Thread: 2003 GMC Envoy 6 cyl.
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Old 08-11-2008, 12:42 PM
josh309 josh309 is offline
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2003 GMC Envoy 6 cyl.
I'm new at car repair. I have a service code of PO128 - was told to replace thermostat. Where is it? Would like to see a photo of where it is under-the-hood. Thanks for any help.
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