Question about 2004 GMC Envoy
The thermostat on this vehicle's In-line 6
cylinder engine is on the driver's side of the engine, below &
behind the alternator. You have to remove the alternator to gain access to the thermostat housing. You also need to disconnect the battery before you remove the alternator to avoid sparks and shorts.
Most directions outline removal of the alternator to gain easy access to the hose clamps, bolts and housing of the thermostat. I have located a site that after free registration, has detailed instructions on how to do this job, and the link below that describes an easier method with photos. Check out:
Posted on Mar 15, 2011
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Posted on Jan 02, 2017
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