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HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA RWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 108 (ENGINE CONTROL SYSTEM SELF-DIAGNOSTICS - 3.8L)INSPECTION/MAINTENANCE PROCEDURESINSPECTION/MAINTENANCE HEATED OXYGEN SENSOR/OXYGEN SENSOR SYSTEM SET PROCEDURETEST DESCRIPTION
2004 Oldsmobile Bravada RWD

Test Description

2004 Oldsmobile Bravada RWDSECTION Test Description
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 Pontiac Grand Prix, 2002 Pontiac Bonneville, 2002 Chevrolet Monte Carlo, 2002 Chevrolet Impala, and 2002 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers in the diagnostic procedures.

  1. 1

    Ensure you perform the I/M System Check before performing this test. See INSPECTION/MAINTENANCE SYSTEM CHECK . Failure to do so may result in difficulty updating the status to YES.

  2. 2

    The oxygen sensor tests begin shortly after the indicated speed is achieved. The engine RPM may be too low in Overdrive on manual transmission vehicles. If difficulty is encountered updating the status, operate the vehicle in the recommended gear during the test.

  3. 3

    This step is to identify a first failure of a type "B" DTC. A DTC only appears on the I/M SYSTEM STATUS display when the DTC becomes a Malfunction Indicator Lamp (MIL) illuminating DTC. This occurs on the second failure of a type "B" DTC. A first failure of a type "B" DTC will not allow the I/M SYSTEM STATUS to update to YES. See DIAGNOSTIC AIDS .

  4. 4

    This step is to help identify any unique or unusual criteria required to run the diagnostic test in the event the universal set procedure does not. See Conditions for Running DTC.

  5. 5

    The I/M System Status only reports on whether or not a diagnostic has run, not what the outcome of the test was. If any Emission Related DTC sets after the tests are complete, the DTC will require diagnosis.
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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.