Diagnostic Test

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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 8HP70 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 PROGRAMMING
- Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .