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02-09 Vortec 4.2L I-6 Engine and Drivetrain

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OEM Issues

Original Equipment Repairs and/or Problems
69.6K
43M
69.6K
43M

Air Induction

Performance Air Intake/Air Induction Modifications
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4.4M
11.7K
4.4M

Exhaust Mods

Performance Exhaust Modifications
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4.2M
12K
4.2M

Engine Tunes/Mods

Performance Engine Tuning/Engine Modifications
21.3K
9.7M
21.3K
9.7M

Transmission Mods

Performance Transmission Modifications
8.5K
5.1M
8.5K
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4x4 Drivetrain

4x4 Repairs & Problems
15.7K
9.3M
15.7K
9.3M
Jman423
Sticky = = = New threads may not be posted in this catagory, please select a sub-forum = = =
0
20K
 by Jman423
Cdavis71
Engine Miss fire Problems
3
86
 by Cdavis71
AC75TB07
Starting Issue, Key Stuck in Ignition!
7
98
 by Ravalli Surfer
Ravalli Surfer
Ripped-off Oil Drain Plug?
5
177
 by Rrs1021
F
P0121 throttle/pedal position sensor
1
92
 by chem_man
Dmitry
Traction control issure
10
348
 by Dmitry
Dustinmccall
Need help!!!! Ls swap my 4.2 to a 5.3
3
217
 by yeagamyster04
O
Is my abs pump full of air?
4
87
 by Ravalli Surfer
magicexp
4 low doesn't work
6
151
 by Ravalli Surfer
T
Rough bearing noise from front left. HELP ROADIE!
4
168
 by Thalwandi27
02tbi6
2004 Chevy trailblazer 2wd lt P0016 code PLEASE HELP ASAP !
3 4 5
88
2K
 by Clydebman
garyvest13
No start
2
20
328
 by chem_man
B
2005 4.2l engine swap into a 2006 model issues!!
3
724
 by altanvid
K
05 envoy 4.2 alternator high voltage.
9
340
 by SteveJL
Meigs2134
4wd issues
7
231
 by SteveJL
N
Repeated Security mode
2
116
 by TJBaker
K
05 envoy xl 4.2 rpm up and down
4
157
 by Cam TB
A
Knocking noise coming from engine
2
22
950
 by Guurrrl
K
05 envoy won’t start after battery died
3
190
 by chem_man
sadety85
Rod bearing
5
139
 by Ravalli Surfer
M
Poll ... How many miles do you have on your trailblazer?
2 3
54
6K
 by pdcomm
K
Car Only Starts on Second Crank
2
26
1K
 by kstripe
S
P0411, The voltage range reading of the sensor & the PID on the Torque APP
13
651
 by samiceng
E
Transmission leaks
1
114
 by Ravalli Surfer
Envoy_08
Runs rough when starting in cold weather
6
258
 by Ravalli Surfer
gladesteen
mods please delete
0
154
 by gladesteen
518js97
Stalling/Sputtering when coming to a stop.
4
318
 by Schurkey
D
Engine Surge When A/C Turned On
5
221
 by 2002 TB LS
garrettbowman
What rearend gear ratio do I have?
14
31K
 by john anon
R
02-05 TB 4.2L in 06-07 4wd TB LS(engine swap)
0
131
 by Richardpotatoes
J
P1516 p2101 p0102
3
945
 by robertcherryiii
P
New Member Here 2004 Chevy Trailblazer LS
6
326
 by Steve 33
J
TB/Envoy 2002-2003 full diagrams available
2
26
6K
 by TJBaker
JL08trailblazer
DEAD BATTERY AFTER HEARING SOMETHING ON AFTER SHUT OFF!!
7
412
 by mikejenner972
chrischapp1147
07 trailblazer 4.2 inline6 engine swap/ replacement
1
247
 by sw904
J
4.2 to 5.3 or 6.0 engine swap
8
23K
 by Ls Baker
02-09 Vortec 4.2L I-6 Engine and Drivetrain
Q&A forum for engine and drivetrain repairs/modifications/tuning.
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