P1683 Diagnostic Trouble Code Discussion for May 2007
Powertrain Control Module Internal Malfunction
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| Help Request | Posted | |
| 2002 Chevrolet Silverado 2500 HD 8.1L Misfire, Poor Fuel Economy VIN: 1GCHK29G22 P1683: Control Module Internal Malfunction. Hello all, This is a farm truck and is used HARD and pulling overloaded trailers.We stay on top of routine maintenance when the vehicle is available to come in to shop. This time it has multiple problems;customer complains of no power and bad running;down to 5... |
May 30, 2007 |
