2004 Chevrolet Silverado
Mileage
207,794
Service Date
8/21/2024
Services Performed
- Scanned all control module for relevant faults: found U0106 – Loss Communication with Glow Plug Control Module, P0880 – TCM Power Input Signal stored in powertrain controller(s). Found C0055 – Rear Wheel Speed Sensor Circuit Fault stored in brake controller. PCM fault P0880 showed as "current" fault. Removed transmission controller to facilitate circuit testing. Load tested all power and ground circuits with and without TCM connected- all OK. Cleared P0880 from transmission controller, fault immediately returned. Noted transmission controller was recently "refurbished" by a third party supplier. Found original TCM in back of passenger compartment. Installed original TCM to vehicle, P0880 easily cleared and did not immediately recur, nor did it recur during the following test drive. Test drove vehicle extensively. P0880 Returned intermittently. Dissected wiring from TCM to fuse box & inspected for chafing, opens & shorts- none found. Inspected terminal in fuse box that feeds TCM constant power, found evidence of "fretting". Cleaned terminal, added stabilant treatment to terminal to promote better contact. Replaced glow plug control module to address lack of communication fault. Test drove vehicle numerous times, rechecking faults after each drive cycle. No powertrain or brake faults returned.
TONY H. gave our service a 5 star review on 8/22/2024
