Test Description
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
The number(s) below refer to the step number(s) on the diagnostic table.
- 1: The presence of DTCs
- 6: The symptom list in Symptoms will determine the correct diagnostic procedure to use.
Diagnostic System Check - Air Suspension
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Suspension Controls Schematics | |||
| 1 | Turn ON the ignition, with the engine OFF. Does the LED in the inflator switch flash? |
Go to Step 4 | Go to Step 2 |
| 2 | Press and release the inflator ON/OFF switch. Does the LED in the Switch illuminate and the compressor start to run? |
Go to Step 3 | Go to Inflator Inoperative |
| 3 | Press and release the inflator ON/OFF switch. Does the LED in the switch flash? |
Go to Step 4 | System OK |
| 4 | Does the LED in the switch flash DTC 1? | Go to DTC 001 | Go to Step 5 |
| 5 | Does the LED in the switch flash DTC 2? | Go to DTC 002 | Go to Step 6 |
| 6 | Does the LED in the switch flash DTC 3? | Go to DTC 003 | Go to Symptoms - Air Suspension |