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Forums
TrailBlazer, Envoy, 9-7x, Ascender, Rainer, & Bravada
Engine & Drivetrain
Repairs, tuning, modifications, & maintenance.
Vortec 4.2L I-6
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2.5K
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38.9K
R
Only 3000 miles on oil, but One year old. Change filter too?
Tuesday at 4:41 PM
Redbeard
Drivetrain
New
1.1K
13.3K
Threads
1.1K
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13.3K
NEED HELP
Tranny slipping and surging. 4WD switch flashing
Apr 4, 2024
filthyfingers
Vortec 5.3L V8
New
393
5.2K
Threads
393
Posts
5.2K
Rate this Used Airfilter
Tuesday at 12:20 PM
christo829
LS2 6.0L V8
40
839
Threads
40
Posts
839
H
Cylinder 6 Misfire Mystery
Nov 20, 2023
highlander
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C
Envoy lurches slightly forward when in Park and starting.
c good
Dec 28, 2022
Replies
7
Views
613
Dec 29, 2022
Mooseman
New here and new 2002 TB to me
movietvet
Dec 21, 2022
Replies
12
Views
772
Dec 27, 2022
movietvet
R
Oil pressure from 0 to 50 until engine warmed 06 Enovy 135k miles
Robmoo
Dec 21, 2022
Replies
5
Views
642
Dec 23, 2022
Mooseman
Clutch or Bearing Noise? - Getting Bad
psa55
Dec 16, 2022
Replies
7
Views
1K
Jul 4, 2023
psa55
S
Rough Idle | No Codes
Scry0402
Dec 15, 2022
Replies
3
Views
910
Dec 15, 2022
Scry0402
S
SOLVED!
Ringing whistle? HVAC disruption during servicing? Or?
Elizabetty
Dec 6, 2022
Replies
36
Views
2K
Jan 10, 2023
Mooseman
P
Throttle Position %?
PLAT515
Nov 26, 2022
Replies
27
Views
2K
Dec 3, 2022
PLAT515
P
C
Fluid Service interval for Transfer case?
c good
Nov 13, 2022
Replies
3
Views
463
Nov 14, 2022
c good
C
S
Purely mechanical oem fan clutch on 2008 TB?
sashainwy
Nov 7, 2022
Replies
16
Views
1K
May 2, 2023
sashainwy
S
That buttery smooth engine after an oil change never lasts
l008com
Nov 4, 2022
Replies
9
Views
1K
Nov 18, 2022
l008com
Need Recommendations for Shop to do Engine Swap
5tjss
Oct 27, 2022
Replies
5
Views
555
Oct 27, 2022
5tjss
Rough Idle
Miked
Oct 23, 2022
Replies
5
Views
801
Oct 26, 2022
TequilaWarrior
T
B
2004 envoy 4.2 engine lost oil
Ben4.2
Oct 19, 2022
Replies
2
Views
490
Oct 20, 2022
Ben4.2
B
C
Yellow Dip Stick Dilemma
c good
Oct 13, 2022
Replies
6
Views
748
Oct 16, 2022
c good
C
C
Berryman's Soak number two. Thinking about adding some aeration?
c good
Oct 12, 2022
Replies
3
Views
484
Oct 15, 2022
gmcman
C
Adding ATF to oil....how much and for how many miles?
c good
Oct 11, 2022
Replies
3
Views
575
Oct 13, 2022
Mooseman
X
NEED HELP
AC / Heater Blower working intermittently with dash lights
Xodus989
Oct 5, 2022
Replies
9
Views
827
Oct 9, 2022
Xodus989
X
C
Would you put in a new Fuel Pump if it's never been replaced at 190 K miles?
c good
Oct 2, 2022
Replies
5
Views
671
Oct 5, 2022
gmcman
P
Frustration
Phill
Sep 17, 2022
Replies
1
Views
674
Sep 17, 2022
mrrsm
Cleaning Air Box?
Ilikemy3s
Sep 13, 2022
Replies
1
Views
533
Sep 13, 2022
Mooseman
C
Replacement muffler. Possible performance increases? Recommendations please.
c good
Sep 9, 2022
Replies
3
Views
657
Sep 12, 2022
Mike534x
Amsoil power foam ?
Ilikemy3s
Sep 9, 2022
Replies
4
Views
676
Sep 9, 2022
Mike534x
H
NEED HELP
4WD not working
HoldenEst
Sep 9, 2022
Replies
4
Views
471
Sep 10, 2022
Mooseman
Question about CV axle angle
flyboy2610
Sep 6, 2022
Replies
4
Views
588
Sep 7, 2022
flyboy2610
Thoughts about the 2022 2.7L turbo + 8-speed transmission Silverado?
6716
Sep 3, 2022
Replies
10
Views
6K
Sep 7, 2022
Mike534x
F
C.V. Axle Seal Part Question
FlyFish3rman
Aug 29, 2022
Replies
16
Views
2K
Sep 9, 2022
FlyFish3rman
F
NEED HELP
P1221 Only with A/C on
Ric_Whit
Aug 19, 2022
Replies
8
Views
1K
Aug 20, 2022
mrrsm
NEED HELP
Overheating issue with AC ON!
ghost_leader07
Aug 17, 2022
2
Replies
49
Views
3K
Aug 23, 2022
ghost_leader07
Gas tank extraction pump recommendations?
JayArr
Aug 13, 2022
Replies
15
Views
1K
Oct 8, 2022
Mooseman
B
Port-matching 4.2 head
Bob Stockum
Jul 29, 2022
Replies
7
Views
763
Jul 30, 2022
efi-diy
E
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