Test Description
WARNING: This page is about a different car, the 2007 GMC Yukon XL and 2007 Chevrolet Suburban. 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: DTC P0602 indicates the TCM is not programmed.
DTC P0601, P0602, P0603, P0604, or P062F
| Step | Action | Yes | No |
|---|---|---|---|
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 | Is DTC P0602 set? | Go to Step 3 | Go to Step 4 |
| 3 | Program the TCM. Refer to Control Module References
for replacement, setup, and programming. Does DTC P0602 set again? |
Go to Step 4 | Go to Step 5 |
| 4 | Replace the TCM. Refer to Control Module References
for replacement, setup, and programming. Did you complete the replacement? |
Go to Step 5 | - |
| 5 | Perform the following in order to verify the repair:
Has the test run and passed? |
Go to Step 6 | Go to Step 2 |
| 6 | 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 |