This 2003 GMC Envoy came in with the complaint that the passenger side low beam would not work. The customer further stated that they had tried to replace a burnt socket. Well let’s pull the light assembly out and see what kind of mess we have. There are two retainers that have to be lifted … Continue reading “2003 GMC Envoy, Low Beam Headlight Inop”
This 2004 Chevrolet Tahoe came in with the complaint that the air on the driver’s side would change from cold to hot while driving down the road. When it shifted to hot the customer could not get it to turn back cold. Sounds like a faulty air mix actuator to me. I checked codes and … Continue reading “2004 Chevrolet Tahoe Blows Hot Air”
This 2000 GMC Yukon came in with the complaint that at different times the stop lights, tail lights, turn signals and back up lights stop working. I did the basis bulb and socket tests and found nothing wrong. When I got to looking a little deeper in the system I found this rear harness junction … Continue reading “2000 GMC Yukon, Rear Lights Inop”
This 1997 Chevrolet Suburban came in with the complaint that the cruise would work sometimes. This repair applies to multiple Chevrolet and GMC trucks and vans that use the cruise servo number 25315088, gasoline only, no diesels. For a list of these vehicles please go to the ACDelco website and you will find a tab … Continue reading “1997 Chevrolet Suburban, Cruise Control Inop”
This 2004 Buick Rendezvous came in with a complaint that the turn signals and hazard lights would not work. The customer stated that the problem occurred shortly after backing a boat in the water. I started by checking to see which fuses were involved and located the fuse box on the passenger side of the … Continue reading “2004 Buick Rendezvous, Turn Signals and Hazard Lights Inop”
This 2000 Chevrolet Silverado came in with a complaint that there was not much air coming through the vents. The customer said he thought the blower motor might be worn out. A quick look under the dash and I saw that this truck has a cabin air filter. I removed the single screw at the … Continue reading “2000 Chevrolet Silverado, Changing The Cabin Air Filters”
I have been asked many times about the auto blower control on 2003- 2007 Chevrolet Silverado Classic and GMC Sierra Classic trucks so I decided to take some readings on my truck. This also applies to the Tahoe, Yukon, Avalanche, Escalade and Suburbans of the same era with auto a/c controls. The blower control processor … Continue reading “2003 Chevrolet Silverado, Blower”
This 1997 Chevrolet S10 Blazer cam in with the service engine soon light on and a complaint of low power. Checked data with Tech 2 scan tool and found codes P0102 MAF sensor circuit low frequency and P0340 cam position sensor circuit. I checked CMP retard and found it fixed at -60 degrees. … Continue reading “1997 Chevrolet S10 Blazer, Codes P0102 and P0340”
I have been asked several times how to change the blower motor in later model Chevrolet and GMC Full sized trucks as there are no mounting screws. This includes 2003 through 2007 Classic series trucks. There is a locking tab that has to be pulled down past the stop and then the motor assembly can … Continue reading “2007 Chevrolet Silverado Classic, Changing The Blower Motor”
This 2003 GMC Envoy came in with the complaint that the a/c will only blow out the defrost and floor. Not through the dash vents. I checked codes and found a code B0263 for a fault with the mode actuator. I first ran into this problem after changing a battery in one of these vehicles … Continue reading “2003 GMC Envoy, No A/C Vent Control, B0263”