This 2000 Cadillac STS came in with the complaint that the power door locks would not work from the driver’s power door lock switch and that the door locks would cycle up and down while driving down the road. All other functions on the driver’s door worked fine. It took me a little while to … Continue reading “2000 Cadillac STS, Door Locks Cycle Up & Down While Driving”
This is a list of procedures to replace the multiple actuators on General Motors Trucks and SUV’s from 1999 to 2009. These posts will apply to all of the Full Sized Trucks and SUV’s listed below. There may be slight differences between brands and trim levels. HVAC Calibration Procedure GM Trucks And SUV’s 2003 Chevrolet … Continue reading “Actuator Replacement GM Trucks and SUV’s 1999-2009”
This 2001 Cadillac DeVille DTS came in with the complaint that the passenger side air was stuck on cold. There was a code B0429 stored in the Instrument Panel Module. B0429 relates to a fault with the passenger temperature door actuator assembly. To gain access to the passenger side temperature door actuator the glove box … Continue reading “2001 Cadillac Deville DTS, Passenger Side Air Stuck on Cold”
This 2002 Chevrolet Tahoe had several complaints and this one is no fog lights. I connected my Tech 2 scan tool and checked some basic functions and found that the scan tool could turn on the fog lights. There was a codes stored for a park light malfunction. I checked wiring diagrams and found that … Continue reading “2002 Chevrolet Tahoe, Fog Lights Do Not Work”
This 2003 Cadillac Deville DTS came in with the complaint that the blower motor does not work most of the time. Sometimes it will blow but it seems to blow slower than it should. Using a test light and a jumper wire, I connected one end of my test setup to the purple wire. Then … Continue reading “2003 Cadillac Deville, Blower Does Not Work”
On this 2005 Cadillac Escalade I had to replace a faulty driver’s blend door actuator. Ironically it is mounted on the passenger side of that dash and requires removal of the lower hush panel. If there is no floor mounted center console there is no problem with removing and installing this panel. If there is … Continue reading “Reinstalling The Passenger Side Hush Panel, 2005 Cadillac Escalade”
Although the vehicle I am working on is a 2005 Cadillac Escalade, this information is relevant to many OBD2 vehicles. The Tech 2 makes it simple because the tool does not have it’s own battery supply. therefore if the scan tool will not power up there is a basic problem with power or ground to … Continue reading “Scan Tool Will Not Communicate / Power Up”
The topic of how to perform the actuator recalibration procedure on Chevrolet , GMC and Cadillac Trucks and SUVs has become an ever increasing topic of discussion. For manual systems it does not matter where the a/c controls are set but if you feel the need to do something, turn the blower switch on (I … Continue reading “HVAC Actuator Recalibration Procedure For GM Trucks and SUVs”
This 2005 GMC Sierra came in with the complaint that the air will only flow from the defroster vents, regardless of where it is commanded to. This Sierra has auto a/c controls and no floor mounted center console. Of course the customer brought the truck in, knowing that I had to lay under the driver’s … Continue reading “2005 GMC Sierra, Air Blows Only From Defroster Vents”
This 1988 Cadillac Brougham came in with the complaint that the windshield wipers do not work. I have not worked on one of these in quite a while but I do remember the common problem with the rear wheel drive Cadillac wiper switches. I checked the feel of the switch and sure enough, it “felt” … Continue reading “1988 Cadillac Brougham, Windshield Wipers Do Not Work”