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.
General Motors
System operates on 12 volts with a current draw of approximately 20 amps with the glass at 75° F. Under certain ambient temperature conditions, it is possible that heat from the glass may not be detected by finger touch.
The system is actuated by an instrument panel mounted switch with an integral indicator lamp. Once the switch has been activated, the system operates continuously until the control switch or ignition switch is turned off. Vehicles equipped with A/C and the heated back glass system use a relay to regulate the A/C blower motor speed when the heated back glass system is in operation.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.