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TrailBlazer, Envoy, 9-7x, Ascender, Rainer, & Bravada
Engine & Drivetrain
Vortec 4.2L I-6
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C
Head removal
Catriderf7
Sep 16, 2014
2
3
Replies
118
Views
8K
Apr 23, 2015
Mooseman
Coolant temp sensor replacement
gmcman
Jan 31, 2012
Replies
13
Views
8K
Feb 12, 2012
KNBlazer
NEED HELP
Brake Booster Valve Check
AzTruckGuy
Jun 30, 2016
Replies
13
Views
8K
Jul 4, 2016
therealsethallen
NEED HELP
Engine bogs under throttle
LT1transAM
Apr 1, 2017
Replies
30
Views
8K
Apr 24, 2017
LT1transAM
0
Thermostat P0128
04Trailblazer
Feb 27, 2012
Replies
7
Views
8K
Feb 27, 2012
blazinlow89
E
2002 Trailblazer stalling - stumped on why
evoblazer
Dec 30, 2011
Replies
35
Views
8K
Jan 31, 2012
Gevans17
G
N
Fuel Injector swap go bigger or smaller??
nfsroadsta2786
Sep 30, 2013
Replies
28
Views
8K
Oct 1, 2013
Shdwdrgn
Coolant Flush
RTTBLT1
Apr 18, 2016
2
Replies
58
Views
8K
Jun 28, 2016
RTTBLT1
A
PCMFORLESS NEW E-Fan Setup and PCMFORLESS INTAKE
andy702252
Mar 26, 2012
2
3
Replies
80
Views
8K
Apr 30, 2012
limequat
Green Filter Experience
HARDTRAILZ
Nov 28, 2011
2
Replies
62
Views
8K
Oct 17, 2013
Grimor
F
Dreaded Knocking Noise 2008 GMC Envoy 4.2L I6 220k miles
Furious92
Oct 14, 2021
Replies
20
Views
8K
Oct 25, 2021
Furious92
F
Water pump recommendation and bolt part number?
Dshow
Dec 19, 2016
Replies
8
Views
8K
Dec 28, 2016
webdawg
W
Solved
SOLVED!
Engine Bay Noises - Water Pump, bearings, lifters?
Blckshdw
Apr 24, 2019
Replies
15
Views
8K
Apr 28, 2019
mrrsm
Swapping in Ported Heads
Pittdawg
Oct 3, 2012
2
Replies
58
Views
8K
Dec 1, 2012
limequat
E
P0014 and P1345... please look
evoblazer
Dec 7, 2011
Replies
35
Views
8K
Feb 8, 2012
Ztryfe
Z
Synthetic oil question and oil change intervals?
Darkrider_LS
Jul 7, 2013
2
3
Replies
104
Views
8K
May 19, 2014
bspurloc
B
M
Thermostat bad?
MichEnvoyGuy
Dec 29, 2011
2
Replies
64
Views
8K
Mar 11, 2013
Jayman
B
Intake manifold bolts
BrownHP800
Dec 11, 2016
Replies
5
Views
8K
Dec 15, 2016
webdawg
W
D
Secondary Air injection Solenoid BYPASS
DirtinLa
Jan 28, 2017
Replies
15
Views
8K
Feb 6, 2017
AtlWrk
Hard start and rough shut down
Mike534x
Sep 27, 2014
Replies
15
Views
8K
Oct 21, 2014
KNBlazer
A
Loss of oil pressure at idle
adlegs
Dec 11, 2011
Replies
9
Views
8K
Dec 30, 2011
RayVoy
M
Oil pressure sensor
mlan12
Mar 30, 2015
Replies
18
Views
7K
May 19, 2015
gmc4flash
G
J
Codes P0128 and P420
JayWildChevy
Jan 24, 2015
Replies
9
Views
7K
Jun 25, 2018
Zapp Brannigan
Z
NEED HELP
05 Trailblazer Fuel Gauge Problem. Bad PCM?
Zmoney
Jun 4, 2021
2
3
Replies
85
Views
7K
Sep 8, 2021
Mramses
M
R
2008 Trailblazer Atlas Engine Noise
Red955i
Sep 10, 2020
2
Replies
62
Views
7K
Sep 28, 2020
Red955i
R
L
Spark Plug
logepoge1
Apr 26, 2014
Replies
26
Views
7K
May 12, 2014
logepoge1
L
Sea foam?
fishguy1123
Dec 7, 2011
2
Replies
41
Views
7K
Feb 1, 2012
khill
NEED HELP
2002 Chevy Trailblazer no crank
BlueDazing
Mar 22, 2023
2
3
4
Replies
158
Views
7K
Oct 27, 2023
TJBaker57
J
It all started when I changed a plug
jekern1015
Feb 2, 2014
Replies
35
Views
7K
Feb 19, 2014
Texan
J
Tips on 1st Thermostat replacement on Inline-6
jhenry999
Aug 8, 2015
Replies
38
Views
7K
Dec 8, 2018
Stuntmanmike77
S
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Engine & Drivetrain
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