SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA RWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 379 (ENGINE CONTROLS SELF-DIAGNOSTICS)DRIVE CYCLESINSPECTION/MAINTENANCE EXHAUST GAS RECIRCULATION SYSTEM SET PROCEDUREDIAGNOSTIC PROCEDURES
2004 Oldsmobile Bravada RWD

Diagnostic Procedures

2004 Oldsmobile Bravada RWDSECTION Diagnostic Procedures
WARNING: This page is about a different car, the 2003 Pontiac Aztek and 2003 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
  1. Did you perform the Inspection/Maintenance (I/M) System Check? If yes, go to next step. If no, see INSPECTION/MAINTENANCE SYSTEM CHECK .
    2. WARNING: 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.
  2. Ensure the vehicle is within the Conditions for Running. See CONDITIONS FOR RUNNING . Turn OFF all of the accessories (e.g., A/C, blower fan, etc.). Start engine and allow to idle. For this test to run, the vehicle must operate in the following conditions:
    • Accelerate at part throttle to 45 MPH with this speed maintained for one minute.
    • Four decelerations of 25 seconds each from 45 MPH while the following criteria is maintained:
      1. Throttle is closed.
      2. NO brake application on either manual or automatic transmission.
      3. NO manual downshift.
      4. The vehicle speed remains above 25 MPH.
      5. After each deceleration period, vehicle is returned to 45 MPH under part throttle acceleration and speed is maintained for 15 seconds.
    • With a scan tool, observe the I/M System Status display.

    Did the EGR System Status update to YES? If yes, go to step  5. If no, go to next step.

  3. With a scan tool, observe the DTC Information. Does the scan tool indicate any failed DTCs? If yes, see DIAGNOSTIC TROUBLE CODE DEFINITIONS . If no, go to next step.
  4. To determine which DTCs are required to run in order to complete this test, see INSPECTION/MAINTENANCE SYSTEM DTC TABLE . With scan tool, observe the Not Ran Since Code Cleared display. 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 DTC. See CONDITIONS FOR RUNNING . Repeat the procedure until the scan tool indicates the diagnostic test has run. Repeat procedure for any additional required DTCs that have not run. With a scan tool, observe the I/M System Status display. Did the EGR System Status update to YES? If yes, go to next step. If no, see DIAGNOSTIC AIDS .
  5. With 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.
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.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

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.