Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Test Description
2004 Oldsmobile Bravada RWDSECTION Test Description
WARNING: This page is about a different car, the 2004 Chevrolet Corvette. 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.
- 2: Tests if the Remote Control Door Lock Receiver (RCDLR), which is part of the Remote Keyless Entry (RKE) system, is able to communicate with the scan tool. 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.
- 3: The presence of DTCs which begin with "U" indicate some other module is not communicating. The specified procedure will compile all available information before tests are performed.
- 4: Tests if a malfunction exists in the RKE system, which controls the Tire Pressure Monitor (TPM) system.
- 5: Tests if a malfunction exists in the TPM system.
Diagnostic System Check - Tire Pressure Monitoring
| 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 in Data Link Communications |
| 3 | Select the RKE Diagnostic Trouble Codes (DTC) function on the scan tool. Does the scan tool display any DTCs that begin with a "U"? |
Go to Diagnostic Trouble Code (DTC) List in Data Link Communications. | Go to Step 4 |
| 4 | Does the scan tool display any RKE DTCs? | Go to Diagnostic Trouble Code (DTC) List in Keyless Entry | Go to Step 5 |
| 5 | Does the scan tool display any TPM DTCs? | Go to Diagnostic Trouble Code (DTC) List | System OK |
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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.