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2002 - 2009 TrailBlazer/Envoy Tech
02-09 Vortec 5.3L V8 Engine and Drivetrain
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OEM Issues
Original Equipment Repairs and/or Problems
8.4K
6.8M
Mar 7, 2024
8.4K
6.8M
Mar 7, 2024
Air Induction
Performance Air Intake/Air Induction Modifications
827
693K
Jun 22, 2023
827
693K
Jun 22, 2023
Exhaust Mods
Performance Exhaust Modifications
1.2K
2.3M
Jan 17, 2024
1.2K
2.3M
Jan 17, 2024
Engine Tunes/Mods
Performance Engine Tuning/Engine Modifications
3.2K
2.6M
Nov 3, 2023
3.2K
2.6M
Nov 3, 2023
Transmission Mods
Performance Transmission Modifications
801
820K
Sep 13, 2023
801
820K
Sep 13, 2023
4x4 Drivetrain
4x4 Repairs & Problems
2.9K
2.3M
Feb 27, 2024
2.9K
2.3M
Feb 27, 2024
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Jman423
Mar 5, 2008
Locked
0
12K
Mar 5, 2008
by
Jman423
Misfire issue
jameshr59
3d ago
1
38
3d ago
by
chem_man
5.3 new high oil pressure gauge reading
WYOVERLANDER
Feb 18, 2023
3
544
Mar 7, 2024
by
gilboy42
Transmission Filter and Fluid Change - 2004 Trailblazer LS EXT with 4.2L
SirTrailBlazer
Feb 19, 2024
29
2K
Mar 1, 2024
by
Ravalli Surfer
G
Have 05 GMC envoy Denali hesitant when put in drive and going forward over 25 mph front end vibrating
greycat6377
Feb 15, 2024
1
80
Feb 21, 2024
by
Ravalli Surfer
O
2008 GMC envoy Denali 5.3 tell me what all kinda mods y'all recommend
Omw2fkurbih
Dec 4, 2023
5
798
Dec 4, 2023
by
Ravalli Surfer
2004 Envoy transfer case issue?
No Monitor
Nov 29, 2023
5
547
Nov 29, 2023
by
Ravalli Surfer
G
2005 LH6 trailblazer lm7 swap
GabeRH
Oct 6, 2022
3
1K
Nov 4, 2023
by
Chuck81
What to upgrade on 4L60E for increased durability/reliability?
TheEnvoyMan
Jul 5, 2023
9
2K
Oct 19, 2023
by
PistolWhip
Checked Spark Plugs, Now it Won't Crank
l008com
Jul 20, 2023
18
876
Jul 25, 2023
by
chem_man
Need help removing passenger side head on 5.3
TheEnvoyMan
Apr 11, 2023
5
1K
Apr 12, 2023
by
Vega_TB
What is this?
Milinda
Apr 10, 2023
2
1K
Apr 11, 2023
by
Milinda
G
2007 Denali 5.3 -- 260K - about to replace trans cooler lines; what lifespan to expect from denali ?
GraphiteDenali
Mar 13, 2023
1
495
Mar 14, 2023
by
Mad Russian
07’ afm delete parts list
JM 07
Jan 23, 2023
21
3K
Mar 9, 2023
by
JM 07
Aluminum radiator/electric fan for 5.3 envoy denali HELP!
derekmaloney85
Feb 26, 2023
0
670
Feb 26, 2023
by
derekmaloney85
Transmission
Rebelmommaof3
Feb 14, 2023
15
934
Feb 15, 2023
by
Ravalli Surfer
M
06 Envoy Denali XL odd issues .. related?
merlinof2
Jan 19, 2023
2
579
Jan 19, 2023
by
merlinof2
4L60 to 4L65 upgrade
envoynali07
Jan 4, 2023
5
1K
Jan 5, 2023
by
Ravalli Surfer
T
2008 ENVOY DENALI 5.3 CAM POSITION SENSOR REPLACEMENT
tomkatohio
Dec 18, 2022
5
2K
Dec 22, 2022
by
Ravalli Surfer
Gear ratio?
06DenaliJosh
Sep 28, 2022
3
1K
Nov 14, 2022
by
Schurkey
Looking for pinout
musicjunkie1908
Oct 4, 2022
1
394
Oct 8, 2022
by
Vega_TB
Service Stabilitrack question
Sparkie's Mower Service
Aug 29, 2022
2
767
Aug 30, 2022
by
Sparkie's Mower Service
5
The Head Gasket Install has Gone Awry
5.3jus4me
Aug 22, 2022
47
3K
Aug 26, 2022
by
Ravalli Surfer
R
Timing cover question
RamElliot
Jun 22, 2022
23
2K
Aug 26, 2022
by
Ravalli Surfer
P0740 P0785 P1860
fastjjc
Jul 27, 2022
0
706
Jul 27, 2022
by
fastjjc
Vacuum port?
Ricstar59
Jul 18, 2022
0
533
Jul 18, 2022
by
Ricstar59
Odd transmission behavior: 2006 Envoy Denali
Steve T
May 17, 2022
7
2K
May 19, 2022
by
Steve T
B
5.3 Limp Mode issue (P060E and P0121)
bigbasec1
Apr 5, 2022
5
3K
Apr 6, 2022
by
bigbasec1
B
Opinions on tech2 knock off or Vcx nano or ?
Blazentpi
Mar 14, 2022
1
576
Mar 17, 2022
by
Schurkey
B
Clunking noise when shutting off vehicle or going into reverse.
bpglue
Feb 18, 2022
0
672
Feb 18, 2022
by
bpglue
Intermittent no start no crank
Clkish1988
Jan 28, 2022
4
1K
Feb 11, 2022
by
Supercharged111
AFM OIL BYPASS STICKING OPEN AFTER HIGH RPM PULLS W
blueblazer5_3
Jan 25, 2022
0
581
Jan 25, 2022
by
blueblazer5_3
AFM delete=no oil pressure
FamilymanGT
Dec 23, 2021
5
4K
Jan 25, 2022
by
Supercharged111
U
All dash lights on
uhlenhopp09
Dec 23, 2021
9
1K
Jan 20, 2022
by
Ravalli Surfer
Need help
Dustinmccall
Jan 16, 2022
1
840
Jan 20, 2022
by
yeagamyster04
Great buy or no go??
Justmy2¢
Jun 5, 2021
12
2K
Dec 18, 2021
by
cage47
1
2
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02-09 Vortec 5.3L V8 Engine and Drivetrain
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