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.
2002 Chevrolet Impala LSFACTORY OEM SERVICE PROCEDURE
Grid Filament Repair
- To repair grid, turn system off and remove REAR DEFOG circuit breaker (30-amp) from right instrument panel junction block, located behind right end of instrument panel. Gently clean area to be repaired with fine steel wool. Wipe area clean with isopropyl alcohol. Ensure area is cleaned 1/4" (6 mm) beyond each side of break.
- With glass at room temperature of 70-90°F (20-32°C), position masking tape along both sides of grid line at damaged area. See Fig 1 . Apply grid repair material to grid and carefully remove masking tape. Holding heat gun 1" (25 mm) from repair area, apply heat at a minimum of 300°F (149°C) for 2-3 minutes. If heat gun is not available, allow repair area to air dry for at least 24 hours.
- Test defogger operation to verify repair. If repair appears discolored, apply a coating of tincture of iodine. Allow iodine to dry for 30 seconds and carefully wipe off excess using lint-free cloth.
Factory Service Tools
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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.
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