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.
Diagnostic Aids
The following conditions may cause an intermittent:
- Intermittent short to ground or open in Dark Blue wire between BCM and back-up light relay.
- Poor connections at BCM, underhood electrical center, or back-up light relay.
- Internal open or short in back-up light relay.
If Dark Blue wire between BCM and back-up light relay is shorted to ground, back-up lights will stay on at all times. If Dark Blue wire between BCM and back-up light relay is open, back-up lights will stay off at all times.
NO RELATED
Use the Manual With the Right Hardware
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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.