GM1500Diesel Forum

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G
2021 Sierra Denali 3.0

Truck Discussions

General Discussion

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110
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996
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996
Captjack
DEF empty warning, but DEF tank is FULL.. Anyone have this issue?

Body & Appearance

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42
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280
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42
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280
R
Adam’s ceramic coat

Wheels | Tires | Suspension

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13
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110
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13
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110
BoostN
Bilstein 5100 Shocks Installed on LM2 / RST Silverado

Towing and Hauling

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19
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106
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19
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106
B
Silverado 1500 Trailering Chart. Still waiting for 3.0L Duramax numbers.

Drivetrain Discussions

GM 3.0L I6 Diesel Engine

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83
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689
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83
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689
BoostN
2025 Tahoe / Suburban to get LZ0 Duramax 3.0

Transmission Talk

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8
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72
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8
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72
BoostN
Reprogram 10L80 Trans?

General Maintenance

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20
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220
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20
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220
rbdjr
The 45K mile service

Reports and Media

Automotive News and Articles

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30
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135
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30
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135
gemarsh
2024 Chevy Silverado ZR2 has Duramax 3.0L option

Site Announcements

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5
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10
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5
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10
BoostN
Test 123

Other Diesels

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4
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18
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4
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18
D
2500 ZR2 Duramax

Other

Off Topic

Other general nonsense....
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931
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R
Happy Thanksgiving Everyone!

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J
Jvaladez86
I have a 2022 3.0 Diesel engine only have 6100 miles on it and it’s leaking oil, pretty sure it’s the rear main seal. Didn’t know these truck were having oil leak problem till TODAY.
•••
T
twins1949
Good morning I’m having issues with 2020 3.0 engine oil seals.who can I contact at gm to try and resolve issues.asked for loaner car huge problem got a used car junk .need a truck no answer on how long for repairs?need help dealer being a jerk.
•••
D
DavidCop
| ,,,, Show more!
•••
rbdjr
rbdjr wrote on BoostN's profile.
you have a email i can send?
•••
E
Eastwood
Purchased 2021 GMC Denali 3.0 diesel and only have 600 miles on it and love it!
•••

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