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Old 03-22-2010, 08:22 AM   #1
SmokinBills 2SS
 
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Oh NO !!!!! TSB on the LS3 oil pump

So the other day i was going for a little drive. when warming up the drivers info center tells me "LOW OIL PRESSURE" "TURN OFF ENGINE"and i look into it at the dealer and theres a bulliten saying there is a concern about faulty relieve valve inside the oil pump that means no oil to the top of the motor, thank my lucky stars that i was at home and did'nt drive or run to long without oil.G.M has not come out with a revised part# for this fix so i bought a standard volume /high pressure pump from MELLING and all is well. Don't have the T.S.B. # here at home. if you can't find i'll post it up when i get to the shop.
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Old 03-22-2010, 08:38 AM   #2
PAUL SS
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I don't like the sound of that, When was your car built?
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Old 03-22-2010, 09:10 AM   #3
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Dec 14th '09 Lot of other chevrolets in this TSB(corvette,camaro,trucks and suv's)but i was one of the lucky ones that had the condtion and caught it in time to save the motor. had to service it myself because of all the Mods, Cam,Heads,exhaust. oh well my new hot rod right. it's only money$$$$$$$$$$$$$$$
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Old 03-22-2010, 09:16 AM   #4
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not sure thats true. they should have still done the TSB for you... If its a known issue (flaw) it shoud be covered regardless of mods. For example, if your tail shaft fails, you get a new tranny no matter what mods you have done b/c the part is a known issue...
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Old 03-22-2010, 10:08 AM   #5
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It also includes the L99 engines as well...not just the LS3.
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Old 03-22-2010, 02:09 PM   #6
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Quote:
Originally Posted by SmokinBills 2SS View Post
Don't have the T.S.B. # here at home. if you can't find i'll post it up when i get to the shop.
It's not a bulletin, its a PI - PIP4158C.
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Old 03-22-2010, 02:23 PM   #7
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PIP4158C: Low Oil Pressure Due To Seized Oil Pressure Relief Valve - (Dec 29, 2009)


Subject: Low Oil Pump Pressure due to Seized Oil Pressure Relief Valve

Models: 2008-2009 Buick Lacrosse, Allure (Canada Only)
2007-2010 Cadillac CTS-V, Escalade
2007-2010 Chevrolet Avalanche, Corvette, Silverado, Suburban, Tahoe
2007-2008 Chevrolet Monte Carlo SS
2007-2009 Chevrolet Impala SS, Trail Blazer
2009-2010 Chevrolet Colorado
2010 Chevrolet Camaro
2007-2010 GMC Envoy, Sierra, Yukon
2009-2010 GMC Canyon
2008-2010 Hummer H2
2008-2010 H3 Alpha
2008 Pontiac Grand Prix GXP
2008-2010 Pontiac G8 GT
2007-2009 Saab 97x
with the Following Aluminum V8 Engine RPOs:
L76, L77, L92, L94, L99, L9H, LC9, LH6, LH8, LH9, LS2, LS3, LS4, LS7, LS9, LSA, LZ1

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:

Some customers may complain of low oil pressure, no oil pressure, and/or engine noise, which may be the result of a sticking oil pump pressure relief valve. In some instances, this may occur intermittently if the valve frees up when the engine cools down.
Recommendation/Instructions:

If SI diagnosis isolates low mechanical oil pressure at the oil filter housing and oil pressure sensor, replace the oil pump, flush the oil cooler lines (if equipped), clean the inside of the oil pan, change the oil and filter, and re-evaluate the concern.

Notice: If an engine noise is noticed after replacing the oil pump, follow the SI diagnosis and repair the engine as necessary.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.
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Old 03-22-2010, 02:44 PM   #8
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So should we take this in now or wait till the light comes on and the motor may be bad?
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Old 03-22-2010, 03:14 PM   #9
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Originally Posted by franknbeans View Post
So should we take this in now or wait till the light comes on and the motor may be bad?
I don't think the dealer will do anything until theres a problem.
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Old 03-23-2010, 12:59 PM   #10
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How can we find out if our vehicle is part of this group of cars ?
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Old 03-23-2010, 06:58 PM   #11
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The pump is approx $120 aftermarket, but any idea the price of labor or amount work needed if a person did it themselves. In the last year I just made the warranty on the stepper motor going out on my silverado's speedometer, then spent $600 twice replacing the lim gasket on a 2001 lumina and grand am. Kinda getting tired of spending money on problems gm knows about. $600 is easier to spend than lose the original motor that came with it.
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Old 03-23-2010, 07:29 PM   #12
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Does anyone know what the VIN range of the affected cars is, or is this an across the board concern?
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Old 03-23-2010, 08:19 PM   #13
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Old 03-23-2010, 08:45 PM   #14
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Quote:
Originally Posted by jrhaus76 View Post
not sure thats true. they should have still done the TSB for you... If its a known issue (flaw) it shoud be covered regardless of mods. For example, if your tail shaft fails, you get a new tranny no matter what mods you have done b/c the part is a known issue...
ha ha they are still trying to deny mine output shaft for like two weeks!
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