Test Description

2004 Oldsmobile Bravada AWDSECTION Test Description
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers on the diagnostic table.

  1. 1:  The presence of DTCs
  2. 4:  The symptom list in Symptoms will determine the correct diagnostic procedure to use.
Diagnostic System Check - Automatic Level Control (With Inflator)

Step Action Yes No
Schematic Reference: Automatic Level Control Suspension Schematics 
Turn ON the ignition, with the engine OFF.
Press the accessory inflator switch for 3 seconds to enter diagnostic mode.
After 200 seconds does the LED flash code 12?
Go to Step 2  Go to Step 4 
2 Press and release the accessory inflator switch.
Does the LED in the Switch stop flashing?
Go to Step 3  -
3 Cycle the ignition switch from ON to OFF.
Did you complete the procedure?
System OK -
Does the LED in the accessory inflator switch flash other codes? Go to Diagnostic Trouble Code (DTC) List  Go to Symptoms - Automatic Level Control 
RENDER: 1.0x

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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.