2020+ LM2 Duramax Powertrain | Chevy and GMC Duramax Diesel Forum

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22 Sierra 1500 AT4 CC LM2 New style build

2

33

3K

3 4 5

85

41K

Curious case of missing system preferences…??

19

385

2 3

45

17K

Dealer cannot fix CEL

2 3 4

70

9K

2020 Silverado 1500 3.0L LM2 burning coolant and oil

13

814

Squealing while driving

0

139

LZ0 will replace LM2 in 2023

4 5 6

116

16K

Transmission Leak at 1500 miles

16

451

Just Lovin my 2021 GMC Sierra SLT

8

352

2021 Chevy TPMS Monitoring System relearn

9

347

by Border Bandit

2021 HD - 10 speed shift "feel"

3

292

LM2 first fuel filter change

17

683

Anybody using a Obdlink MX+ OBD2 for gauges

2 3

56

2K

2022 1500 10-speed : Normal operating temp?

11

507

Turbo Overboost Code on LM2

2

23

1K

DTC P2002 causes

7

4K

Lm2 fuel filter head

4

343

by Bobpet

4.5 gallon of DEF used in 5300 miles, NHT

8

1K

DEF tank error work-around?

2

33

7K

Speedometer issues

2

266

by Bag711

What would you do?

15

3K

Oil plug gasket- where to find one?

2

29

2K

Does oil type affect Regen Cycle

2 3

45

3K

New 2021 with CEL

7

543

by BDann

Reduced mileage

8

573

2022 Sierra 1500 AT4 LM2 (new style) fuel mileage

6

1K

17” stock LT wheels upgrade to 18” trailboss???

15

912

Firewall Penetrations

7

2K

Canadian LM2 owners - engine oil part #

5

420

3.0 Duramax won’t fire

32 33 34

666

121K

LM2 Turbo Sound

9

4K

2

34

2K

by Jonlsu

Another oil leak thread

2

437

by 98whitelightnin

Diff oil change requirement on 2020 1500??

2

585