Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Hi Matthew, my name is***** for posting your question to Just Answer. I am an ASE Certified Auto Technician with 45 years of real world experience in dealerships and the aftermarket. I was the owner of a facility for 20 of those years. I am confident we can resolve your problem together. Please remember I don't know your skill level. I can't see, smell, hear, or touch the vehicle. It may take a few back and forth replies to get to a satisfactory resolution. I will also make every effort to give all of the information you may need with the expectation you will give me a positive rating. Please be aware that I am usually working with a few people at a time so it may take a few minutes to respond.
Does this Tahoe have manual heater controls?
So it is climate controlled?
Do the controls light up when the ignition is on?
If this Tahoe has automatic climate control there will be codes in the "Body Control module" BCM. Do you have access to a scanner that can access the BCM? If yes pull the codes and get back to me I will walk you through a fix. God bless you in the New Year!