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Posts Tagged: Yukon

Air only blows through defrost vents

Air only blows through defrost vents Air only blows through defrost vents, cannot change heater settings, Escalade, Avalanche, Silverado, Suburban, Tahoe, Yukon, TSB, #04-01-38-008 GM has issued a technical service bulletin (TSB) #04-01-38-008 to address problems with the heating system, blower control, and airflow on the following models: 2003-2005 Cadillac Escalade, Escalade ESV, Escalade EXT 2003-2005 Chevrolet Avalanche, Silverado, Suburban, Tahoe 2003-2005 GMC Sierra, Yukon, Yukon XL If you find that you cannot control any of the heater controls, heating, air conditioning, or airflow, or the air only blows through … Read More

Heater fan won’t stop running – GM products

Heater fan won’t stop running – GM products Heater fan won’t run, Heater fan won’t stop running – GM products, Ranier, Escalade, Avalanche, Silverado, Suburban, Tahoe, Sierra, Yukon, Envoy GM has issued a technical service bulletin (TSB) #06-01-39-002B to address problems with the front blower motor. In some cases in cold weather the blower motor may not run, or if it does, it may not shut off when you turn off the vehicle. The TSB applies to the following vehicles with automatic temperature control: 2004-2007 Buick Rainier 2004-2006 Cadillac Escalade Models … Read More

AC not cold enough – GM products

AC not cold enough – GM products AC not cold enough, Compressor doesn’t run, air conditioning not cold, Escalade, Avalanche, Silverado, Suburban, Tahoe, Sierra, Yukon GM has issued a technical service bulletin (TSB) #04-01-38-013 to address an air conditioning problem where the air conditioning isn’t cold or the compressor doesn’t run. The TSB applies to the following models: 2003-2005 Cadillac Escalade, Escalade ESV, Escalade EXT 2003-2005 Chevrolet Avalanche, Silverado, Suburban, Tahoe 2003-2005 GMC Sierra, Yukon, Yukon XL 2003-2005 HUMMER H2 The problem may be caused by a wiring problem that … Read More

My AC stops cooling and the heat comes on

Why does my AC stop cooling Heater comes on – GM GM has issued a technical service bulletin (TSB) #04-01-38-008 to address AC stops cooling – heater comes on problems with the HVAC system on the following vehicles: 2003-2005 Cadillac Escalade, Escalade ESV, Escalade EXT 2003-2005 Chevrolet Avalanche, Silverado, Suburban, Tahoe 2003-2005 GMC Sierra, Yukon, Yukon XL If it seems that the heating/cooling system in your vehicle has a mind of its own, it’s probably because the wiring harness has rubbed through and is touching metal parts. GM says the … Read More

Service 4WD light on Check engine light on

Service 4WD light on Check engine light on Service 4WD light on, can’t shift into 4WD, 4WD shift doesn’t work, transfer case motor doesn’t work on Avalanche, Silverado, Suburban, Tahoe, Ram, Sierra, Yukon, Check engine light on Cardone, a leading manufacturer of rebuilt transfer case motors has issued a service bulletin advising shops of a reason why a brand new Cardone motor may not work properly. In fact, the same problem may be the root cause of the factory transfer case motor not working. Apparently Chevrolet, GMC, and Dodge ground … Read More

Harsh shift P0717

Fix Harsh shift P0717 Harsh shift on Saab 9-7x, Buick Rainier, Chevrolet Trailblazer, Avalanche, Colorado, Silverado, Suburban, Tahoe, GMC Envoy, Canyon, Sierra, Yukon, Yukon XL, Hummer, vehicles, P0717 GM has issued a technical service bulletin (TSB) PIP4051B for the following vehicles with these transmissions; 4L60E, 4L65E, 4L70E 2006-08 Saab 9-7x 2006-07 Buick Rainier 2007-08 Chevrolet Trailblazer, Avalanche, Colorado, Silverado, Suburban, Tahoe 2006-08 GMC Envoy 2007-08 GMC Canyon, Sierra, Yukon, Yukon XL 2007-08 Hummer The problem shows up as a harsh shift and trouble code P0717. Before performing any major repairs, … Read More

No Heat or AC — GM Trucks

No Heat or AC — GM Trucks Owners of some GM Truck and some SUV owners may experience a problem where they have no heat or AC or cannot control the heating, ventilation and A/C system. They may also find that the system always defaults to the DEFROST mode. The following trouble codes may be stored in memory: B0229-Recirculation Actuator, B0414- Left Air Temperature Actuator, B0424 Right Air Temperature Actuator, or B3770 Mode Actuator Cause GM reports that the problem may be found in the HVAC actuator harness contacting a … Read More


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