This vehicle came in with the complaint that the blower motor would work sometimes but recently it had gotten to where it did not work at all. I hardly ever see vehicles this old in my shop anymore. This is one problem that I have fixed dozens if not hundreds of times over the years … Continue reading “GM Cars & Trucks 1960’s, 1970’s & 1980’s, Blower Inoperative Erratic”
This 2008 Buick Enclave CXL came in with the complaint that the battery would go dead while driving. The battery light was on and there was a message on the dash to service the charging system. Something else that I noticed but cannot duplicate here is that there was a steady moan from the engine … Continue reading “2008 Buick Enclave Replacing The Alternator”
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”
This 2010 Buick Enclave CXL came in with the complaint that the a/c is not as cold as it should be during the heat of the day. The problem is that with the ambient temperature being 98° F and the heat index at 112°F the best the vent temperature would drop to was the mid … Continue reading “2010 Buick Enclave CXL, A/C Does Not Cool Well”
This 2006 Chevrolet Trailblazer came in with the complaint that the blower would not work after the blower resistor had been replaced. This Trailblazer clearly has manual HVAC controls. However the customer was sold the wrong part or asked to buy the wrong part. I do not know which for sure. The part on … Continue reading “2006 Chevrolet Trailblazer, Blower Does Not Work After Resistor Replacement”
This GMC Yukon came in with the complaint that the power windows and power seats did not work and the Airbag light was on. Checking the fuses found that the SIR or airbag light 15 amp fuse was blown. I also found that the 50 amp MBEC fuse was blown. I replaced both fuses and … Continue reading “2004 GMC Yukon, Power Windows & Seats Inop, Airbag Light Is On”
This 2007 GMC Envoy Denali came in with the complaint that the blower motor would not work. The customer stated that they had removed the blower motor and connected it to battery voltage and ground. The blower motor worked under this condition. This vehicle also has auto temperature controls as indicated by a digital display. … Continue reading “2007 GMC Envoy Denali, Blower Does Not Work On Any Speed”
This 1994 Chevrolet C1500 came in with the complaint that the blower motor either would not work or work sometimes. A quick check of power and ground at the blower motor itself revealed a lack of ground while the problem was present. With the system on high and the blower motor not working I touched … Continue reading “1994 Chevrolet C1500 Blower Inop/Erratic”
It Recently came to my attention that some of my readers wanted to see how to perform an actuator recalibration using a Tech 2 scan tool. The pictures are dark and they are best viewed in low light conditions. Connect the scan tool to the DLC and turn the ignition on. After entering the year,make, … Continue reading “GM “C/K” & “S/T” Vehicles, HVAC Recalibration Using a Tech 2 Scan Tool”