Duramax Hard Parts

Dmax Performance Parts and related discussions.

LB7 New

2.2K
31.9K
Threads
2.2K
Messages
31.9K
2004LB7
2003 no start condition

LLY New

1.3K
17.3K
Threads
1.3K
Messages
17.3K
2004LB7
Ether and Overreving

LBZ New

1.2K
14.3K
Threads
1.2K
Messages
14.3K
1FastBrick
Truck wont rev much past 2k rpm no codes

LMM New

767
11.2K
Threads
767
Messages
11.2K
N2BRK
PLEASE HELP!! 07.5 LMM No shift indicator, dome lights, power locks & windows, NO CRANK NO START

LML New

652
8.4K
Threads
652
Messages
8.4K
1FastBrick
Got a couple of cylinder contribution codes

L5P New

124
3.7K
Threads
124
Messages
3.7K
C
2024 6.6 Fuel in oil

Transfer Case / Axles / Driveshafts Tech New

294
3.5K
Threads
294
Messages
3.5K
TheBac
No 4WD

Van

18
312
Threads
18
Messages
312
M
LGH (detuned LML in a van) Engine Shuts off at full throttle

Part #'s

396
2.3K
Threads
396
Messages
2.3K
K
Crossmember part # or replacement

Turbo Talk

"Nitrous is nice, but it's best to be Blown"
1.9K
43.7K
Threads
1.9K
Messages
43.7K
malibu795
WWYD? Turbo time

General Fuel System & Exhaust Questions New

372
7.7K
Threads
372
Messages
7.7K
TheBac
DEF Fluid in fuel tank

Fluids and Maintenance

652
10.7K
Threads
652
Messages
10.7K
OleBlackyLBZ
Starfire Fluid Built Trans

The Pharmacy

Nitrous, Propane, Meth, oxidizers
172
3.2K
Threads
172
Messages
3.2K
Baking83
Nitrous
D
Need help
Replies
2
Views
453
Chevy1925
Chevy1925
K
Passenger battery boiling
Replies
13
Views
4K
Wolverine68
W
C
Fuel rail pressure to high
Replies
19
Views
5K
PureHybrid
PureHybrid
S
Issues after deleting my LML
Replies
6
Views
413
Jakezed22
Jakezed22
2004LB7
LML service bulletin
Replies
35
Views
1K
snowman22
snowman22
P
Catastrophic turbo failure - 72mm Danville performance- Now what?
Replies
28
Views
2K
Bdsankey
Bdsankey
T
Cp3 swap
Replies
2
Views
151
Bdsankey
Bdsankey
J
Help Truck Won't Start
Replies
22
Views
4K
Ron Nielson
R
J
Leak and question about my 2018 l5p duramax
Replies
5
Views
589
gmc502
gmc502
shakenfake
Oil pan drain plug crush washer
Replies
4
Views
425
DAVe3283
DAVe3283
T
911 HELP
Replies
18
Views
773
JoshH
JoshH
J
Service 4wd C0321 code
Replies
2
Views
235
Jstamper
J
S
Injector 6 and 7 issue. Lbz
Replies
1
Views
351
2004LB7
2004LB7
P
high pressure fuel leak
Replies
4
Views
246
2004LB7
2004LB7
B
HDMI & 12v Power Supply coming from Fuse Panel
Replies
3
Views
213
BlckMax
B
S
Fuel injector codes
Replies
3
Views
387
Ron Nielson
R
R
weird fuel pressure issues
Replies
5
Views
253
razorryan10
R
Z
Stubborn 2 big connectors
Replies
3
Views
237
Z71JONES
Z
M
Is this a stock turbo?
Replies
4
Views
349
yellowchevy
Y
shakenfake
Service Brake System message
Replies
99
Views
3K
shakenfake
shakenfake
JAG91761
Failed visual test
Replies
16
Views
519
2004LB7
2004LB7
M
S300 Kit LMM
Replies
2
Views
364
ZeroGravity58
ZeroGravity58
Josh154
Going compounds on lml few questions
Replies
97
Views
11K
yellowchevy
Y
bsmall2800
OBDII "Not Ready" for SMOG TEST
Replies
7
Views
781
bsmall2800
bsmall2800
BigTex1968
CP4 Conversion kit
Replies
13
Views
809
Chevy1925
Chevy1925
E
LLY overheating when idle
Replies
7
Views
468
malibu795
malibu795
M
Stroker pump differences
Replies
2
Views
305
PureHybrid
PureHybrid
the MISTRIS
P01F0
Replies
8
Views
1K
TheBac
TheBac
D
Squeal on acceleration
Replies
56
Views
7K
DAKOTAKIDD
D
Jordan715
LB7 fuel rail plug leak.
Replies
2
Views
321
Jordan715
Jordan715
J
LBZ Fan Clutch
Replies
42
Views
2K
N2BRK
N2BRK
fajitatone
Turbo Vane Position code, do I get a new turbo system?
Replies
5
Views
436
fajitatone
fajitatone
R
Got Sludge?
Replies
48
Views
2K
DAVe3283
DAVe3283
Dozerboy
LBZ: Spoologic up pipes and down pipes quality?
Replies
2
Views
290
JoshH
JoshH
T
SAC injector whine?
Replies
2
Views
310
DAVe3283
DAVe3283
J
2003 duramax 2500 HD 4 wheel drive Strange noise
Replies
16
Views
455
Jaysbay
J
R
S400
Replies
3
Views
770
Bdsankey
Bdsankey
O
glow plugs
Replies
2
Views
277
oldwhitehorse
O
DIESELMAFIAPER.LB7
No start issue.
Replies
25
Views
829
Chevy1925
Chevy1925
R
Selecting the correct head gaskets?
Replies
8
Views
508
RPEVEHOUSE
R
R
Wastegates
Replies
6
Views
414
RedChevy2005
R
T
Normal FPR duty cycle?
Replies
14
Views
820
JoshH
JoshH
0
Code readers for 2024 L5P
Replies
16
Views
926
NC-smokinlmm
NC-smokinlmm
T
2018 L5P Engine Miss
Replies
9
Views
788
Ron Nielson
R
N2BRK
Passing "Smog"
Replies
18
Views
812
DAVe3283
DAVe3283
R
Turbo sizing trouble
Replies
9
Views
400
Bdsankey
Bdsankey
M
Looking for help in right direction.
Replies
6
Views
272
2004LB7
2004LB7
TheBac
Ever heard of Boostline rods before?
Replies
15
Views
397
Bdsankey
Bdsankey
T
Fuel injector knock
Replies
90
Views
2K
2004LB7
2004LB7
T
Good compression - Bad balance rate
Replies
13
Views
401
Trgglynn
T
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