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 MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 632 (BATTERY)REPAIR INSTRUCTIONSBATTERY POSITIVE CABLE REPLACEMENTINSTALLATION PROCEDURE

1999 GMC Forward Control 5.7 R, Automatic

Installation Procedure

1999 GMC Forward Control 5.7 R, AutomaticSECTION Installation Procedure

WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

Install the positive battery cable.
Raise the vehicle.
NOTE: Refer to FASTENER NOTICE in Cautions and Notices.

Important: Ensure that the engine harness leads (3, 4) are positioned on the solenoid prior to the positive cable terminal being installed.
Install the positive battery cable terminals (3, 4) and nut to the starter solenoid.
Tighten

Tighten the positive battery cable nut to 8 N.m (71 lb in).

Fig 1: Battery Positive Cable
Courtesy of GENERAL MOTORS CORP.
Install the battery cables (1) to the engine wiring harness insulator.

Fig 2: Installing Battery Cables To Engine Wiring Harness Insulator
Courtesy of GENERAL MOTORS CORP.
Install the battery cable clips.
Install the right rear spark plug wire.

Fig 3: Battery Cable Clips
Courtesy of GENERAL MOTORS CORP.

Important: Ensure that two fingers of the heat shield bracket are on either side of the heat shield, and the shield is inserted into the notch in the insulator.
Install the battery heat shield.
Install the heat shield retainer at the wheelhouse panel.

Fig 4: Installing Heat Shield Retainer To Wheelhouse Panel
Courtesy of GENERAL MOTORS CORP.
Install the heat shield retainer at the upper plenum.

Fig 5: Installing Heat Shield Retainer To Upper Plenum
Courtesy of GENERAL MOTORS CORP.
Install the positive battery cable lead (2) to the fuse/relay center stud.
Install the positive battery cable nut to the fuse/relay center stud.
Tighten

Tighten the positive battery cable nut to 10 N.m (89 lb in).
Close the stud cover on the fuse/relay center.
Install the battery tray. Refer to BATTERY TRAY REPLACEMENT Battery Tray Replacement.

Fig 6: Installing Positive Battery Cable Lead To Fuse/Relay Center Stud
Courtesy of GENERAL MOTORS CORP.

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.