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GMC 1500 AT4 3.0L Duramax Turbo Diesel engine

Discussions specific to the GMC AT4 3.0L Duramax Turbo Diesel engine
H
Howdy
Replies
6
Views
303
pinebaron
pinebaron
D
Can the Banks iDash #66560 - iDash 1.8 Initiate a Manual Regen
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5
Views
915
SmittysAT4
S
W
IAT sensor locations
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1
Views
256
gemarsh
gemarsh
D
2025 GMC AT4 Oil comsumption?
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3
Views
556
Desertdog
D
Sevenonfouroff
Improved Stance
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5
Views
1K
Sevenonfouroff
Sevenonfouroff
D
Do you drive in 2H, 4H or Auto?
Replies
9
Views
2K
Dive Bar Casanova
Dive Bar Casanova
AdrianAT4
1500 AT4 3.0L Duramax; Level with Bilstein and UCA's
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5
Views
5K
SmittysAT4
S
W
Transmission shift from a stop to 25mph (1st - 3rd)
Replies
5
Views
533
lowaggie
L
L
EGR valve location and cleaning
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3
Views
2K
R467X
R
TXSkier
Fuel additives
2 3
Replies
38
Views
7K
pinebaron
pinebaron
Haole
New 25’ 3.0-What can I do under the hood that wont void the warranty?
2
Replies
26
Views
7K
Wakinvol
Wakinvol
S
Oil change, only drained about 5 Liters?
Replies
5
Views
647
Cablebandit
C
mandalorian
TRUCK IS DEAD…2nd time around
Replies
5
Views
1K
mandalorian
mandalorian
mandalorian
HPTuners ... GDE vs DT
Replies
3
Views
2K
mandalorian
mandalorian
A
First long trip, happy with mpg!
Replies
3
Views
974
Don S
Don S
chaseydog
Monitoring EGT with Banks iDash
Replies
4
Views
5K
SmittysAT4
S
C
Gas or Water in Diesel
Replies
3
Views
931
gemarsh
gemarsh
Purple MF
Transmission jolts ... Slams into gear during up and down shifts
Replies
7
Views
2K
mandalorian
mandalorian
D
2025 1500 AT4 3.0 diesel oil
Replies
2
Views
1K
chaseydog
chaseydog
PHAT4
Best Oil Filter and Fuel Filter for 2021 3.0
Replies
9
Views
5K
Rocinante
R
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