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2002 - 2009 TrailBlazer/Envoy Tech
02-09 Vortec 4.2L I-6 Engine and Drivetrain
Engine Tunes/Mods
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C
Knock sensor code T/S
cferg33
Jan 29, 2009
8
11K
16 d ago
by
Monkey332
M
P0300 2003 TB After Cam Sensor, Cam Solenoid and Thermostat Change
mgloveraero
Jan 1, 2015
3
2K
1 mo ago
by
Mikef303
M
What else can be done when replacing a head gasket?
MLaFeir
2 mo ago
6
268
1 mo ago
by
2005AscenderXUV
J
4.2L Turbo Kit?
Joe_2915
Jul 11, 2009
2
34
65K
1 mo ago
by
Mbigham967
R
oil catch can?
ryanlt81
May 22, 2010
2
3
41
22K
2 mo ago
by
Dustinmccall
M
02 Fuel pump not 'humming' when ignition is turned on
mikejenner972
8 mo ago
3
4
5
94
3K
4 mo ago
by
mikejenner972
T
2004 TB, 6-cyl. occasional miss
tpeace
4 mo ago
2
370
4 mo ago
by
goofy173
L
Oil galleys for pressure sensor, turbo feed
limequat
Oct 20, 2010
10
4K
5 mo ago
by
mike61974
S
P0300 code killing me
S_Dustin
Nov 29, 2015
7
7K
5 mo ago
by
chem_man
J
Code will not go away!! HELP!
jeffc0614
Aug 28, 2009
7
2K
5 mo ago
by
cheneil43
Replace TPS (throttle position sensor)
ReconDrill
Oct 26, 2009
7
52K
5 mo ago
by
Uncle jokes
W
Vortec 4200 Injector location/Replacement
wemiller53
Mar 6, 2011
9
19K
6 mo ago
by
TigerMike1
L
Enigne wiring 4.2l
[email protected]
6 mo ago
2
247
6 mo ago
by
[email protected]
R
HELP! P0300 after engine swap
rvloera
Sep 27, 2018
4
1K
7 mo ago
by
autonoob
Gas Mileage improvements!!
Zero
May 4, 2009
2
3
4
73
46K
8 mo ago
by
Ravalli Surfer
K
Rough shut down
Kylep
Jun 12, 2019
11
2K
8 mo ago
by
Vega_TB
B
05 Trailblazer I6 engine oil leak
billwhitehouse
Feb 28, 2019
1
819
9 mo ago
by
mike61974
S
[SOLVED]
Envoy falls on its face.
Search
Jan 8, 2010
18
4K
9 mo ago
by
Redline32
S
Swap 08 2WD Body to 08 4WD Frame
stmiked
9 mo ago
0
227
9 mo ago
by
stmiked
Swapping out 4.2 for 4.2 and gears question
BlueC7
9 mo ago
0
302
9 mo ago
by
BlueC7
B
Another p0171 thread
Black00Z28
10 mo ago
1
229
10 mo ago
by
Black00Z28
another P0300 thread
losthawaiian
10 mo ago
5
471
10 mo ago
by
Ravalli Surfer
T
DTC P0300 Random Misfire
tmcat
Feb 28, 2010
2
26
55K
11 mo ago
by
Rramshur
0
CAM SWAP
06naenali
11 mo ago
0
462
11 mo ago
by
06naenali
L
Fuel smell when parked in garage
Lynchy
Feb 13, 2019
1
728
12 mo ago
by
j00163206
K
After market motor mounts
Kylep
Jun 18, 2019
1
970
12 mo ago
by
j00163206
What weight oil do you use?
JBMallory
Mar 2, 2010
15
93K
Jan 21, 2020
by
wayward one
Can any tuner with efi live tune P10 PCM for turbo?
mylove2u21
Jun 23, 2012
3
2K
Jan 3, 2020
by
lw12067681
R
trailblazer LS 5.3 to lq4 swap
redLSblazer
Oct 25, 2016
2
3K
Jan 2, 2020
by
HotRods442
Valve cover gasket job?
Josh2015
Aug 26, 2015
6
5K
Nov 27, 2019
by
miketexas
H
tuneup
harrygm
Apr 7, 2019
16
3K
Oct 24, 2019
by
EvFoSheazy
M
4.2 6 engine issues ??
Mario2k4
Oct 6, 2019
0
954
Oct 6, 2019
by
Mario2k4
05 pcm ecm
dh4645
Sep 14, 2019
4
880
Sep 24, 2019
by
dh4645
J
Engine Knocking or Noise
jacksonvill
Oct 5, 2017
1
1K
Sep 12, 2019
by
LSXHP
B
turbo manifold
bhearts77
Apr 9, 2018
2
2K
Sep 11, 2019
by
B_rock
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Engine Tunes/Mods
Performance Engine Tuning/Engine Modifications
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02-09 Vortec 4.2L I-6 Engine and Drivetrain
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