This 2002 Pontiac Grand Prix had already been diagnosed with a faulty ignition switch. The faulty switch was not allowing the blower motor to operate properly. Click here to view that post. Now on to changing the ignition switch. Disconnect the battery. The first step is to remove the lower trim panel under the steering … Continue reading “2002 Pontiac Grand Prix, Changing The Ignition Switch”
This 2002 Pontiac Grand Prix GT came in with the complaint that the blower would not work on the lower speeds and that the high blower would work most of the time. A quick inspection of the system also found that when the blower did work on high speed it would have a delayed turn … Continue reading “2002 Pontiac Grand Prix Blower Inoperative, Erratic”
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 1992 Buick Park Avenue came in with the complaint that the blower did not work. Customer also stated that the blower motor had been replaced about a year ago. The blower motor is located in the center of the firewall under the hood. The first thing that I found was that the blower motor … Continue reading “1992 Buick Park Avenue, Blower Inop”
This 2003 Toyota 4Runner came in with the complaint that the a/c stops cooling after a while and the a/c lights on the dash start flashing. This is a common problem on later model Toyota’s in general. Most of the time it is just a failed compressor clutch relay but sometimes as in this case … Continue reading “2003 Toyota 4Runner, A/C Stops Cooling”
This 2000 Chevrolet Silverado came in with the complaint that the a/c was not getting cold. A quick visual inspection found that the a/c belt was gone. Most owners do not even realize there is a separate a/c belt. In order to replace the belt, the primary serpentine belt has to be removed. This requires … Continue reading “2000 Chevrolet Silverado, Changing The A/C Belt”
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”
This 1992 Toyota Tercel came in with the complaint that the a/c compressor would not engage. The customer stated that he had just replaced the compressor (used) and the system was gassed up. I noticed that the indicator light would also no come on when the a/c button was pushed. I looked at the wiring … Continue reading “1992 Toyota Tercel, A/C Inop”
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 1992 Cadillac Deville came in with no blower operation. I checked at the blower motor which is on the right side of the picture behind the bar that goes between the two front strut towers. No power was present with the key on and blower set to high. The blower power module is behind … Continue reading “1992 Cadillac Deville, Blower Inop”