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TrailBlazer, Envoy, 9-7x, Ascender, Rainer, & Bravada
Engine & Drivetrain
Vortec 4.2L I-6
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SOLVED!
Low oil pressure 4.2L
Nvarela64
Aug 23, 2022
2
Replies
54
Views
10K
Jan 25, 2024
Mooseman
J
SOLVED!
Alternator not charging
joe mama
Nov 22, 2023
Replies
3
Views
535
Nov 24, 2023
joe mama
J
SOLVED!
replacement cat
jak03TB
Aug 31, 2023
Replies
20
Views
1K
Nov 8, 2023
Realism
T
SOLVED!
4.2L LL8 Harmonic Balancer Removal/Installation
TopQuark
Sep 17, 2019
Replies
18
Views
9K
Sep 12, 2023
KWG2005
K
S
SOLVED!
So begins my P0171 journey.
sashainwy
May 2, 2023
Replies
6
Views
761
Jun 13, 2023
sashainwy
S
S
SOLVED!
Transmission shudder at 50-60 mph
santon
Apr 24, 2023
Replies
12
Views
3K
Apr 27, 2023
santon
S
K
SOLVED!
Airbag Light
krunal88
Mar 7, 2023
Replies
13
Views
910
Mar 9, 2023
TJBaker57
SOLVED!
Pinging/clacking from engine
808
Jan 18, 2023
Replies
22
Views
2K
Feb 8, 2023
c good
C
SOLVED!
IAT sensor
Elizabetty
Dec 17, 2022
Replies
16
Views
2K
Feb 5, 2023
movietvet
SOLVED!
reoccuring low power / limp mode
Ilikemy3s
Oct 11, 2021
Replies
19
Views
10K
Jan 24, 2023
Mooseman
SOLVED!
Water pump oil and other oil
Elizabetty
Jan 21, 2023
Replies
9
Views
1K
Jan 22, 2023
Mooseman
SOLVED!
Fuel pressure regulator bolts
Elizabetty
Dec 31, 2022
Replies
7
Views
875
Jan 9, 2023
Elizabetty
SOLVED!
Battery needle hangs then jumps but everything fine?
Elizabetty
Jan 9, 2023
Replies
8
Views
915
Jan 9, 2023
Elizabetty
SOLVED!
Coolant reservoir cap has me feeling stupid
Elizabetty
Dec 28, 2022
Replies
11
Views
5K
Dec 31, 2022
Mooseman
SOLVED!
Oil on connectors normal over time or signify problem?
Elizabetty
Dec 7, 2022
Replies
17
Views
3K
Dec 17, 2022
Elizabetty
L
SOLVED!
04 TB LS engine r&r security light solid no crank
Livnonthedge
Nov 27, 2022
Replies
30
Views
2K
Dec 11, 2022
fixit
F
C
SOLVED!
Fuse 28 PCM-1 blows randomly
c good
Mar 15, 2018
2
3
4
Replies
156
Views
20K
Oct 5, 2022
rolo95
F
SOLVED!
4.2 Sluggish Acceleration and Odd Cold Startup
FlyFish3rman
Aug 4, 2022
Replies
25
Views
6K
Sep 12, 2022
FlyFish3rman
F
SOLVED!
Locked in Park, Won't activate starter (or click)...?
Roamingdoc
Jul 10, 2022
2
Replies
47
Views
4K
Aug 31, 2022
Roamingdoc
M
SOLVED!
2004 TB 4.2 high idle 3000 rpm
Machineman6981
Jul 25, 2022
Replies
13
Views
3K
Jul 27, 2022
Machineman6981
M
SOLVED!
code P0300. What to do next?
mark'stb
Mar 12, 2022
Replies
36
Views
7K
Apr 6, 2022
flyboy2610
B
SOLVED!
P0017 Assistance
Brimmy
Sep 6, 2021
Replies
18
Views
7K
Jan 20, 2022
mrrsm
SOLVED!
Crank no start when rains
Ilikemy3s
Jan 2, 2022
Replies
12
Views
2K
Jan 7, 2022
Ilikemy3s
M
SOLVED!
P0013 engine turn off
Mramses
Sep 2, 2021
Replies
1
Views
1K
Sep 3, 2021
Mooseman
B
SOLVED!
Trailblazer running Horrible after alternator replacement
BillVear
Apr 27, 2021
Replies
11
Views
3K
Apr 29, 2021
BillVear
B
SOLVED!
Cooling system test results.
JayArr
Apr 2, 2021
Replies
6
Views
1K
Apr 8, 2021
JayArr
SOLVED!
Noise Underneath & Rear
Nate8727
Jan 23, 2021
Replies
3
Views
1K
Feb 6, 2021
Nate8727
S
SOLVED!
Envoy will not start after a fan clutch and water pump exchange
Schadman
Jan 11, 2021
Replies
16
Views
4K
Jan 14, 2021
Schadman
S
M
SOLVED!
RPM Drop On Acceleration.
Mektek
Sep 17, 2020
Replies
25
Views
19K
Oct 30, 2020
Mektek
M
SOLVED!
Another crank but no start
krighton
Sep 21, 2020
Replies
15
Views
3K
Sep 30, 2020
TJBaker57
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TrailBlazer, Envoy, 9-7x, Ascender, Rainer, & Bravada
Engine & Drivetrain
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