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 Procedure
2004 Oldsmobile Bravada AWDSECTION Diagnostic Procedure
WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Did you perform the Inspection/Maintenance (I/M) System Check? If YES, go to next step. If NO, see INSPECTION/MAINTENANCE SYSTEM CHECK .
- Ensure the vehicle is within the Conditions for Running specified in the supporting text. Turn OFF all of the accessories, e.g., A/C, blower fan, etc. Start the engine, and allow the engine to idle for 2 minutes. In order for this test to run, the vehicle must operate in the following conditions:
- Acceleration at part throttle to 50 mph (80 km/h) with this speed maintained until the engine reaches operating temperature. This may be up to 10 minutes depending on the start up coolant temperature.
- Continue the operating conditions for an additional 3 minutes after the engine reaches operating temperature.
- After the specified time has elapsed, vehicle requires acceleration at 75 percent throttle until a speed of 68 mph (110 km/h) is attained.
- Review the I/M System Status display with a scan tool.
- Observe the DTC Information with a scan tool. Does the scan tool indicate any failed DTCs? If YES, go to DIAGNOSTIC TROUBLE CODE DEFINITIONS . In NO, go to next step.
- Refer to INSPECTION/MAINTENANCE SYSTEM DTCS to determine which DTCs are required to run in order to complete this test. Observe the Not Ran Since Code Cleared parameter with a scan tool. Determine which of the DTCs required for a YES status has not run. Enter the DTC number in the Specific DTC menu of the scan tool. Operate the vehicle within the Conditions for Running the DTC, located in the supporting text for the diagnostic table of the DTC. Repeat the procedure until the scan tool indicates the diagnostic test has run. Repeat steps 4-6 for any additional required DTCs that have not run. Observe the I/M System Status with a scan tool. Did the Component Monitoring System Status update to YES? If YES, go to next step. If NO, see Diagnostic Aids .
- Observe the Emission Related DTC portion of the I/M System Status with a scan tool. Does the scan tool indicate any Emission Related DTCs set? If YES, see DIAGNOSTIC TROUBLE CODE DEFINITIONS . If NO, the system is okay.
CAUTION:
Road test a 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.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.