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TrailBlazer, Envoy, 9-7x, Ascender, Rainer, & Bravada
Engine & Drivetrain
Vortec 4.2L I-6
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B
What is stock exhaust size on the i6?
blackout51
Oct 21, 2012
Replies
16
Views
16K
Oct 23, 2012
Cable810
R
Surprise with throttle body
ryan
Sep 7, 2012
Replies
10
Views
2K
Oct 22, 2012
McGMT
M
M
PCM 1-piece intake
marshall@pcm
Oct 12, 2012
Replies
7
Views
1K
Oct 20, 2012
Slow_Sc3
S
P
Need a few pointers on p1271/p1275
plaen
Sep 10, 2012
Replies
5
Views
3K
Oct 20, 2012
kyle931
K
M
Lumpy Closed Loop Performance
McGMT
Oct 20, 2012
Replies
2
Views
804
Oct 20, 2012
McGMT
M
F
Help removing oil pan, what am I doing wrong?
fferd
Oct 19, 2012
Replies
10
Views
21K
Oct 19, 2012
fferd
F
Y
Header Options
Yacdogg
May 13, 2012
Replies
5
Views
2K
Oct 19, 2012
novajoe
N
N
Poll
4.2L I6 Headers
novajoe
Oct 9, 2012
Replies
18
Views
3K
Oct 19, 2012
novajoe
N
Poll
New Header Poll
limequat
Oct 15, 2012
Replies
4
Views
910
Oct 19, 2012
novajoe
N
Water pump blew - about 90 miles from home
mubai
Oct 18, 2012
Replies
4
Views
969
Oct 18, 2012
mubai
Vibrations in the front end
Ghost
Oct 15, 2012
Replies
6
Views
955
Oct 18, 2012
Ghost
A
gas in air resonator
akvanden
Oct 13, 2012
Replies
7
Views
2K
Oct 17, 2012
Sparky
smell and MPGS :(
bigytwotone
Oct 6, 2012
Replies
22
Views
2K
Oct 17, 2012
framedforlife
F
Tip or Tricks for Removing front differential oil fill plug?!?!?!
rgoldberg
Oct 14, 2012
Replies
10
Views
2K
Oct 17, 2012
Sparky
Help for a Newb: Changing Oil
Border Walker
Oct 15, 2012
Replies
19
Views
2K
Oct 16, 2012
navigator
A
E Fans running hot
andy702252
Aug 12, 2012
Replies
24
Views
4K
Oct 16, 2012
Scott750
V
P0171 code won't go away. Terrible gas mileage
vizions
Oct 13, 2012
Replies
14
Views
7K
Oct 15, 2012
vizions
V
M
Unsolved EVAP 0442 Small Leak
McGMT
Sep 27, 2012
Replies
23
Views
3K
Oct 15, 2012
xj2202009
X
C
hptuners
cmatb08
Oct 14, 2012
Replies
15
Views
2K
Oct 15, 2012
deekster_caddy
D
Strange alternator issue
gmcman
Oct 13, 2012
Replies
6
Views
1K
Oct 14, 2012
gmcman
MPGS and Skyrocketing Gas Prices
Pittdawg
Oct 11, 2012
Replies
19
Views
2K
Oct 14, 2012
Pittdawg
T
How to tell if the O2 sensors need replacing?
TonyT
Oct 5, 2012
Replies
14
Views
2K
Oct 13, 2012
TonyT
T
Coolant flush procedure??
Wyle
Feb 10, 2012
Replies
11
Views
6K
Oct 13, 2012
deepblue
T
Belt tensioner frozen???
TrailblazerLT
Oct 2, 2012
Replies
18
Views
5K
Oct 11, 2012
meerschm
I got dyno-tuned!!!
mikeinDE
Oct 9, 2012
Replies
15
Views
2K
Oct 10, 2012
mikeinDE
B
Does anyone see any benefit to removing motor mount bracket?
bugeyed
Sep 26, 2012
Replies
3
Views
1K
Oct 10, 2012
jeffro312
whats this sensor?????
AV8ER
Oct 9, 2012
Replies
7
Views
1K
Oct 10, 2012
limequat
T
Exhaust manifold heat shield! Please HELP!!!
TrailblazerLT
Oct 9, 2012
Replies
7
Views
1K
Oct 9, 2012
TrailblazerLT
T
Tune and Premium Fuel
HARDTRAILZ
Aug 30, 2012
Replies
12
Views
2K
Oct 8, 2012
jimmyjam
Fluttering Butterfly or TCC?
Dad-O-Matic
Aug 8, 2012
Replies
16
Views
2K
Oct 8, 2012
Dad-O-Matic
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Engine & Drivetrain
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