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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 > OEM Issues

OEM Issues Original Equipment Repairs and/or Problems

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  #1  
Old 08-11-2012, 11:12 PM
damaxic damaxic is offline
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2003 Chevy TrailBlazer LS
Dark Gray Metallic 4.2L I6 4X4
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drive by wire

Anyone know how to improve the response time of the drive by wire throttle. I am the type of driver who likes to gradually speed up but my Trailblazer doesn't respond well to a gradual take off.
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  #2  
Old 08-12-2012, 01:02 AM
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petevw petevw is offline
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2002 Chevy TrailBlazer LTZ
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Quote:
Originally Posted by sidehopper View Post
i say get a chip and a throttle body spacer....
"Sidehopper" has no idea what he's talking about.
"chips" only last for a while, since the PCM will eventually bypass them and return to factory defaults, and spacers are worthless "snake oil" that just makes the dollars go out of your wallet faster.

IMO, make sure the engine is tuned up (plugs, filters, etc, etc), clean your throttle body, and finally, get the PCM tuned..
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  #3  
Old 08-12-2012, 11:56 AM
07TB 07TB is offline
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2007 Chevy TrailBlazer LS
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You need to reprogram the pcm using EFILive or maybe HP Tuners. Here is a short video from youtube

http://www.youtube.com/watch?v=VLsY7dYjenY
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Old 08-21-2012, 03:26 PM
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trailburner trailburner is offline
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2005 Chevy TrailBlazer LS
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how hard is it to do this?
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  #5  
Old 08-21-2012, 03:48 PM
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Ray Dockrey Ray Dockrey is offline
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PCM4Less can do it for you. You send in your PCM and they modify the parameters to something much more desirable.

http://forums.trailvoy.com/forumdisplay.php?f=116
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  #6  
Old 08-21-2012, 05:15 PM
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trailburner trailburner is offline
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2005 Chevy TrailBlazer LS
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thanks!
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