One problem related to alternator/generator/regulator has been reported for the 2007 Chevrolet Silverado 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Chevrolet Silverado 1500 based on all problems reported for the 2007 Silverado 1500.
When driving the truck the lights would dim and then have a loss of power. Didn't think much of it until one day getting out of the vehicle and shutting it off I went to put the key back in the ignition and there was no power what so ever no dome lights nothing. . . No clicks no dash lights nothing. Then had someone jump me power and truck started right away. Same day had my battery checked and alternator and everything came out fine nothing was wrong with it. Happened again about a week later but this time truck hesitated when key was turned then it did not start reset the clock in the truck and then had lights dimming everytime blinkers were turned on. Got home and had a feeling truck would not start if I took the key out sure enough everything was dead when I tried turning it back on. Had to jump it again. When that happened I got the battery replaced thinking it was faulty. Two weeks went by and it was fine then after punching on the gas a little to pass a semi the locks went up and down really fast and had lights dim again no message on the dash or anything. I got home and truck did not start again. Jumped it again then a week later going to work on the freeway the truck had extremely bad tremors and then the locks started locking and unlocking again the lights and stereo were going on and off and abs light came on and vehicle kept going into neutral and drive every other few seconds witch caused a concern for my safety. Good thing I was only a few miles away from home. I turned around went home and sure enough turned it off put the key back in and no power . Explained failure to a dealership and said possibility was the ecm. And they could do nothing unless it was duplicated.