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Forums
TrailBlazer, Envoy, 9-7x, Ascender, Rainer, & Bravada
Engine & Drivetrain
Vortec 5.3L V8
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NEED HELP
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F
NEED HELP
Bad fuel pump?
Fishnbob
Oct 31, 2023
Replies
18
Views
730
Nov 12, 2023
Mooseman
F
NEED HELP
Replaced TPS with no effect
Fishnbob
Aug 16, 2023
Replies
4
Views
459
Aug 16, 2023
Mooseman
NEED HELP
2005 GMC Envoy 5.3 invaded by gremlins
Rumblefish
Jan 4, 2016
Replies
8
Views
6K
Jan 11, 2022
mrrsm
F
NEED HELP
2006 Envoy Denali 5.3 rebuild
Freakzilla660
Aug 8, 2021
Replies
2
Views
3K
Aug 9, 2021
Freakzilla660
F
NEED HELP
04 GMC ENVOY XUV Lift issues
Frost
Jun 23, 2020
Replies
12
Views
5K
Mar 12, 2021
matermark
D
NEED HELP
Noise when accelerating, idol (until it warms up) and shifts hard from D to R and vice versa
dr_leis7
Jul 19, 2020
Replies
7
Views
2K
Aug 3, 2020
dr_leis7
D
NEED HELP
Spark plugs....
LT1transAM
Aug 13, 2016
Replies
11
Views
3K
Jun 30, 2020
linneje
NEED HELP
Overheating 5.3L
aaserv
Apr 4, 2020
Replies
15
Views
13K
Apr 10, 2020
Blckshdw
NEED HELP
Where does this go? Thread
aaserv
Mar 1, 2020
Replies
2
Views
958
Mar 3, 2020
aaserv
K
NEED HELP
Fuel Line Replacement 2007 Suburban 1500
KCwiz
Feb 18, 2020
Replies
1
Views
883
Feb 18, 2020
Mooseman
NEED HELP
06 Envoy Denali 5.3 No Spark
HardTimes
Jan 11, 2020
Replies
22
Views
9K
Jan 17, 2020
Mooseman
R
NEED HELP
no start but cranks
rjcsue
Jul 23, 2019
Replies
2
Views
1K
Jul 24, 2019
Maverick6587
NEED HELP
5.3l Chevy trailblazer lt ext engine tick
Nordic76
Jun 14, 2019
Replies
3
Views
2K
Jun 16, 2019
Mooseman
D
NEED HELP
2006 Chevrolet Trailblazer EXT 5.3 Losing power and stop
Dipper
Jun 7, 2019
Replies
10
Views
2K
Jun 8, 2019
Dipper
D
NEED HELP
Getting the catalytic converter assembly out
HizAndHerz
May 25, 2018
Replies
6
Views
1K
May 30, 2018
HizAndHerz
NEED HELP
5.3 rough idle/miss
ND-1965C10
Nov 19, 2017
Replies
6
Views
2K
Nov 21, 2017
littleblazer
NEED HELP
Rainier V8 mods
joshtheawesome
Oct 19, 2017
Replies
3
Views
2K
Oct 20, 2017
DocBrown
NEED HELP
Noise at idle
LT1transAM
Aug 15, 2016
Replies
6
Views
1K
Sep 12, 2016
Mooseman
B
NEED HELP
Driveshaft removal
Backwoods16
Apr 23, 2016
Replies
2
Views
1K
Apr 24, 2016
Backwoods16
B
F
NEED HELP
5.3L Multiple Cylinder Misfire/ Catalyst Below Threshold Bank 2
Finally
Feb 12, 2016
Replies
6
Views
6K
Mar 20, 2016
Finally
F
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