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Chevy / GMC Duramax 04.5-05 LLY Forum
04.5-05 LLY Duramax Powertrain
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289
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Read Before Posting Please
Durallymax
Jun 8, 2010
17
25K
Jan 15, 2024
by
Will Wilder
Sticky
04.5 and 05 LLY issues
DieselX-Bob
Dec 28, 2011
10
11
12
233
295K
Aug 20, 2023
by
04cateyedirtymax
C
Sticky
LLY Low Oil Pressure
Crasher
Apr 11, 2013
2
27
86K
Jun 30, 2023
by
jeffbbarnes03
C
Sticky
LLY / LBZ Mouthpiece Flow Data
camdoc
Jul 16, 2009
9
10
11
217
131K
Jul 12, 2018
by
rta1197
Sticky
Engine RPO Codes
ob_1jr
Jan 20, 2008
7
26K
Nov 21, 2016
by
Duramax_diesel
P
Driving with bad head gasket?
Patrick Godfrey
Oct 4, 2018
5
16K
1d ago
by
jdiaz1341
J
2003 lb7
Junkyduramax
Nov 6, 2023
Redirect
–
–
N/A
R
Intermittent Coolant Loss Thinking Head Gaskets
robertsmerch1
Feb 28, 2024
2
96
5d ago
by
johnmyster
P
Any advice/ tips
Phibb11
6d ago
5
184
6d ago
by
Ron Nielson
0
HELP!!! SPEEDOMETER NOT WORKING AND TRANSMISSION NOT SHIFTING P0700 U0101 05 DURAMAX
05duramaxx
Apr 6, 2023
10
2K
6d ago
by
Dieselthepitbull
FPR duty cycle at idle?
Trgglynn
6d ago
0
50
6d ago
by
Trgglynn
Vibration help!
laplanteT41
Aug 17, 2017
2
32
10K
Mar 12, 2024
by
oscyjack
R
No heat output UNLESS temp set to 90*
Red2500HD
Nov 11, 2010
2
35
47K
Mar 11, 2024
by
bill.morency
P
Error Codes after Glow Plug control module Change
Poway_Dmax
Mar 11, 2024
2
71
Mar 11, 2024
by
Poway_Dmax
Looking for LLY ECE pins
Trgglynn
Mar 10, 2024
1
55
Mar 10, 2024
by
BlownL36
A
Any help with what this is and where it came from
Auzcole
Mar 10, 2024
6
264
Mar 10, 2024
by
BlownL36
Good compression - High balance rate
Trgglynn
Mar 9, 2024
1
70
Mar 9, 2024
by
Ron Nielson
F
04 lly rough idle
Fireman718
Mar 9, 2024
1
66
Mar 9, 2024
by
Nate Dmax
G
Recommend shop for head gasket work
Gameon
Mar 4, 2024
9
216
Mar 8, 2024
by
BlownL36
C
HELP!!
Cdonley
Mar 3, 2024
8
143
Mar 7, 2024
by
cfell
White smoke cold take off
Trgglynn
Mar 6, 2024
4
114
Mar 6, 2024
by
Ron Nielson
FICM control pin issue
Trgglynn
Mar 5, 2024
1
129
Mar 5, 2024
by
Ron Nielson
FICM wiring diagram
Trgglynn
Mar 5, 2024
0
96
Mar 5, 2024
by
Trgglynn
Bad ECM symptoms
A_T_Ver
Sep 3, 2010
17
48K
Mar 3, 2024
by
ehunter89
C
LLY intermittent surging
cmyers106
Nov 4, 2023
7
806
Mar 2, 2024
by
Boudin
A
URGENT!!! Truck wont start after fuel filter change
alpine1jds
Mar 5, 2009
2
48
76K
Mar 2, 2024
by
Boudin
C
After extended idle truck has no power or stall out
ccwalker
May 15, 2015
21
8K
Feb 28, 2024
by
Jcbfink
9
LLY Injector Flow Rate Programing in Tech 2
96Formula6spd
Dec 30, 2021
7
5K
Feb 28, 2024
by
DallonH5
Question about '05's radiator drainage- petcock or hose drain?
showme
Jan 19, 2024
5
237
Feb 27, 2024
by
showme
F
Lly weird noise from under cab
FinnLenihan
Feb 23, 2024
1
179
Feb 23, 2024
by
FinnLenihan
T
LLY p1093
Tfriedrichs
Feb 19, 2024
4
170
Feb 19, 2024
by
Ron Nielson
B
05 Lly engine whine while towing
Bruce05LLY
Feb 19, 2024
1
140
Feb 19, 2024
by
Ron Nielson
Lbz block lly heads?
Jackson2
Feb 18, 2024
1
139
Feb 19, 2024
by
Nate Dmax
J
Have to keep Priming Fuel Filter
Jorge Gonzalez II
Jan 8, 2022
11
3K
Feb 16, 2024
by
Ron Nielson
Odd problem when I tried to start the truck today.
showme
Jan 20, 2024
8
283
Feb 15, 2024
by
showme
W
Leak at transmission, passenger side 05 6.6 LLY
WPNS2581SPLT
Feb 15, 2024
10
264
Feb 15, 2024
by
WPNS2581SPLT
M
P0193 fuel rail pressure sensor signal high
Mitch_LBZ
Sep 29, 2020
17
16K
Feb 14, 2024
by
Ron Nielson
C
Help..lly shuts off while driving randomly.
chevyboy12
Jan 31, 2022
7
2K
Feb 14, 2024
by
cmares8611
LLY PCV reroute help
CateyeDmax05
Feb 11, 2024
24
1K
Feb 14, 2024
by
Ryan Burright “Turbo”
R
Coolant temp back and forth
RileyT
Feb 13, 2024
17
359
Feb 13, 2024
by
johnmyster
1
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04.5-05 LLY Duramax Powertrain
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Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.
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