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 numbers below refer to the step numbers on the diagnostic table.
- 2: This step tests the transfer case electrical control of the lamp circuits.
- 3: This step helps determine module failures.
- 4: This step tests the affected lamp circuit for an open or high resistance.
- 5: This step tests the lamp feed circuit for an open or short to ground.
Transfer Case Shift Control Switch Indicator Inoperative - One or More
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Transfer Case Control Schematics Connector End View Reference: Transfer Case Control Connector End Views |
|||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 |
|
Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
| 3 |
|
Go to Step 7 | Go to Step 4 |
| 4 | Test the affected indicator control circuit for an open or high resistance. Refer to Testing for Continuity
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 8 | Go to Step 5 |
| 5 | Test the LED dimming supply circuit for an open or short to ground. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 8 | Go to Step 6 |
| 6 | Replace the transfer case shift control switch. Refer to Transfer Case Shift Control Switch Replacement . Did you complete the repair? |
Go to Step 8 | - |
| 7 | Replace the transfer case shift control module. Refer to Control Module References
for replacement, setup, and programming. Perform the Clutch Reset Procedure. Refer to Transfer Case High/Low Clutch Reset . Did you complete the repair? |
Go to Step 8 | - |
| 8 |
|
Go to Step 2 | System OK |