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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2006 - 2009 TrailBlazer SS Tech > 06-08 SS General Tech Q&A > General

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  #1  
Old 04-08-2017, 02:01 AM
jbeasley60 jbeasley60 is offline
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envoy denali GMC Envoy Denali
white 5.3L V8 4X4
Join Date: Sep 2015
Location: denver
Posts: 3
Check engine light

Hi all I have an 06 envoy denali check engine light is on for the vent valve and purge valve,I replaced both wasnt that truck runs fine.I took it i to the shop they are saying its the fuse box and want 1100 to fix I dont have the cash as of now and need to get emissions.How can I get the light off, The scanner wont reset it,Ive uhooked the battery for an hour still nothing I need it off for emissions then Ill get it fixed.Any help would be greatly appreciated
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  #2  
Old 04-08-2017, 01:40 PM
EnvoyBoy2004's Avatar
EnvoyBoy2004 EnvoyBoy2004 is offline
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2004 GMC Envoy SLT
Graphite Metallic 4.2L I6 4X4
Join Date: Sep 2014
Location: NY
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There's no way to fool the PCM into thinking that a detected problem isn't there anymore. The only possible way is to have the PCM tune reprogrammed to ignore the fault, but I doubt you can find someone to do that.

If it's really the fuse box (you need to find out which one, underhood or rear seat) and then find one at a salvage yard.
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Old 04-08-2017, 03:03 PM
jbeasley60 jbeasley60 is offline
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envoy denali GMC Envoy Denali
white 5.3L V8 4X4
Join Date: Sep 2015
Location: denver
Posts: 3
Its the under hood box,Havnt found any around here where im at Ive ordered 2 from ebay and both were the wrong ones when shipped to me.I figured as much Thank you for reply
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