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Forums
TrailBlazer, Envoy, 9-7x, Ascender, Rainer, & Bravada
Engine & Drivetrain
Vortec 4.2L I-6
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FAQ: Vortec 4.2L I-6
Mooseman
May 1, 2017
Replies
1
Views
16K
Nov 13, 2020
Mooseman
Sticky
4.2L (LL8) DTC Engine Diagnostic Parameters
Mooseman
Oct 7, 2019
Replies
3
Views
6K
Oct 7, 2019
TJBaker57
Normal threads
M
2007 envoy engine swap
mmakela13
Dec 22, 2014
Replies
0
Views
925
Dec 22, 2014
mmakela13
M
Intermittent P0130 & P0133 codes
freddyboy61
Jan 16, 2016
Replies
0
Views
625
Jan 16, 2016
freddyboy61
C
Interesting 4.2 GM video
c good
Jan 21, 2024
Replies
0
Views
287
Jan 21, 2024
c good
C
Threw a new set of plugs in the TB
Black08TB
Nov 11, 2014
Replies
0
Views
841
Nov 11, 2014
Black08TB
P
NEED HELP
Shifting problems
pell
Nov 25, 2021
Replies
0
Views
711
Nov 25, 2021
pell
P
B
Power Steering Cooler replacement
B33p3r
Sep 7, 2014
Replies
0
Views
654
Sep 7, 2014
B33p3r
B
C
Transmission Leak
coleman
Jun 15, 2013
Replies
0
Views
684
Jun 15, 2013
coleman
C
4
Rocker arm ratio?
400Magnum
Apr 11, 2012
Replies
0
Views
795
Apr 11, 2012
400Magnum
4
M
Timing Advance and P0014
MMechura
Feb 1, 2013
Replies
0
Views
809
Feb 1, 2013
MMechura
M
Hot Rod Garage built a turbo 4200
limequat
Nov 18, 2019
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0
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1K
Nov 18, 2019
limequat
0
air intake tube size
06_GATOR_VOY
Jul 16, 2013
Replies
0
Views
587
Jul 16, 2013
06_GATOR_VOY
0
MPGs down the toilet
Envoy_04
Jul 16, 2013
Replies
0
Views
887
Jul 16, 2013
Envoy_04
Performing an Engine Swap in a 2007 Chevrolet Trailblazer
mrrsm
Aug 11, 2021
Replies
0
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3K
Aug 11, 2021
mrrsm
P1482 solved
eightshot627
Oct 1, 2016
Replies
0
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1K
Oct 1, 2016
eightshot627
P1133 with Headers rough high idle....I'm lost!
XUVFISCH
Apr 24, 2014
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0
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737
Apr 24, 2014
XUVFISCH
M
Trip from Charlotte to Ashville NC
million-miles
Aug 6, 2012
Replies
0
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754
Aug 6, 2012
million-miles
M
Installed new parts
Envoy_04
Oct 17, 2013
Replies
0
Views
777
Oct 17, 2013
Envoy_04
W
Trailblazer 4.2 I6 EVAP Line/Valve/Solenoid - Vacuum Stuff
webdawg
Jan 27, 2016
Replies
0
Views
2K
Jan 27, 2016
webdawg
W
Selling my tuned 04 PCM anyone interested?
ConeKilrAutoX
Mar 4, 2013
Replies
0
Views
670
Mar 4, 2013
ConeKilrAutoX
T
Hard Start Followed by Shifting Problems
TrailBlaz05
May 11, 2021
Replies
0
Views
547
May 11, 2021
TrailBlaz05
T
Coolant Leak?
no1uno
Apr 30, 2012
Replies
0
Views
1K
Apr 30, 2012
no1uno
Car Stalls at the same place everyday only in mornings
Axel
Feb 26, 2023
Replies
0
Views
523
Feb 26, 2023
Axel
B
Revised procedure for replacing motor mounts.
bugeyed
Sep 24, 2012
Replies
0
Views
879
Sep 24, 2012
bugeyed
B
Adding PCV?
groundshock
Dec 23, 2011
Replies
0
Views
1K
Dec 23, 2011
groundshock
oil filter access door
Tofer76
Aug 27, 2013
Replies
0
Views
683
Aug 27, 2013
Tofer76
2002 TB running great
movietvet
Apr 17, 2024
Replies
0
Views
79
Apr 17, 2024
movietvet
I
SW headers with exhaust
infamouz
Feb 6, 2012
Replies
0
Views
995
Feb 6, 2012
infamouz
I
M
PCM of NC Labor Day Sale
marshall@pcm
Sep 6, 2012
Replies
0
Views
632
Sep 6, 2012
marshall@pcm
M
Wating.........
borretje
Mar 7, 2012
Replies
0
Views
771
Mar 7, 2012
borretje
Cold start up noise
wehowardjr
Feb 22, 2015
Replies
0
Views
1K
Feb 22, 2015
wehowardjr
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Engine & Drivetrain
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