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 AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 397 (ENGINE CONTROLS SELF-DIAGNOSTICS - 3.4L)DRIVE CYCLESINSPECTION/MAINTENANCE HEATED OXYGEN SENSOR/OXYGEN SENSOR SYSTEM SET PROCEDUREDIAGNOSTIC PROCEDURE
2004 Oldsmobile Bravada AWD
Diagnostic Procedure
2004 Oldsmobile Bravada AWDSECTION Diagnostic Procedure
WARNING: This page is about a different car, the 2003 Pontiac Grand Am, 2003 Oldsmobile Alero, 2003 Chevrolet Monte Carlo, and 2003 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
- Perform I/M system check. See INSPECTION/MAINTENANCE SYSTEM CHECK . After performing I/M system check, go to next step.
- Ensure the vehicle is within the Conditions For Running. See CONDITIONS FOR RUNNING . Turn all of the accessories OFF, e.g., A/C, blower fan, etc. Start the engine and allow to idle. In order for this test to run, the vehicle must operate in the following conditions:
- Accelerate at part throttle to 45-55 MPH with this speed maintained for 6 minutes or until the I/M System Status updates to YES. Manual transmissions, either 5 or 6 speed, may require operation in 4th or 5th gear respectively, in order for this test to run.
Using scan tool, review the I/M System Status display. Did the HO2S/O2S System Status update to YES? If yes, go to step 5. If no, go to next step.
- Using scan tool, observe DTC information. If scan tool indicates any failed DTCs, go to DIAGNOSTIC TROUBLE CODE DEFINITIONS . If scan tool does not indicate any failed DTCs, go to next step.
- Determine which DTCs are required to run in order to complete this test. See INSPECTION/MAINTENANCE SYSTEM DTCS . Using a scan tool, observe the NOT RAN SINCE CODE CLEARED display. Determine which of the DTCs required for a YES status has not run. Enter DTC number in the Specific DTC menu of scan tool. Operate vehicle within the Conditions For Running. See CONDITIONS FOR RUNNING . Repeat the procedure until scan tool indicates the diagnostic test has run. Repeat this step for any additional required DTCs that have not run. Using scan tool, observe the I/M System Status display. Did the HO2S/O2S System Status update to YES? If yes, go to next step. If no, see DIAGNOSTIC AIDS .
- Using a scan tool, observe the Emission Related DTC portion of the I/M System Status display. Does the scan tool indicate any emission related DTCs set? If yes, see DIAGNOSTIC TROUBLE CODE DEFINITIONS . If no, system is okay at this time.
WARNING:
Road test vehicle under safe conditions and while obeying all traffic laws. Do not attempt any maneuvers that could jeopardize vehicle control. Failure to adhere to these precautions could lead to serious personal injury and vehicle damage.
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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.