I have an 03 Trailbazer, and the AC is intermittent. It randomly goes from heat to a/c. It seems to be a problem with the door inside the heater box. With the vehicle going up hill or down hill, the a/c will go on and off. Seems like the door is loose. Anyone have any problems like this, and what is envolved in the repair.
Thanks

 

I have also some A/C troubles with my 2002 model. I don't notice anytrouble up or downhill butafter somemanual change in ventilator or T°, is resulting passenger side cold and driver side hoter with same T° both for side !I am waiting to reset computer, code ... and see.
On the other hand the batterie went flat, and after his replacement the RPM engine when cold is too high. I think is related with computer too.
Er