The air conditioning on my 2006 Chevy Trailblazer ext stopped working. The problem was the blower motor resistor module and resistor module connector. The parts had melted together, causing the wires to become loose at the connection. Apparently this is a common problem with my Chevy model. There are many online postings indicating that the problem could cause a fire. Chevrolet company refused to even look at my vehicle until I paid a $110 diagnostic fee. The service technician immediately knew what the problem was and explained that it was a common problem with my model and the Tahoe. The gas gauge also stopped working recently which I was told by the technician that it too was a common problem. There are numerous complaints on these parts as well as the brake light circuit boards, which also went out on my vehicle. The technician once again said that it was a common problem. These parts seem to be failing shortly after the warranty expires. There are many issues with the electrical system in this vehicle. The problems are hazardous safety issues and are known to the Chevrolet corporation. I was able to find the parts at nearly 80% cheaper than what the dealer wanted to charge me, not including the labor and diagnostic fee. Safety recalls on these parts should be issued.

- El Mirage, AZ, USA

2006 Trailblazer ext, 12/08 exiting freeway onto 50 mph roadway and accelerating from stop sign at top of ramp, when engine lost power and slowed to a stop, with engine running and check engine light on, all at once. Almost broadsided on drivers door by approaching traffic.. onstar said in was a throttle valve body issue and had it towed to dealer for night drop off. Next morning no code found, but they cleaned the throttle body valve assembly and linkage. No charge for diagnostics or cleaning! 4/21/09, 3000 miles later, the check engine light comes on with vehicle operating normally. Onstar says get it to a dealer in one day, its the throttle valve body and linkage. $100 for diagnosis already sent to dealer by onstar. Dealer says the electronic radiator fan clutch is not engaging and engine runs cold, technician said no, it runs hot, neither of which was occurring. Dealer says they have a history code for throttle valve and linkage, so its obviously carboned up and though its not listed anywhere in owners manual for such service, they say its a maintaining issue, don't void your warranty. If you don't let us do it for $149, it's $52 for reading the history code. They remove the air cleaner duct and they try to sell me a bill of goods, I.e. look at the carbon build up, which is nothing more than a very thin, thin coating of darkened oil vapor residue which is pulled in from the crank case vent hose attached below the intake horn, after he air filter and sensor. Rip off! the vehicle ran perfect but for the check engine light, never ran cool or over heated and was getting good mileage. I let them replace the $600 plus fan for the $100 diagnostic fee. To keep from voiding my warranty, I had to spend the $149 for an old history code, to prove that I maintained the vehicle per dealer recommendations. Rip off !!!

- Thousand Oaks, CA, USA