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 439 (BATTERY)REPAIR INSTRUCTIONSBATTERY REPLACEMENTREMOVAL PROCEDURE
1999 GMC Forward Control 5.7 R, Automatic
Removal Procedure
1999 GMC Forward Control 5.7 R, AutomaticSECTION Removal Procedure
WARNING: This page is about a different car, the 2002 GMC Savana Special, 2002 GMC Savana Camper Special, 2002 GMC Savana, and 2002 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect the battery negative cable from the negative battery terminal. Refer to Battery Negative Cable Disconnect/Connect Procedure .
- Disconnect the battery positive cable from the positive battery terminal. Refer to Battery Positive Cable Replacement .
- Remove the battery hold-down retainer bolt and retainer.
- Remove the battery from the vehicle.
- Inspect the battery for:
- Damage
- Worn or corroded cables and connectors
- Damage or foreign objects in the battery carrier
- If damage is noted, find and correct the cause.
- Clean any corrosion form the battery cables and connectors.
- Clean the battery tray and remove any foreign objects from the tray.
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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.