Question about GMC Envoy
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Posted on Jan 02, 2017
SOURCE: Envoy 2006 gas & engine lights
The problem is that there are updates for the computer in your vehicle.The dealership can do what they call a flash and install those updates.The bad part in my opinion is that they dont inform the public of this and they will try to sell you a new computer when you dont need it.
Posted on Mar 03, 2009
The Powertrain Control Module (PCM) uses the cooling fan speed signal in order to determine the actual fan speed in relation to the desired fan speed. The PCM uses the cooling fan speed signal in order to reduce the cooling fan noise and in order to maintain the powertrain cooling requirements. The PCM supplies power and ground to the clutch hall effect sensor of the cooling fan clutch. The hall effect sensor returns a signal pulse through the speed signal circuit in response to the reluctor track, which is located inside the fan clutch. If during operation, the PCM detects a loss of the cooling fan speed signal, DTC P0526 will set
Posted on Mar 05, 2010
This code indicates a problem with the fan clutch, the speed it is running is not the speed it was commanded to run/ The fan clutch assembly needs replacing.
Posted on Sep 09, 2010
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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