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Why won't the dash vents work on your Chevy trailblazer when all the others work fine Thanks?
Wiki User
∙ 12y ago
The air transfer door module needs to be replaced. Special tool required and is available at the dealership. This tool reduces the laboour charge from a 4.5 hour job to a .6 hour job. There is a technical service bulliten published about the tool and the fix so get the dealer to look it up. Don't get ripped off. To do it yourself it is a complete dash removal so it is well worth it to pay a Chevy dealership.
Wiki User
∙ 12y ago
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