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Topic Review (Newest First)
08-10-2012 10:42 PM
bigdog7373 Good to hear it worked out. Theyre great engines. I had one with 230k on it and still ran like a dream when i sold it.
08-10-2012 09:19 PM
lt1silverhawk Thanks bigdog. I told him to replace that crankshaft sensor as you suggested. He took care of it today and says the truck seems to be running perfectly now. Thanks!
08-09-2012 06:59 PM
bigdog7373 Well replace the sensor and see how it goes. Even if it doesnt fix the problem it still has to be done. The ls engine's aren't prone to any problems as far as i know so it's got to be something small. Can you post a video of it?
08-09-2012 05:45 PM
lt1silverhawk To my understanding - and this may not be correct - the oil pressure seemed to be fine but the gauge would bounce up and down from time to time due to a faulty sensor, which has now been replaced. Should I ask ask him to fire it up with the new sensor now installed, and keep and eye on the oil gauge, or would that possibly risk further damage?

EDIT: He says the pressure stay a little above 80 psi. Also, the truck was just hooked up to the computer and it says crankshaft position sensor.
08-09-2012 05:30 PM
LATECH Does the oil pressure drop when it warms up?
08-09-2012 05:13 PM
2006 Chevy Avalanche 4x4 - Engine Sputters/Shuts Down After Warming Up

Hi All,

This question is regarding a truck for a friend of mine. Its a 2006 Chevy Avalanche with a 5.3 Flex Fuel with 69,000 miles on the odometer.

The truck was recently started and driven on a 4-mile round trip, when the engine began making a clanking noise and then shut down. The truck continues to do this repeatedly every time after a cold start. Its is started and, as soon as it warms up, it sputters and shuts down. It has not been driven since the first time it shut down. So far, only the oil pump sensor has been replaced.

A backyard mechanic believes it might be a clogged a oil pump screen or a bad bearing, for which he is quoting at a $4,000 rebuild. My friend is stumped at this point and is on a limited budget. I decided to ask on his behalf and get an opinion from the members here to help him out. If more details are needed, please let me know and I will ask him and report back.

Thank you in advance!

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