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 MANUALSOLDSMOBILE2004BRAVADA RWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 109 (ENGINE CONTROL SYSTEM SELF-DIAGNOSTICS - 3.4L)SYSTEM TESTSMIL ON STEADYDIAGNOSTIC PROCEDURES
2004 Oldsmobile Bravada RWD
Diagnostic Procedures
2004 Oldsmobile Bravada RWDSECTION Diagnostic Procedures
WARNING: This page is about a different car, the 2002 Pontiac Grand Am, 2002 Oldsmobile Alero, 2002 Chevrolet Monte Carlo, and 2002 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
- Did you perform the Diagnostic System Check - Engine Controls? If yes, go to next step. If no, see DIAGNOSTIC SYSTEM CHECK - ENGINE CONTROLS under SELF-DIAGNOSTIC SYSTEM.
- With a scan tool observe the DTCs. Are any DTCs set? If yes, go to DIAGNOSTIC TROUBLE CODE DEFINITIONS . If yes, go to next step.
- Turn ignition off. Observe the MIL on the Instrument Panel (IP) cluster. Is MIL ON? If yes, go to step 7. If no, go to next step.
- Install a scan tool. Command MIL ON and OFF several times while monitoring the IP cluster. Does the MIL turn ON and OFF when commanded? If yes, see DIAGNOSTIC AIDS . If no, go to step 6.
- Repair MIL control circuit for a short to ground. After repairs, go to step 7.
- Repair MIL control circuit for a short to voltage. After repairs, go to next step.
- Install a scan tool. Command MIL ON and OFF several times while monitoring the IP cluster. Does the MIL turn OFF when commanded? If yes, go to DIAGNOSTIC SYSTEM CHECK - ENGINE CONTROLS under SELF-DIAGNOSTIC SYSTEM. If no, go to step 2.
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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.