...2004 envoy. Was told by my very reliable mechanic that the cause for this is the pump being exposed to the element too much, and it shorts out eventually, a very common problem with this car. ...
gmc envoy about 5 months ago. Now its become very noisy and sounds like a jet engine at start up (cold). What could be wrong? A defective pump or maybe water has got in it? Im at a loss. Please help!!
...gmc envoy is that there is a problem with the secondary air injection system, you will need to check the fuse located in the engine compartment first, the next step is to start the truck cold and ...
...GMC envoy xl Finding water in check valve need to find location of air pump Secondary Air Injection (AIR) Pump (K18) On the left hand frame rail near G304 just behind the electronic brake control ...
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