Search
Everywhere
Threads
This forum
Search titles only
By:
Everywhere
Threads
This forum
Search titles only
By:
Forums
Search forums
What's New?
New Posts
Latest activity
Latest activity
Members
Registered members
Current visitors
Site Rules
Cookie Policy
Privacy Policy
Donate
Forums
Log in
Register
Search
Everywhere
Threads
This forum
Search titles only
By:
Everywhere
Threads
This forum
Search titles only
By:
Search forums
Log in
Register
Menu
Install the app
Install
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Forums
TrailBlazer, Envoy, 9-7x, Ascender, Rainer, & Bravada
Engine & Drivetrain
Vortec 4.2L I-6
1
2
3
…
Go to page
Go
85
Next
1 of 85
Go to page
Go
Next
Last
Sort by:
Title
Ascending
Filters
Show only:
Loading…
Sticky threads
Sticky
4.2L (LL8) DTC Engine Diagnostic Parameters
Mooseman
Oct 7, 2019
Replies
3
Views
6K
Oct 7, 2019
TJBaker57
Locked
Sticky
FAQ: Vortec 4.2L I-6
Mooseman
May 1, 2017
Replies
1
Views
16K
Nov 13, 2020
Mooseman
Normal threads
"knocking" my head...
BVEN
Sep 26, 2015
Replies
6
Views
1K
Sep 28, 2015
Mike w
R
"New" (to me) 02' Envoy and I have a cylinder 2 misfire?!?
robbiegreene508
Jul 20, 2015
Replies
8
Views
1K
Aug 13, 2015
Mark20
M
"Shudder" at idle
mcc
May 5, 2013
Replies
18
Views
2K
Sep 9, 2013
mcc
M
"The GM Vortec LL8 Links and Specs Library"
mrrsm
Feb 24, 2017
Replies
3
Views
16K
Apr 10, 2018
ToddTNP
N
"Tinny" noise while running and after shutoff? (Video)
Nimunik
Sep 15, 2014
Replies
7
Views
1K
Sep 15, 2014
IllogicTC
T
NEED HELP
"Top End Soak" ... question
TequilaWarrior
Apr 29, 2022
Replies
11
Views
6K
May 3, 2022
TollKeeper
C
#2 cylinder Wet
Cooztwo
May 17, 2012
Replies
22
Views
2K
Sep 12, 2012
Cooztwo
C
#5 misfiring again, now also under acceleration.
DenaliHD66
Nov 7, 2013
Replies
21
Views
2K
Nov 27, 2013
DenaliHD66
0
'02 Trailblazer VERY rough after warmup (OK while still cold)
02TBLTZ
Feb 17, 2014
Replies
5
Views
1K
Feb 23, 2014
mrwitty_1
S
'03 occasionally runs rough
signalnc
Mar 15, 2015
Replies
7
Views
950
Mar 15, 2015
triz
'05 GMC ENVOY TPS throttle issues
manoftheearth
Dec 21, 2022
2
Replies
57
Views
4K
Jan 18, 2023
manoftheearth
'05 TB 4.2L Coolant leak on R/H side behind wheel well
xz5cgb
Aug 25, 2014
Replies
12
Views
16K
May 2, 2018
Alec Venable
'06 4.2 swap into an '05
Regulator
Mar 28, 2017
Replies
5
Views
2K
Mar 30, 2017
limequat
'06 4.2L-Filthy oil inside air plenum.
stvrob
Jan 19, 2016
Replies
38
Views
25K
Dec 26, 2021
59840Surfer
R
'06 engine ring/bearing/valve job
rchalmers3
Jul 25, 2020
2
Replies
53
Views
6K
Nov 24, 2020
rchalmers3
R
'07+ Cams
DenaliHD66
Dec 7, 2011
Replies
3
Views
1K
Dec 7, 2011
fishsticks
G
(fixed) Engine whine I cannot pin down - definitely related to serpentine belt
gladesteen
Aug 9, 2017
Replies
19
Views
3K
Aug 29, 2019
Brian K
B
(the dreaded) P0171 and evap system test never passes
6stringbass
Jan 16, 2018
Replies
10
Views
3K
Jan 26, 2018
Reprise
-02 and -05 injectors
Harpo
Mar 29, 2014
Replies
5
Views
792
Mar 31, 2014
Harpo
02 no start now but no dash cluster 1st
GMfever
Aug 22, 2014
Replies
19
Views
6K
Aug 27, 2014
GMfever
1
02 Bravada dies on Interstate....Cause?
1968Case580CK
Nov 30, 2018
2
Replies
59
Views
7K
Jan 1, 2019
1968Case580CK
1
D
02 Envoy 4 wheel drive issue
Dave606
Aug 18, 2013
Replies
2
Views
696
Aug 18, 2013
Dave606
D
S
NEED HELP
02 Envoy cooling issues
Scooter72
Jun 20, 2023
Replies
7
Views
713
Jun 27, 2023
Scooter72
S
Y
02 Envoy died while driving "low oil pressure" wont re start
YoMatt12
Jan 24, 2012
Replies
7
Views
3K
Jan 24, 2012
YoMatt12
Y
J
NEED HELP
02 envoy rep
Jrob21
Jan 17, 2022
Replies
15
Views
2K
Jan 18, 2022
Mooseman
02 envoy xl alternator
GMfever
Jan 11, 2015
Replies
9
Views
1K
Jan 17, 2015
GMfever
02 Envoy, sluggish, horrible mileage
02blackenvoy
Oct 26, 2015
Replies
7
Views
2K
Nov 4, 2015
02blackenvoy
9
02 Envoy, update PCM with 2005+
98tsiawd
Apr 11, 2012
Replies
6
Views
2K
Apr 12, 2012
The_Roadie
J
02 Envoy/TB fan clutch difference???
jaguarjoe
Mar 15, 2013
Replies
1
Views
746
Mar 15, 2013
The_Roadie
M
02 EXT exhaust sounding louder, I think its time
moneypit
Jan 17, 2015
Replies
4
Views
800
Jan 18, 2015
moneypit
M
1
2
3
…
Go to page
Go
85
Next
1 of 85
Go to page
Go
Next
Last
You must log in or register to post here.
Forum Statistics
Threads
23,273
Posts
637,487
Members
18,472
Latest member
MissCrutcher
Members Online
Bluecorp
gmonly
azswiss
Convoy209
filthyfingers
wags69
benjaminblazer
BrianF
Share This Page
Share This Page
Share
Facebook
Reddit
Pinterest
Tumblr
WhatsApp
Email
Share
Link
Forums
TrailBlazer, Envoy, 9-7x, Ascender, Rainer, & Bravada
Engine & Drivetrain
Top
Bottom