P1638 Diagnostic Trouble Code Discussion for February 2019
TCM Internal - CAN 1 RAM Performance
Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.Trouble Ticket Help Requests for DTC P1638
| Help Request | Posted | |
| 2000 Chevrolet Corvette 5.7L Code P1638 VIN: 1G1YY32GXY P1638: Generator 'F' Terminal Circuit Malfunction. ... issues.Replacing a defective battery and tightening the ground cable on the block solved some of the weirder ones. Was setting a P1637 code. (Gen L term.) Using GM's code chart (I should know better) led me to replace the alt. Now it charges fine, but ... |
February 05, 2019 |
