Diagnostic Test

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

CHECK FOR TRANSMISSION FLUID TEMPERATURE SENSOR DTCS

With the scan tool, read Transmission Control Module (TCM) DTCs and record on the repair order.
Are any Transmission Temperature Sensor DTCs set?

Yes
- Repair Transmission Temperature Sensor DTCs. Refer to 8HP45/845RE AUTOMATIC TRANSMISSION - DIAGNOSTIC CODE INDEX .
- Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .
No
- Using the schematics as a guide, check the Transmission Control Module (TCM) connector and all related in-line connector terminals for corrosion, damage, or pushed out terminals. Pay particular attention to the power and ground circuits. If no problems are found, replace and program the TCM in accordance with the Service Information. Refer to MODULE, TRANSMISSION CONTROL, MODULE PROGRAMMING .
- Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .