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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 Vortec 5.3L V8 Engine and Drivetrain > Engine Tunes/Mods

Engine Tunes/Mods Performance Engine Tuning/Engine Modifications

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  #1  
Old 06-11-2017, 10:14 PM
BarnesGN BarnesGN is offline
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2008 Pontiac G8 GT
Graphite Metallic 6.0L LS2 V8 2WD
Join Date: Jan 2017
Location: High Point
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AFM all 5.3 engines

Are all years of the 5.3 in the Trailvoys contain the AFM lifters?
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  #2  
Old 06-11-2017, 10:33 PM
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AWD V8 AWD V8 is offline
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2003 GMC Envoy SLT
Indigo Blue Metallic 5.3L V8 AWD
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I believe that applies to 2006+, my '03 does not have it.
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  #3  
Old 12-10-2018, 05:52 PM
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skidud skidud is offline
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2005 Chevy TrailBlazer LT EXT
Sandstone Metallic 5.3L V8 4X4
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Location: Ohio
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2005 EXT models have it, all 2006 models have it.
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  #4  
Old 01-10-2019, 04:11 PM
Cheep Cheep is offline
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My 2005 5.3 EXT has no AFM or DOD
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  #5  
Old 01-11-2019, 12:26 AM
jbwi112 jbwi112 is offline
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2005 Chevy TrailBlazer LT EXT
Steel Gray Metallic 5.3L V8 4X4
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My 2005 ext 5.3l does have dod/afm and has the code it the glovebox for it
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  #6  
Old 01-11-2019, 10:16 AM
Cheep Cheep is offline
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Maybe it has to do with mine being 2wd? I just changed the cam and there is no DOD hardware or electrical in there.
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