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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSGMC2001SAVANA G3500, VAN CARGO EXTENDED, 5.7 R, L31REPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTHEATED GLASS/DEFOGGERSREAR WINDOW DEFOGGER & MIRROR DEFOGGERSYSTEM TESTSNOTES
2001 GMC Savana G3500, Van Cargo Extended, 5.7 R, L31
System Tests: Notes
2001 GMC Savana G3500, Van Cargo Extended, 5.7 R, L31SECTION Notes
NOTE:
Before testing, perform PRELIMINARY INSPECTION
under TROUBLE SHOOTING. Leave electrical connectors attached and backprobe terminals unless specified otherwise. For identification of connectors and terminals, see appropriate wiring diagram. See WIRING DIAGRAMS
.
SYMPTOM INDEX
| Symptom | Perform Test |
|---|---|
| Rear Window Defogger Indicator Always On (Astro & Safari) | A |
| Rear Window Defogger Indicator Always On (Chevy Express & Savana) | B |
| Rear Window Defogger Inoperative (Astro & Safari) | C |
| Rear Window Defogger Inoperative (Chevy Express & Savana) | D |
| Heated Mirrors Inoperative (Chevy Express & Savana) | E |
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.