Question about 2004 Chevrolet TrailBlazer
CODE PO526 - FAN SPEED SENSOR. POSSIBLE CAUSE WIRING POOR CONNECTION BAD SPEED SENSOR.
Posted on Dec 29, 2010
Having the same problem on my 2005 TB . 4 month old fan clutch and guess what? It's a dorman should have gone with original one .
Posted on Nov 07, 2013
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Posted on Jan 02, 2017
SOURCE: 2004 trailblazer, 2 wheel drive.
A couple of things come to mind. Double check the wiring at the fan clutch, check the whole harness, there is a known problem wth chaffing there. Is it a Dorman brand fan clutch? These have been known to be bad out of the box. The other thing that could be wrong is the actual speed sensor on the new fan clutch. Hope some of this helps.
Posted on May 31, 2011
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