oil pump - Chevy and GMC Duramax Diesel Forum
01-04.5 LB7 Duramax Powertrain 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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post #1 of 10 (permalink) Old 11-21-2010, 07:44 PM Thread Starter
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oil pump

has anyone changed one? how hard is it?


2007.5 Silverado 2500HD 4X4 Reg Cab LB, LMM, RED
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Edge Insight, Autometer gauges, 3inch Drop Shackles
3inch boost tubes, Raptor Liftpump, 3inch Profab Ybridge, Arp Headstuds
Billet HTT S366, 45% Injectors, 85% Cp3, Hamilton Valve Springs
LML Manifold, 4" Exhaust,7inch Stack, 60" Traction Bars
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post #2 of 10 (permalink) Old 11-21-2010, 07:49 PM
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engine has to come out.

ben

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05 dmax/allison...always testing something new


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post #3 of 10 (permalink) Old 11-21-2010, 07:51 PM
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doesnt pan have to be dropped?

Kyle
13 lml stock
sold 04.5 lly
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post #4 of 10 (permalink) Old 11-21-2010, 07:54 PM
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Quote:
Originally Posted by kman2468 View Post
doesnt pan have to be dropped?
Yes, the upper pan has to come off. To get the upper pan off the engine has to come out.

BUT If you are hell-bent on doing it in the truck, the trans has to come out, the entire front suspension and front differential has to come out. Along with the whole front of the engine. Much easier to just pull the engine in my opinion.

I have to ask though...what makes you say the oil pump needs to be replaced? Oil pump failures are incredibly rare..

06 audi S4, V8/6spd
05 dmax/allison...always testing something new


-BT DieselWorks, LLC-

[SIZE="3"]Specializing in a wide range of custom electronics and great gadgets for your 2001+ GM full size truck/SUV

Allison torque converter lockup controllers, Allison Tap-Shift kits, digital DSP-5 switches, affordable injector harness repair kits, and much more!

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post #5 of 10 (permalink) Old 11-21-2010, 08:21 PM Thread Starter
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Quote:
Originally Posted by duratothemax View Post
Yes, the upper pan has to come off. To get the upper pan off the engine has to come out.

BUT If you are hell-bent on doing it in the truck, the trans has to come out, the entire front suspension and front differential has to come out. Along with the whole front of the engine. Much easier to just pull the engine in my opinion.

I have to ask though...what makes you say the oil pump needs to be replaced? Oil pump failures are incredibly rare..
i dont believe its out... its just my gauge is doin all kinds of funny things... to were it will be reading fine then drop to 0 and start dinging then... start working again or sometimes staying at 0


2007.5 Silverado 2500HD 4X4 Reg Cab LB, LMM, RED
Edge Cts, 4inch exhaust, Efi Live
2005 Silverado 2500HD 4x4, Reg Cab LB, LLY, RED
285/50/20 Nitto 420s, 20x10 Gear Alloy 726MB
Edge Insight, Autometer gauges, 3inch Drop Shackles
3inch boost tubes, Raptor Liftpump, 3inch Profab Ybridge, Arp Headstuds
Billet HTT S366, 45% Injectors, 85% Cp3, Hamilton Valve Springs
LML Manifold, 4" Exhaust,7inch Stack, 60" Traction Bars
Blackout Performance Trans with 1058
Tuned and Built by Blackout Performance
630rwhp 1150rwtq 11.8@111 -Jake
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post #6 of 10 (permalink) Old 11-21-2010, 08:27 PM
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Probably the sender. Much more common failure, or the cluster itself.

Jesse
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post #7 of 10 (permalink) Old 11-21-2010, 08:33 PM
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Quote:
Originally Posted by gr8shot View Post
Probably the sender. Much more common failure, or the cluster itself.
I agree. 99 times out of 100 its the sender.

The duramax oil pumps are very simple and reliable. I have only heard of ONE oil pump failure.

06 audi S4, V8/6spd
05 dmax/allison...always testing something new


-BT DieselWorks, LLC-

[SIZE="3"]Specializing in a wide range of custom electronics and great gadgets for your 2001+ GM full size truck/SUV

Allison torque converter lockup controllers, Allison Tap-Shift kits, digital DSP-5 switches, affordable injector harness repair kits, and much more!

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post #8 of 10 (permalink) Old 11-21-2010, 08:43 PM Thread Starter
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i have a new sender sitting here waiting to be put in lol.... so i heard they suck to do


2007.5 Silverado 2500HD 4X4 Reg Cab LB, LMM, RED
Edge Cts, 4inch exhaust, Efi Live
2005 Silverado 2500HD 4x4, Reg Cab LB, LLY, RED
285/50/20 Nitto 420s, 20x10 Gear Alloy 726MB
Edge Insight, Autometer gauges, 3inch Drop Shackles
3inch boost tubes, Raptor Liftpump, 3inch Profab Ybridge, Arp Headstuds
Billet HTT S366, 45% Injectors, 85% Cp3, Hamilton Valve Springs
LML Manifold, 4" Exhaust,7inch Stack, 60" Traction Bars
Blackout Performance Trans with 1058
Tuned and Built by Blackout Performance
630rwhp 1150rwtq 11.8@111 -Jake
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post #9 of 10 (permalink) Old 11-21-2010, 09:27 PM
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Quote:
Originally Posted by gr8shot View Post
Probably the sender. Much more common failure, or the cluster itself.
If the stepper motor is bad it wont set the oil warning light on.

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post #10 of 10 (permalink) Old 11-23-2010, 01:01 AM
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Quote:
Originally Posted by duratothemax View Post
I agree. 99 times out of 100 its the sender.

The duramax oil pumps are very simple and reliable. I have only heard of ONE oil pump failure.
His would be the other 1

Quote:
Originally Posted by duramaxbd03 View Post
i have a new sender sitting here waiting to be put in lol.... so i heard they suck to do
I guarentee you they are easiar to do then the oil pump. You sure there isnt fuel in the oil from the bad injector?

Jason
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