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 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 2004 Chevrolet Silverado came in with the complaint that the air only blows through the defrost and will not blow out of any other location. There were codes B0263 and B3770 stored in the HVAC module. The codes refer to mode actuator faults. To access the actuator, the driver’s side heater floor vent extension … Continue reading “2004 Chevrolet Silverado, Changing The Mode Actuator”
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 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 2004 Chevrolet Silverado came in with a faulty passenger side blend door actuator. In the last post I got you to this point. If you have not yet read that post please click here. Now that the dash cover is off and you can see the actuator, but you still cannot get to it. … Continue reading “2004 Chevrolet Silverado, Changing The Passenger Side Blend Door Actuator, B0424”
This 2004 Chevrolet Silverado came in with multiple hvac actuator faults. After diagnosing a faulty passenger side blend air door actuator with my Tech 2 scan tool it was time to remove the dash cover. Not a big deal but there are a lot of steps. Lift the lower edge of the dash end caps … Continue reading “2004 Chevrolet Silverado, Dash Cover Removal”
This 2003 Chevrolet Silverado came in with the air flow stuck on defrost. A simple diagnosis of a code B0263 found a faulty mode actuator. This repair applies to 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, and 2011 Chevrolet Avalanche, Silverado, Suburban and Tahoe. It also applies to Cadillac Escalade, GMC Sierra and Yukon … Continue reading “2003 Chevrolet Silverado, Changing the Mode Actuator, Code B0263”
This 2004 Chevrolet Avalanche came in with multiple a/c problems including a code B0268, fault in fresh air /recirculation actuator assembly. This procedure applies to full sized Chevrolet and GMC trucks from 2003 to 2007 Classic. Avalanche, Sierra, Silverado, Suburban, Tahoe and Yukon. 1999 through 2002 Trucks would also be very similar. This post is … Continue reading “Changing The Recirculation / Fresh Air Door Actuator Part 2”
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”