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2002 - 2009 TrailBlazer/Envoy Tech
02-09 Vortec 4.2L I-6 Engine and Drivetrain
OEM Issues
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Sticky
Poor A/C at idle
Jman423
Jun 18, 2005
20
21
22
421
217K
6 mo ago
by
Dieseldog
F
2002 Blower reistor module #52494707
fixrguy0901
Nov 28, 2016
17
5K
1 d ago
by
josepherbert
4wd Issues....or maybe not
TravisG
6 d ago
14
333
2 d ago
by
TravisG
Signal switch,wipers won't work
AlexVarley
3 d ago
1
73
3 d ago
by
TJBaker
T
06 TB EXT LT problem
to sexy for his blazer
1 mo ago
2
32
1K
7 d ago
by
Ravalli Surfer
V
How to replace the starter
vandelay
May 5, 2010
2
24
91K
7 d ago
by
Grodo
L
Exhaust leak, bolts backed out?! Reuse gasket?
lukeclement
16 d ago
1
135
8 d ago
by
Ravalli Surfer
P
p2123, p2128 after fuel pump replaced
paklya2
Oct 28, 2014
5
3K
8 d ago
by
chem_man
What hose is this and what would it do to my TB if disconnected like this?
dh4645
Jan 31, 2020
5
950
9 d ago
by
MD TBlazer
T
Weird Left Turn Signal Problem
tbss_darkout23
19 d ago
2
128
16 d ago
by
MD TBlazer
R
Oil Leak from the engine plastic top cover and oil recomendations
rolo95
24 d ago
2
32
1K
17 d ago
by
pdcomm
C
Ongoing oil pressure issue and pickup bolt question.
chuey_316
17 d ago
0
114
17 d ago
by
chuey_316
Loud humming underneath truck
Ayden_07TB
23 d ago
10
428
18 d ago
by
dakota
M
RPM surges up and down and car jerks while driving
melissar1965
Aug 6, 2012
4
5K
18 d ago
by
Bmott81
Rear Diff Cover Help
AC75TB07
21 d ago
6
178
18 d ago
by
flyboy2610
R
Oil Consumption on the 4.2
Reactant
29 d ago
2
20
574
20 d ago
by
Reactant
O
Overdrive Slipped
Ock
9 mo ago
7
366
20 d ago
by
Ock
Stupid Rusted Spare Tire Frame & Mystery Black Box...
AC75TB07
23 d ago
4
441
23 d ago
by
Reactant
P
tachometer needle not showing correct rpms
philosophical
Jun 7, 2009
8
2K
24 d ago
by
SparksLP
A
Whining noise at start-up
akcrx
Mar 10, 2008
18
11K
25 d ago
by
Trailblazer Justin
Hard start after refueling
-MACH-
Apr 22, 2009
2
30
50K
28 d ago
by
Swobecky
05 Trailblazer P0300 p0340 problem
Cmetz13
1 mo ago
2
23
671
1 mo ago
by
MD TBlazer
T
04 envoy rough idle and stall problem
ttetaylor
Jul 2, 2010
2
21
43K
1 mo ago
by
john anon
C
Liftgate control module problem
cowdogcadillac
Dec 20, 2011
2
2K
1 mo ago
by
Ravalli Surfer
W
[SOLVED]
P0411 Code
woody79
Oct 27, 2011
2
31
54K
1 mo ago
by
mviuf
O
05 Trailblazer- Rough Running engine after replacing #6 injector
Osorio14
Feb 14, 2012
4
2K
1 mo ago
by
Schaf
Fuel Pressure Regulator and Vaccuum Line
Coach Steve
Jan 28, 2008
2
24
44K
1 mo ago
by
chem_man
S
05 GMC Envoy 4.2 I6 codes (P231 & P0410)
sxngrey
1 mo ago
1
143
1 mo ago
by
chem_man
[SOLVED]
Bad vibration in gear at idle solved by new motor mounts
the roadie
May 9, 2010
2
3
4
76
76K
1 mo ago
by
Vega_TB
C
Intermittent stall at idle.
clanbree
Sep 26, 2015
12
8K
1 mo ago
by
DakotaLC
Noise from under cam cover...
glfredrick
Aug 30, 2013
3
7K
1 mo ago
by
Morgstevenson
U
2006 4.2 Thermostat location?
unioncreek
2 mo ago
4
195
2 mo ago
by
EnvoyBoy2004
T
2007 Envoy P0303/P0300 codes at high way speeds.
tgering95
2 mo ago
1
116
2 mo ago
by
chem_man
R
Camshaft Position Sensor
robinga2
Apr 17, 2007
14
41K
2 mo ago
by
chem_man
M
Noisy engine + P0105 code: What could it be?
MileHighTy
2 mo ago
10
289
2 mo ago
by
chem_man
R
Mis Fire
rtbright
Apr 11, 2011
9
1K
2 mo ago
by
MrBuster
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OEM Issues
Original Equipment Repairs and/or Problems
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Ravalli Surfer
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Reactant
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02-09 Vortec 4.2L I-6 Engine and Drivetrain
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