This 2012 Chevrolet Silverado came in with the complaint that the battery would go dead if the owner let the truck sit for a week. No one was able to replicate the concern including myself. I went a couple of steps further and eventually got the truck to act up. I was concerned that the … Continue reading “2012 Chevrolet Silverado, Battery Goes Dead”
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 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 Chevrolet Tahoe came in with the complaint that the cruise control had been not working at times but now the situation had changed to not working at all. With or without a scan tool this is a very easy diagnosis. Checking the engine codes there was a code P0573 00 for a fault … Continue reading “2007 Chevrolet Tahoe Cruise Control Does Not Work”
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”
This 2004 Chevrolet Tahoe came in with the complaint that the a/c was not cold due to the compressor not coming on. Whenever the a/c was turned on the snowflake on the digital display would flash. This Tahoe has auto a/c controls. I checked codes with my Tech 2 scan tool and there was a … Continue reading “2004 Chevrolet Tahoe, Compressor Will Not Turn On”
This 2008 GMC Yukon came in with the complaint of reduced power and the vehicle could not be driven over about 35 mph. There were a lot of codes stored but the only one of real relevance was Code P0641 Symptom 00, 5 volt reference circuit 1. I looked at data under the TAC section … Continue reading “2008 GMC Yukon, Reduced Power Mode, Code P0641 00 Stored”