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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 Vortec 4.2L I-6 Engine and Drivetrain > Engine Tunes/Mods

Engine Tunes/Mods Performance Engine Tuning/Engine Modifications

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  #1  
Old 03-09-2019, 02:25 AM
red99ryder red99ryder is offline
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Envoy XUV GMC Envoy SLT XUV
Carbon Metallic 4.2L I6 2WD
Join Date: Dec 2010
Location: Jackson ms
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Jackson Mississippi

Hi Everyone , Long time lurker first time posting . This site has been a wealth of information . I do have a question tho . i am not able or smart enough to fix my problem and was wondering if anyone knows a good Mechanic in the Jackson ms area . I have had the car to the dealers a couple times and dont seem to get the results , Car still misses at idol and will thro code after a bit 4.2 i-6 .. clear code and it will come back after awhile . Been thinking on just trading it lol

Thanks everyone
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  #2  
Old 03-16-2019, 02:06 PM
red99ryder red99ryder is offline
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i guess thats a no darn

good luck eveyone
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  #3  
Old 03-16-2019, 02:53 PM
wcosh's Avatar
wcosh wcosh is offline
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2003 Chevy TrailBlazer LT EXT
Dark Green Metallic 4.2L I6 4X4
Join Date: Aug 2009
Location: Vancouver BC
Posts: 331
Why not run the truck over to Auto Zone and find out what codes are coming up. Then head over to youtube to watch how the necessary repair is done ?
You just might save a bunch of money.
geez, I sound like a geiko commercial
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Old 03-16-2019, 05:27 PM
red99ryder red99ryder is offline
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Quote:
Originally Posted by wcosh View Post
Why not run the truck over to Auto Zone and find out what codes are coming up. Then head over to youtube to watch how the necessary repair is done ?
You just might save a bunch of money.
geez, I sound like a geiko commercial
Been there already , just want someone to fix . Been to the dealer 3 times already as well .

thanks for reply tho
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  #5  
Old 03-16-2019, 06:19 PM
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wcosh wcosh is offline
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2003 Chevy TrailBlazer LT EXT
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Location: Vancouver BC
Posts: 331
Sounds like a coil pack gone bad
Did the Auto Zone guys/girls tell you what codes were set? Or did it even set codes.


-No local mechanic with a good reputation instead of the dealer?

Hope you get it sorted out.
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  #6  
Old 03-30-2019, 05:02 PM
red99ryder red99ryder is offline
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I took it back to the dealer , turns out low compression in one cylinder

not the answer i wanted but an answer all the less

thanks everyone and good luck

red
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