Diagnostic Aids
WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- If all circuit tests are OK, ensure the transmission pass through connector and harness terminals are clean and not damaged, and the charging system is functioning correctly.
- Verify there is a good connection at the body control module (BCM) especially if DTC P0700 is also set with this code.
DTC P2534
| Step | Action | Values | Yes | No |
|---|---|---|---|---|
| 1 | Did you perform the Diagnostic System Check - Vehicle? | - | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 |
IMPORTANT:
Before clearing the DTC, use the scan tool in order to record the Freeze Frame and Failure Records. Using the Clear Info function erases the Freeze Frame and Failure Records from the TCM.
|
- | Go to Step 3 | Go to Testing for Intermittent Conditions and Poor Connections |
| 3 |
|
- | Go to Step 4 | Go to Step 5 |
| 4 | Test the ignition 1 voltage circuit of the TCM for a short to ground between the underhood fuse block and the TCM. Refer to Testing for Short to Ground
and Wiring Repairs
. Did you find and correct the condition? |
- | Go to Step 7 | - |
| 5 | Test the ignition 1 voltage circuit of the TCM for an open between the underhood fuse block and the TCM. Refer to Testing for Continuity
and Wiring Repairs
. Did you find and correct the condition? |
- | Go to Step 7 | Go to Step 6 |
| 6 | Replace the TCM. Refer to Control Module References
for replacement, setup, and programming. Did you complete the replacement? |
- | Go to Step 7 | - |
| 7 | Perform the following procedure in order to verify the repair:
Has the test run and passed? |
- | Go to Step 8 | Go to Step 2 |
| 8 | With the scan tool, observe the stored information, capture info and DTC info. Does the scan tool display any DTCs that you have not diagnosed? |
- | Go to Diagnostic Trouble Code (DTC) List - Vehicle | System OK |