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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 142 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - DTC P0218 To DTC P0961) >> DTC P0601, P0602, P0603, P0604, or P062F >> Test Description

Test Description

WARNING: This page is about a different car, the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. 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.

  1. 2:  A DTC P0602 indicates the TCM is not programmed.
DTC P0601-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 reset?		 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:
  1. Select the DTC.
  2. Select Clear Info.
  3. Start the engine.
  4. Select specific DTC, for the DTC that was set.

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
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