Diagnostic Test

WARNING: This page is about a different variant/trim than selected.

CHECK TRANSMISSION FLUID LEVEL
1. Check the transmission fluid level in accordance with the Service Information. Refer to: CHECK FLUID LEVEL, 8P75PH Transmission .
  Is the Transmission fluid at the proper level?
  
  Yes
  - Go To 2
  No
  - Correct the transmission fluid level.
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .
CHECK IF TRANSMISSION CONTROL MODULE (TCM) SOFTWARE UPDATE IS AVAILABLE
NOTE:
Read Service Bulletins to determine if the software update is applicable to the customer complaint.
1. With the scan tool, check if a TCM software update is available that may be related to the customer complaint.
  Is an update available?
  
  Yes
  - Perform the TCM PROGRAMMING PROCEDURE. Refer to: MODULE PROGRAMMING, 8P75PH .
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .
  No
  - Refer to 3.
READ AND RECORD DTCS AND ENVIRONMENTAL DATA - ERASE DTCS AND CHECK FOR DTC TO RETURN
1. With the scan tool, read DTCs in all Electronic Control Units (ECU's) and record on the repair order.
2. With the scan tool, run a vehicle Scan Report, or record the Environmental Data related to the DTCs.
3. With the scan tool, erase all DTCs.
4. Turn the ignition off for a minimum of 10.0 seconds.
5. Turn the ignition on.
6. Using the recorded Environmental Data and the When Monitored Conditions above, operate the vehicle in the conditions that set the DTC.
7. With the scan tool, read DTCs.
Did the DTC return?

Yes
- Replace the Transmission in accordance with the Service Information. Refer to: REMOVAL AND INSTALLATION, 8P75PH Transmission .
- Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .
No
- Perform the TESTING FOR AN INTERMITTENT CONDITION procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .