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Gmt900 Ly5 Oil Pump Blown!


dubai911

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Posted

donno what went wrong!

 

was doing some off-roading yesterday and suddenly i got the message "OIL PRESSURE LOW STOP ENGINE" !!!!

oil pressure guage was zero, i was hearing clicking noise from the engine.

Had to drive it very very carefully to the farm, but engine stopped 0.5m before i reach. Couldnt tow it as i wasnt close to any paved road or any help.

 

will take it to the dealer tomorrow to check what went wrong!!! any ideas?????

i hope the aftermarket intake + throttle body spacer will not be a reason to void the warranty

 

 

:D

Posted

It seems obvious but..

 

Did it have any oil in it? filter fall off? Recent oil change?

 

I had a neighbor call me last year and ask what could be causing his oil pressure to fluctuate from 0-15 at idle? I asked him if he had changed the oil recently, yes he had and he checked for leaks and there were none. I asked him to check the oil level again... none on the dipstick.. his problem was the old filter gasket stuck to the engine block when he changed the oil and it took a while to blow out and start leaking. He assumed that since he had just changed the oil and there were no leaks when he finished that it was all ok... he had to replace his engine before he was done..

 

Make sure the oil level is correct, if not, then chase the cause... if you take it to the dealer with no oil, you need to have your checkbook ready.

 

good luck and let us know what happens..

Posted
Any oil leaks that you can see?

 

 

-No, no oil leaks...

-Dipstick was showing full oil level (covering all wholes on the stick)

-Oil was changed by dealer in the first free service (900miles)

-As per dealer, truck is due to oil change on 6,000miles (done 5,200 so far) DIC showing 45% oil life

-Engine temp was normal all the way until it went dead

-Clicking noise was worrying me - I hope I didnt break anything inside the engine when was driving back

 

My dealer fixes MAGNA superchargers in its workshop(!), but not K&N intakes.. I hope they dont go nasty on me

 

what do you think the reason of oil pump failure???? yes, I do put pressure on the engine when off-roading .. but does this mean new GM engines cant stand the pressure? I used to have '95 2dr tahoe 5.7 carbo 120k miles & NEVER said no when I floored the pedal

 

 

Thanks guys - I'll keep you posted

 

 

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Posted
Any oil leaks that you can see?

 

 

-No, no oil leaks...

-Dipstick was showing full oil level (covering all wholes on the stick)

-Oil was changed by dealer in the first free service (900miles)

-As per dealer, truck is due to oil change on 6,000miles (done 5,200 so far) DIC showing 45% oil life

-Engine temp was normal all the way until it went dead

-Clicking noise was worrying me - I hope I didnt break anything inside the engine when was driving back

 

My dealer fixes MAGNA superchargers in its workshop(!), but not K&N intakes.. I hope they dont go nasty on me

 

what do you think the reason of oil pump failure???? yes, I do put pressure on the engine when off-roading .. but does this mean new GM engines cant stand the pressure? I used to have '95 2dr tahoe 5.7 carbo 120k miles & NEVER said no when I floored the pedal

 

 

Thanks guys - I'll keep you posted

 

 

post-42519-1200077388_thumb.jpg

 

 

 

Cold air intakes don't void warranty but i would remove the t/b spacer. As far as the oil pressure and your oil pump stuff does break.

Posted

Nice, I love those older two-door Tahoe's. BTW, it's not carbureted, it has throttle body fuel injection. Pull the air cleaner lid and you'll see two down-firing injectors above the butterfly valves.

 

Make sure you take off the CAI and TBS before you go to the dealer. Hopefully they will take care of you.

Posted
Nice, I love those older two-door Tahoe's. BTW, it's not carbureted, it has throttle body fuel injection. Pull the air cleaner lid and you'll see two down-firing injectors above the butterfly valves.

 

 

no s**t! :tumbleweed: shame on me

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