Charging System Diagnosis
Today, a 2007 Silverado came in with a complaint of "Service
Charging System" message comes on at idle at times. It did
not come on for me after a 10 minute idle period. Charge
rate was 13.85 volts after the long idle period. Scanning
the PCM, P0622 was set as history. I unplugged the two wire
connector and probed the F terminal with a test light to B+.
The F terminal signal on the scanner went from 0% to 97%.
James from Florida
17 Replies Received (View Replies)
17 Replies Received (Hide Replies)
2007 Chevrolet Silverado 1500 LS 4.8L