· Chris Hammond
Last Updated

GMC Envoy Secondary Air Pump

Dealing with a persistent check engine light? Find out how one car owner solved the issue by replacing a relay and then the air pump at the dealership.

Dealing with a persistent check engine light? Find out how one car owner solved the issue by replacing a relay and then the air pump at the dealership.

so last week we took the Envoy in to the dealer to get the check engine light taken care of. They replaced a relay for the secondary air pump, well on Friday the damn check engine light came back on.

Today we took it back into the dealer, thankfully they were really cool and fixed it again at their cost. This time they replaced the air pump itself, which I think was the problem to begin with. I’m thinking that we probably got a good deal out of it, assuming replacing the relay was cheaper than replacing the air pump.

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