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 MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 355 (WIRING SYSTEMS - INTRODUCTION)REPAIR INSTRUCTIONSBODY WIRING HARNESS JUNCTION BLOCK REPLACEMENTINSTALLATION PROCEDURE

2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6

Installation Procedure

2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Install the wire harness block to the junction block.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Install the retaining bolts.
Tighten: Tighten the bolts to 6 N.m (53 lb in).
Install the junction block to the bracket.
Push on the top part until it clicks in place.

Fig 1: Installing Junction Block

Courtesy of GENERAL MOTORS CORP.

Connect the harness to the front of the junction block.
Install the cover to the junction block until it clicks in place.

Fig 2: Installing Junction Block Harness

Courtesy of GENERAL MOTORS CORP.

Hand tighten the retaining nut until seated.

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.