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2004 gmc envoy_sle_xl
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4 Posts
Discussion Starter #1
ok, here goes . I've had my SES light on for over a year. It switches between
p442 or 455. I tried everything I could find posted here.", so Ibrought it in to a dealer.
After 5 hrs they told me there's nothing wrong with the vehicle, that the gas cap probably wasn't seated right. The same thing anther mechanic told me last year!
The problem is I can't get the emissions testing done, because of the light and the dealer says there's no problem. But yet, the light just turned on at 48 miles like clockwork. Any suggestions would be great!:bonk:
 

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2004 gmc envoy_slt
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2,569 Posts
Find a different dealer or mechanic that is smart enough to understand troubleshooting these vehicles.

You may have a crack in the fuel inlet pipe/hose. this is a common issue with trucks in the northeast.
 
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