This 2014 GMC Enclave came in with the complaint that the engine would fail to start sometimes and occasionally stall while driving. Multiple warning lights would come on in the dash. I checked codes and found codes P0689 and P1682 stored in the PCM. In researching the codes I found a GM TSB #19-NA-276 I … Continue reading “2014 GMC Acadia, Stalls Sometimes, Codes P0689 and P1682”
This 2017 Buick Enclave came in with the complaints that the a/c would stop and a “message” would appear in the dash. It took a few times checking this problem out for the problem to actually occur. There were no codes stored in the pcm related to the charging system. There were however low voltage … Continue reading “2017 Buick Enclave Alternator Stops Charging”
This 2007 Chevrolet Tahoe was towed in with the complaint that the engine stopped running after running over a bump in the road. I checked codes and data and found codes B1370, B1380, B1395, B1517, B1529 and P0615 stored amongst other but these all related to the no crank condition. They are generally associated with … Continue reading “2007 Chevrolet Tahoe, No Crank Condition”
This 2006 Chevrolet Silverado came in with the complaint that the driver’s temperature door would shift between heat and a/c without the controls being adjusted. The actuator had been replaced with a quality ACDelco part. Testing found that the actuator counts on the scan tool would fluctuate when the actuator harness was wiggled around slightly. … Continue reading “2006 Chevrolet Silverado-Driver’s Temperature Door Erratic”
This 2009 GMC Yukon came in with the complaint that the power liftgate did not work and that the rear outside switch has already been replaced. It is the most common failure point in the system but not this time. Starting from scratch I checked the fuses and found that fuse #71 was blow. It … Continue reading “2009 GMC Yukon-Power Lift Gate Not Working”
This 2003 Chevrolet Express 2500 van with the 5.3 liter engine was towed into my shop as a no crank condition (starter does not work). There were two problems found. The IGN A fuse was blown in the underhood fuse box and the starter was no good. The starter had been replaced the day before … Continue reading “2003 Chevrolet Express Van-No Crank Condition”
This 2009 Chevrolet Silverado came in with the complaint that the heater was only mildly hot unless the temperature was set to 90°F. When set to 90° the heat worked very well. I should point out that this truck has automatic HVAC controls as evidenced by the word “Auto” on the control head assembly. I … Continue reading “2009 Chevrolet Silverado – Poor Heat If Temperature Set Below 90°F”
This 2009 Chevrolet Silverado came in with the complaint that the a/c was blowing out hot air on the driver’s side of the dash.The vent temperature was 140°F and the outside air temperature was 97°F in August in sunny South Carolina. I told the customer that I would not be able to get to it … Continue reading “2009 Chevrolet Silverado Driver’s Side Air Stuck On Heat”
This 2008 Chevrolet Avalanche came in with the complaint that the right front turn signal did not work. This article applies to Avalanche, Escalade, Silverado, Sierra, Suburban, Tahoe and Yukon trucks and suv’s. This generation of GM truck or Suv does not use a turn signal flasher relay as we have always known in the … Continue reading “2008 Chevrolet Avalanche Right Front Turn Signal Inop”
This 2007 GMC Yukon came in with multiple complaints among which were the engine seemed to have no power, the Service Engine Soon, ABS and Traction lights were on and there was a stability message displayed in the Driver’s Information Center (DIC). The customer also stated that the vehicle ran fine sometimes but as soon as the … Continue reading “2007 GMC Yukon Multiple Misfires-Codes-P0300-P0352-P0354-P0356-P0358”