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Forums
TrailBlazer, Envoy, 9-7x, Ascender, Rainer, & Bravada
Engine & Drivetrain
Vortec 4.2L I-6
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alternator??
jrSS
Dec 16, 2011
Replies
5
Views
2K
Dec 19, 2011
Arock
Surging After Thermostat Replacement
UMEXT
Dec 16, 2011
Replies
4
Views
2K
Dec 17, 2011
The_Roadie
B
Odd Misfire Problem, Seeking Help
Bailey4200
Dec 16, 2011
Replies
7
Views
2K
Dec 22, 2011
Wooluf1952
S
Just had Tranny rebuilt now having electrical problems
sunnyTB
Dec 16, 2011
Replies
9
Views
1K
Dec 19, 2011
RayVoy
Why you may need to clean a 4.2L I6 Throttle Body
trailblazer075
Dec 17, 2011
2
Replies
41
Views
32K
Oct 1, 2013
bLAzen03
3.42 to 4.10 Differential Swap Question
mesaboogie
Dec 17, 2011
Replies
7
Views
3K
Dec 17, 2011
HARDTRAILZ
M
lights flickering and gauge erratic?
moneypit
Dec 18, 2011
Replies
9
Views
2K
Dec 19, 2011
moneypit
M
T
Part Number for 2007 I6 Thermostat
TB_n00b
Dec 19, 2011
Replies
9
Views
2K
Dec 19, 2011
Mark20
D
Tuning : Chips
Dozer22
Dec 19, 2011
Replies
14
Views
3K
Dec 21, 2011
marshall@pcm
M
M
Valve Cover Gasket
MichEnvoyGuy
Dec 19, 2011
Replies
2
Views
1K
Jul 22, 2014
hotwheeler69
M
HUGE Christmas Sale at PCMforless!!!
marshall@pcm
Dec 21, 2011
Replies
22
Views
2K
Jan 5, 2012
marshall@pcm
M
Adding PCV?
groundshock
Dec 23, 2011
Replies
0
Views
1K
Dec 23, 2011
groundshock
4.2L I6 starter issue/replacement?
ScarabEpic22
Dec 23, 2011
Replies
20
Views
2K
Jul 15, 2012
Regulator
My Hannukah Gift to Myself that Arrived on Christmas Eve :)
Pittdawg
Dec 24, 2011
2
Replies
44
Views
4K
Jun 29, 2012
Pittdawg
E
4200 - manual trans adapter
efi-diy
Dec 26, 2011
Replies
3
Views
8K
Dec 26, 2011
limequat
Ignition coil pack brand recommendation
Busterbrown
Dec 26, 2011
Replies
7
Views
3K
Dec 27, 2011
Pittdawg
plug change and tb cleaning
LordBear
Dec 26, 2011
Replies
5
Views
1K
Dec 27, 2011
Wooluf1952
M
Thermostat bad?
MichEnvoyGuy
Dec 29, 2011
2
Replies
64
Views
8K
Mar 11, 2013
Jayman
N
charging system
nbenjamin
Dec 29, 2011
Replies
9
Views
2K
Dec 29, 2011
nbenjamin
N
PCMFORLESS tune done!
fadyasha
Dec 29, 2011
Replies
25
Views
6K
Jan 5, 2012
marshall@pcm
M
Anyone know any vendors for custom intakes?
fadyasha
Dec 29, 2011
Replies
3
Views
976
Jan 9, 2012
fadyasha
E
2002 Trailblazer stalling - stumped on why
evoblazer
Dec 30, 2011
Replies
35
Views
8K
Jan 31, 2012
Gevans17
G
M
Mucho Grande Problem - T-stat bolt broke off in block!
MichEnvoyGuy
Dec 30, 2011
Replies
10
Views
1K
Dec 30, 2011
MichEnvoyGuy
M
B
CPAS and O2 Sensor help
berto1014
Dec 30, 2011
Replies
12
Views
2K
Jan 2, 2012
07Blazerman
Fuel Economy Just Got Worse
de3jr88
Dec 31, 2011
Replies
10
Views
2K
Jan 2, 2012
Chickenhawk
N
Stock Heater block temp
nbenjamin
Jan 3, 2012
Replies
15
Views
3K
Jan 22, 2012
nbenjamin
N
Security Relearn problem!
fadyasha
Jan 4, 2012
Replies
18
Views
3K
Apr 11, 2012
fadyasha
Maximizing 4.2 performance
smitty5150
Jan 4, 2012
Replies
28
Views
86K
Jan 26, 2019
Capote
Headlamp washer motor? is this it?
fadyasha
Jan 7, 2012
Replies
24
Views
6K
Jan 9, 2012
Harpo
N
scangauge2
nbenjamin
Jan 7, 2012
Replies
4
Views
1K
Jan 9, 2012
AbsoluteZero
A
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TrailBlazer, Envoy, 9-7x, Ascender, Rainer, & Bravada
Engine & Drivetrain
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