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GMC 1500 AT4 Problems and Issues

Here is the place to discuss any problems or issues with the GMC Sierra 1500 AT4
zealoussalty_w
Engine is toast (2025 sierra 1500 at4 3.0L)
2
Replies
23
Views
1K
SierraTRK
SierraTRK
A
Very hard downshifting
Replies
5
Views
716
muddernuker
M
E
Running boards not working
Replies
1
Views
102
gemarsh
gemarsh
Piercy
Driver's door rattle!
Replies
2
Views
249
Piercy
Piercy
S
Electrical Problems
Replies
3
Views
381
salty1z
S
Ninetyfive
Lower bumper replacement
Replies
6
Views
3K
BillyCeee
B
Brocky
2022 6.2L with 27K needs new brake pads and rotors
2
Replies
16
Views
5K
Glava2876
Glava2876
Sevenonfouroff
Service Transmission Message
Replies
3
Views
515
Sevenonfouroff
Sevenonfouroff
P
Vibration when accelerating only...
Replies
5
Views
204
R467X
R
sanny651
Service Transmission Now error
Replies
8
Views
403
pinebaron
pinebaron
24TGrey.
OIL EATING
2
Replies
19
Views
1K
24TGrey.
24TGrey.
E
New GMC Owner - First Issue
Replies
0
Views
166
EatMySHorts
E
R
Radio cuts out for 1 second consistently
2 3
Replies
38
Views
2K
pinebaron
pinebaron
ParkJosher
2024 1500 6.2L AT4X AEV Audio/Infotainment Issues
Replies
1
Views
281
ParkJosher
ParkJosher
B
Downhill & Shifting Issues
Replies
4
Views
285
Andystoy AT4
A
S
AC Clutch fuse keeps blowing.
Replies
1
Views
144
gemarsh
gemarsh
Smokemachine
2026 AT4 (Duramax) - Sweet Smell Inside Cabin (Coolant Leak?)
Replies
10
Views
885
SierraTRK
SierraTRK
B
Dead Battery. Like Really Dead Battery.
2 3 4
Replies
50
Views
3K
SierraTRK
SierraTRK
BG2284
AT4 DOWN!
2
Replies
17
Views
988
MikeDAV8r
M
Purple MF
Clunking from rear of truck when turning or rocking to side , and not head on ?
2 3 4
Replies
57
Views
28K
Whitebeast
Whitebeast
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