAC) module nuts.

Fig 3: Throttle Actuator Control (TAC) Module Nuts
Courtesy of GENERAL MOTORS CORP.
Remove the TAC module.
If equipped with a regular production option (RPO) ML6 manual transmission, unsnap the TAC module from the bracket.

Fig 4: TAC Module And Bracket - RPO ML6 Manual Transmission
Courtesy of GENERAL MOTORS CORP.
If equipped with a RPO ML6 manual transmission, remove the TAC module bracket nuts.

Fig 5: TAC Module Bracket - RPO ML6 Manual Transmission
Courtesy of GENERAL MOTORS CORP.
Remove the TAC module bracket, if necessary.

RENDER: 1.0x

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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.