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Discussion Starter · #1 ·
i have a 2005 envoy that had the engine light come on.
i took it to auto zone and was told the code showed i needed a pcm relay which i bought.
i took the vehicle to a friend who is a mechanic and after opening the fuse and relay box under the hood he could not locate that particular relay. would anyone know where i could find the location of the pcm relay? thankyou.
 
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