Having problems with your 2008 Chevrolet Trailblazer ?
With the keys out of the ignition and car not running, defrost fan still blows and wont turn off. Battery has to be disconnected or blower fuse has to be removed to get fan to turn off.
\012Hi:) The relay marked 45 is for the Fan if the contacts are welded shut the fan will say on all the time and it should be operated by a temperature sensor just behind the alternator in the engine.
Repair Help & Product Troubleshooting for 2008 Chevrolet Trailblazer
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