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 MANUALSCHEVROLET2015SILVERADO 1500 HIGH COUNTRY, 5.3L ENG VIN C, RWD, GASREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 541 (ENGINE CONTROLS (INTRODUCTION) -- 5.7L)REPAIR INSTRUCTIONSPOWERTRAIN CONTROL MODULE (PCM) REPLACEMENTINSTALLATION PROCEDURE

2015 Chevrolet Silverado 1500 High Country, 5.3L Eng VIN C, RWD, Gas

Installation Procedure

2015 Chevrolet Silverado 1500 High Country, 5.3L Eng VIN C, RWD, GasSECTION Installation Procedure

WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: PCM & Mounting Bracket

Courtesy of GENERAL MOTORS CORP.

Install the PCM to the PCM rear bracket.
Position the PCM front bracket.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Install the PCM front retaining fasteners.
Tighten: Tighten the PCM retaining fasteners to 2.0 N.m (17 lb in).

Fig 2: PCM Electrical Harness Connectors

Courtesy of GENERAL MOTORS CORP.

Connect the electrical connectors to the PCM.
Tighten: Tighten the PCM electrical connectors to 8 N.m (70 lb in).
Install the TAC module. Refer to Throttle Actuator Control (TAC) Module Replacement .
Install the wheelhouse filler panel. Refer to Wheelhouse Filler Replacement in Body Front End.
If a new PCM is being installed, program the PCM. Refer to Service Programming System (SPS) in Programming.

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.