My wife's 02 Trailblazer is giving us two problems. We just got the truck in January. The whining sound was there when we test drove, but the man said it was probably just air. Bull. It doesn't do it every time, but most of the time. Taking off, driving, slowing down.... the same whining noise from the front passenger tire. It doesn't make a different noise or change when turning, the noise stays the same.

Then I noticed the service airbag light was on. My wife is pregnant, so I drove the truck til the shop fixed the airbag problem. When the airbag light came on, a clicking noise also started in the dash. The shop changed some computer dealing with the airbag, took it to a dealership to get the computer programmed. The clicking sound is still there. My wife said it only comes on when the A/C is on. But I drove it an hour and a half to the mechanic and it make the clicking sound the whole time. I didn't have the A/C on. Well I got to the mechanic, and the noise stops. He told me to stay in town for awhile to see if it comes back. Haven't heard the sound since this morning. It sounds sort of like a clicking pen. It has two sounds, like click in, click out. I spent 4 hours staying near the shop, and didn't hear a thing.