Rear Air Springs Do Not Deflate
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.
Rear Air Springs Do Not Deflate
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Suspension Controls Schematics | |||
| 1 | Did you review the Air Suspension operation and perform the necessary inspections? | Go to Step 2 | Go to Air Suspension Description and Operation |
| 2 |
IMPORTANT:
The vehicle must be on a drive on hoist.
|
Go to Step 3 | Go to Step 6 |
| 3 | Connect a test lamp between the ground circuit of the Air Suspension Compressor Assembly harness and a battery positive voltage circuit. Does the test lamp illuminate? |
Go to Step 4 | Go to Step 7 |
| 4 | Disconnect both air spring supply tubes at the Air Suspension Compressor Assembly. Did the vehicle lower? |
Go to Step 5 | Go to Step 8 |
| 5 | Replace the Air Suspension Compressor Assembly. Refer to Air Spring Compressor Replacement . Did you complete the replacement? |
Go to Step 10 | - |
| 6 | Repair open circuit on the Air Suspension Compressor Assembly battery positive circuit. Did you complete the repair? |
Go to Step 10 | - |
| 7 | Repair open circuit on the Air Suspension Compressor Assembly ground circuit. Did you complete the repair? |
Go to Step 10 | - |
| 8 | Carefully inspect air tube assemble for damage. Was any damage found? |
Go to Step 9 | - |
| 9 | Repair or replace any damaged components. Is the repair complete? |
Go to Step 10 | - |
| 10 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Diagnostic System Check - Air Suspension |