Duramax Hard Parts

Dmax Performance Parts and related discussions.

LB7 New

2.2K
31.9K
Threads
2.2K
Messages
31.9K
Bdsankey
Sac 65

LLY New

1.3K
17.3K
Threads
1.3K
Messages
17.3K
kidturbo
LLY Ficm

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
F
Got a couple of cylinder contribution codes

L5P New

124
3.8K
Threads
124
Messages
3.8K
TheBac
Oil prime

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

373
7.7K
Threads
373
Messages
7.7K
M
dual tank woes

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
F
COOLANT IN OIL
Replies
13
Views
845
Freddo123
F
Mogman
correct schematic for transfer case control 2008 LMM
Replies
9
Views
723
2004LB7
2004LB7
Dm23
Fuel filter question
Replies
3
Views
763
dmax_ty
D
Mogman
Junk yard ECM, NOW WILL NOT START!
Replies
7
Views
977
S Phinney
S
R
2013 duramax 3500
Replies
10
Views
803
TheBac
TheBac
M
Lb7 fuel pressure problem
Replies
11
Views
1K
ironmax
ironmax
J
Eek! What is this in my oil?
Replies
12
Views
2K
jlawles2
J
D
Misfire
Replies
11
Views
1K
TheBac
TheBac
OleBlackyLBZ
Tuned LML Defuels too hard
Replies
1
Views
477
2004LB7
2004LB7
2005DURAMAXER
hard upper radiator hose but doesnt overheat
Replies
14
Views
3K
mac2881994
M
Jwatsonlml
2017 L5p
Replies
3
Views
1K
snowman22
snowman22
R
LML, Fuel temp sensors
Replies
1
Views
2K
GMC_2002_Dmax
GMC_2002_Dmax
G
Deleted LML suddenly quieter.
Replies
2
Views
1K
TheBac
TheBac
ZeroGravity58
Van thermostat housing
Replies
10
Views
1K
The A Team
The A Team
D
Changed thermostat but can’t get coolant to bleeder
Replies
0
Views
366
Duramax112345
D
P
2015 dually knock
Replies
16
Views
1K
pavetim
P
OleBlackyLBZ
2016 LML Code PO26C
Replies
3
Views
1K
OleBlackyLBZ
OleBlackyLBZ
D
Cranks but won’t start
Replies
2
Views
413
Duramax112345
D
Bdsankey
Best NP263XHD Prebuilt Case or Rebuild Kit
Replies
16
Views
2K
Bdsankey
Bdsankey
OleBlackyLBZ
Exergy Fuel Treatment
Replies
4
Views
711
Woody35
W
R
FULL EGR DELETE, INJECTOR ISSUES.
Replies
4
Views
845
RJE1960
R
S
p0400 EGR code
Replies
16
Views
959
Mikey52
M
ZeroGravity58
Headgaskets
Replies
5
Views
578
ZeroGravity58
ZeroGravity58
Mogman
Code P0090
Replies
22
Views
3K
Mogman
Mogman
Dm23
Turbo options for L5P
Replies
43
Views
5K
Dm23
Dm23
0
1 bad new injector
Replies
4
Views
584
08lmm72mm
0
pinkmist
iDash not displaying option for transmission temp in menu
Replies
2
Views
1K
FreedomOne
F
T
Am I in Trouble?
Replies
5
Views
1K
08lmm72mm
0
K
idle above 800 ... a pain in traffic
Replies
4
Views
1K
Lifted L5P
Lifted L5P
Dante2795
Lmm randomly stopped building rail and won’t start
Replies
22
Views
1K
Josh154
Josh154
J
Holy harmonic balancer Batman!
Replies
32
Views
3K
TheBac
TheBac
WVRigrat05
DEF tank heater bypass ????
Replies
8
Views
4K
kaylabryn
K
D
2016 gmc 2500hd
Replies
7
Views
607
Mike L.
Mike L.
1
Glow plug part #
Replies
4
Views
666
15DeadMonkeys
1
Supermoto68
Code PO128 Coolant Thermostat Performance
Replies
4
Views
831
Ron Nielson
R
briencolgan
LB7 lower engine knock
Replies
7
Views
492
2004LB7
2004LB7
Josh154
Random no start
Replies
6
Views
834
Chevy1925
Chevy1925
L
Complete parts list for Long block Rebuild
Replies
0
Views
620
LBZLaRoche
L
N2BRK
Chasing a problem
Replies
17
Views
866
N2BRK
N2BRK
W
  • Locked
Best place to buy a delete kit
Replies
10
Views
6K
Welder1999
W
T
Knock, low fuel pressure, slight surge, rough idle, no smoke?
Replies
5
Views
422
Travis B
T
G
Intermittent code P0098
Replies
1
Views
859
Ron Nielson
R
Lb7joezay
Engine coolant temp
Replies
9
Views
1K
NevadaLLY
NevadaLLY
C
*Help* Truck Wont Start
Replies
6
Views
419
Chucky797
C
C
2019 D-Max Loud Ticking
Replies
16
Views
3K
tylerdurden
T
C
2020 l5p duramax knock at idle cold, worse hot
Replies
46
Views
18K
tylerdurden
T
04LB7yz
What are people using for manifold bolts? Pro Fab
Replies
22
Views
5K
SheeB
S
9
Injector exceeded learning limit. new ECM. LML
Replies
0
Views
1K
911bris
9
D
Broken intake cover
Replies
10
Views
797
Bdsankey
Bdsankey
Lifted L5P
Bad Transfer Case - Since New - 2019 Chevrolet 3500HD SRW SB
Replies
10
Views
1K
S Phinney
S
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