No oil pressure at start up, 2001 Tahoe

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Bofiggy

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Local shops are willing to change out the oring however they also require dropping the front drive..yeah yeah.. the kicker is they all will only warrantee job if they change oil pump,WP,etc.. or they wont do it. As well, everyone is booked up for 3+ weeks.

So its down to wrenching for me... Last year this time I changed my timing belt on a lexus- LS400. that was fun. this job seems much easier other than dropping the diffand being under it. all good
 

OR VietVet

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Local shops are willing to change out the oring however they also require dropping the front drive..yeah yeah.. the kicker is they all will only warrantee job if they change oil pump,WP,etc.. or they wont do it. As well, everyone is booked up for 3+ weeks.

So its down to wrenching for me... Last year this time I changed my timing belt on a lexus- LS400. that was fun. this job seems much easier other than dropping the diffand being under it. all good
It's all in the prep beforehand. Nice flat area to work on, proper support by correct size jack stands, great assortment of tools on hand, watch multiple you tube videos for the same job. One thing my girl did for me is she got me 3 4x8 3/8" roll out pads, like a yoga mat, that I put on the ground and lay on. Have plenty of drain pans and an appropriate assortment of capped carriers to put the fluids in for easy disposal. Make sure you have all needed components for replacement and be methodical about each step. Have plenty of shop towels. Have a friend there if can that is a second hand and can also hand you tools as needed. Don't let a roadblock piss you off. It will happen and just take a deep breath and move on. Just remember the money you are saving and plan on doing something with that saved money.

Remember, "cleanliness is next to Godliness". Clean as you go and be sure all surfaces are clean as you reassemble.
 

Douglas Friedberg

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Great info you make me feel good at 250,000 and rolling. By the way a great check for that oil pump seal is overfill the crankcase oil by 1-2 qts won’t hurt a thing and if that problem goes away you know what you have to do and you’ll be nicer to motor that way
 

OR VietVet

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Great info you make me feel good at 250,000 and rolling. By the way a great check for that oil pump seal is overfill the crankcase oil by 1-2 qts won’t hurt a thing and if that problem goes away you know what you have to do and you’ll be nicer to motor that way
The overfill of the oil should not be left that way. The method of overfill and point downhill and see if problem stops, is a method for diagnosis but the overfill should not be left that way.
 

nonickatall

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Local shops are willing to change out the oring however they also require dropping the front drive..yeah yeah.. the kicker is they all will only warrantee job if they change oil pump,WP,etc.. or they wont do it. As well, everyone is booked up for 3+ weeks.

So its down to wrenching for me... Last year this time I changed my timing belt on a lexus- LS400. that was fun. this job seems much easier other than dropping the diffand being under it. all good
Changing the o-ring is no problem at all. You have to loosen and remove the carrier that is screwed across the bottom of the axle with four screws. Then you have to loosen the differential, which is screwed in three places, and move it down a little. Then you unscrew two oil lines that go to the oil cooler and then the oil pan. Then the oil pipe, change the O-ring and everything back.

I did this on the lift and it took maybe 1.5 hours.

It's definitely not very comfortable lying under the car, but it works as well.
 

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