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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
8.2K
5.9M
4 d ago
8.2K
5.9M
4 d ago
Air Induction
Performance Air Intake/Air Induction Modifications
826
634K
Aug 1, 2019
826
634K
Aug 1, 2019
Exhaust Mods
Performance Exhaust Modifications
1.2K
2.3M
2 mo ago
1.2K
2.3M
2 mo ago
Engine Tunes/Mods
Performance Engine Tuning/Engine Modifications
3.2K
2.3M
9 d ago
3.2K
2.3M
9 d ago
Transmission Mods
Performance Transmission Modifications
731
703K
14 d ago
731
703K
14 d ago
4x4 Drivetrain
4x4 Repairs & Problems
2.8K
2M
2 mo ago
2.8K
2M
2 mo ago
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Jman423
Mar 5, 2008
Locked
0
10K
Mar 5, 2008
by
Jman423
Odd transmission behavior: 2006 Envoy Denali
Steve T
4 h ago
1
22
20 m ago
by
Ravalli Surfer
B
5.3 Limp Mode issue (P060E and P0121)
bigbasec1
1 mo ago
5
163
1 mo ago
by
bigbasec1
B
Opinions on tech2 knock off or Vcx nano or ?
Blazentpi
2 mo ago
1
163
2 mo ago
by
Schurkey
B
Clunking noise when shutting off vehicle or going into reverse.
bpglue
3 mo ago
0
169
3 mo ago
by
bpglue
Intermittent no start no crank
Clkish1988
4 mo ago
4
209
3 mo ago
by
Supercharged111
AFM OIL BYPASS STICKING OPEN AFTER HIGH RPM PULLS W
blueblazer5_3
4 mo ago
0
152
4 mo ago
by
blueblazer5_3
AFM delete=no oil pressure
FamilymanGT
5 mo ago
5
695
4 mo ago
by
Supercharged111
U
All dash lights on
uhlenhopp09
5 mo ago
9
366
4 mo ago
by
Ravalli Surfer
Need help
Dustinmccall
4 mo ago
1
234
4 mo ago
by
yeagamyster04
Great buy or no go??
Justmy2¢
12 mo ago
12
1K
5 mo ago
by
cage47
S
5.3 radiator fan shroud
Scooter01
5 mo ago
3
283
5 mo ago
by
nnorton44
S
Aftermarket Flexplates? 5.3 Vortec
STSCowboy
8 mo ago
5
347
7 mo ago
by
DDS-029
G
07' envoy denali transmission oil change?
GraphiteDenali
7 mo ago
3
506
7 mo ago
by
NJTB04
G
07' envoy 5.3v8 has blinking engine lite on cruise when towing ?
GraphiteDenali
8 mo ago
2
268
8 mo ago
by
Schurkey
A
2008 Envoy Denali 5.3L AFM delete/cam upgrade?
Amateur hour
8 mo ago
2
582
8 mo ago
by
Scooter172
A
Changing cam and valve springs
Amateur hour
8 mo ago
0
221
8 mo ago
by
Amateur hour
Throttle position sensor / Throttle body
BenG12
8 mo ago
1
325
8 mo ago
by
Vega_TB
M
Vibration/Rumble in gas peddle
Mjmcfarl3
9 mo ago
3
260
9 mo ago
by
Ravalli Surfer
C
New Crankshaft Sensors Won't Run
CycleCraft
10 mo ago
0
246
10 mo ago
by
CycleCraft
Need suggestions on new problem and Codes
deepblue
11 mo ago
4
381
10 mo ago
by
deepblue
M
TJ / LJ engine swap in SoCal?
Michael00
12 mo ago
1
260
12 mo ago
by
Ravalli Surfer
Need help
Rebelmommaof3
12 mo ago
1
212
12 mo ago
by
chem_man
J
2006 GMC Envoy XL Denali 5.3 Orfice Tube Location
JCP0521
12 mo ago
1
715
12 mo ago
by
JCP0521
2004 Trailblazer 5.3 swap OIL PAN THAT CLEARS?
Blazingorblazed
May 12, 2021
1
480
May 13, 2021
by
Jimbo Denali
oil pan for 5.3 swap
Blazingorblazed
May 12, 2021
0
412
May 12, 2021
by
Blazingorblazed
06-07 5.3 Trailblazer
HotRod76
Feb 14, 2021
1
408
May 11, 2021
by
Ricosavage627
S
Transmission Clanking 2006 Envoy XL Denali
STSCowboy
Apr 24, 2021
1
411
Apr 24, 2021
by
Ravalli Surfer
S
Urgent Transfer Case Failure
scottbt
Mar 11, 2021
6
980
Apr 11, 2021
by
Ravalli Surfer
R
Oil pressure 0 or 80
Ricksmokestires
Mar 14, 2021
1
312
Mar 14, 2021
by
TJBaker
M
2006 Trailblazer EXT 5.3 won't start
mrseftink
Mar 9, 2021
2
328
Mar 10, 2021
by
mrseftink
M
5.3 Replacement Injectors
mpakrat
Mar 8, 2021
0
270
Mar 8, 2021
by
mpakrat
How to immortalize a 04 5.3
5.3EXT
Feb 24, 2021
0
424
Feb 24, 2021
by
5.3EXT
S
Engine Rattling After Sudden Deceleration
STSCowboy
Feb 22, 2021
0
221
Feb 22, 2021
by
STSCowboy
T
Need to Overfill Engine Oil to Make Engine Rattle Go Away
tony17112acst
Mar 17, 2020
3
704
Feb 22, 2021
by
STSCowboy
Transmission slip
Giblues
Dec 31, 2020
1
275
Jan 4, 2021
by
miketexas
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02-09 Vortec 5.3L V8 Engine and Drivetrain
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