Test Description
WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
The number below refers to the step number on the diagnostic table.
- 2: Lack of communication may be due to a partial malfunction of the class 2 serial data circuit or due to a total malfunction of the class 2 serial data circuit. The specified procedure will determine the particular condition.
Diagnostic System Check - Cruise Control
| Step | Action | Yes | No |
|---|---|---|---|
| 1 | Install a scan tool. Does the scan tool power up? |
Go to Step 2 | Go to SCAN TOOL DOES NOT POWER UP in Data Link Communications |
| 2 |
|
Go to Step 3 | Go to SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 Device (W/O Immobilizer) in Data Link Communications |
| 3 | Select the BCM and PCM display DTCs function on the scan tool. Does the scan tool display any DTCs? |
Go to Step 4 | Go to Symptoms - Cruise Control |
| 4 | Does the scan tool display any DTCs which begin with a "U"? | Go to SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 Device (W/O Immobilizer) in Data Link Communications | Go to Step 5 |
| 5 | Does the scan tool display DTC B1000? | Go to DIAGNOSTIC TROUBLE CODE (DTC) LIST in Body Control System | Go to Step 6 |
| 6 | Does the scan tool display any DTCs that begin with a C? | Go to DIAGNOSTIC TROUBLE CODE (DTC) LIST in Antilock Brake System | Go to Step 7 |
| 7 | Does the scan tool display DTC P0567, P0568, P0571, P0704? | Go to Diagnostic Trouble Code (DTC) List | Go to Step 8 |
| 8 | Does the scan tool display any DTCs which begin with a "P"? | Go to DIAGNOSTIC TROUBLE CODE (DTC) LIST | Go to Symptoms - Cruise Control |