burning oil/replacing cylinders

[UofMZ71]

Had a friend email me this:

"Does your Tahoe have the 5.3 liter V8?
I heard about some issues with burning oil/replacing cylinders. A lady I work with has a Yukon w/58Kmiles on it, and is having to replace the cylinders. Fortunately it was under warranty. The guy at the service department said it is a design flaw and they are doing at least one a week."

anyone else?

 

[06whitess]

I had an issue that warranted a call to the local service manager Monday...There's a TSB for OIL consumption where they install a deflector on the J Vin code 5.3 AFM F/F motors.... Maybe that'll help?

 

[BOSS]

Put some uv die in the coolant and check just below the water pump first, if not there check the rest of the bay.

Otherwise,

GM TSB# 06-06-01-019B (came out 06-12-2007)
Subject: Information on Gradual Coolant Loss Over Time With NO EVIDENCE OF LEAK FOUND


Castech heads I believe...they can test for this TSB

 

[2 E L O]

Had a friend email me this:

"Does your Tahoe have the 5.3 liter V8?
I heard about some issues with burning oil/replacing cylinders. A lady I work with has a Yukon w/58Kmiles on it, and is having to replace the cylinders. Fortunately it was under warranty. The guy at the service department said it is a design flaw and they are doing at least one a week."

anyone else?

How do you replace a cylinder?

Put some uv die in the coolant and check just below the water pump first, if not there check the rest of the bay.

Otherwise,

GM TSB# 06-06-01-019B (came out 06-12-2007)
Subject: Information on Gradual Coolant Loss Over Time With NO EVIDENCE OF LEAK FOUND


Castech heads I believe...they can test for this TSB

The issue seems to be oil loss/consumption, not coolant loss.

I've commonly heard about the 5.3s consuming a little oil. I recall people saying that up to 1 qt per 1,000 miles is within GM's acceptable standards, but I've never seen that in writing from GM...and I, personally, would not be OK with consuming 1 qt per 1,000 miles.

I go about 6,000 miles between oil changes with my Tahoe....only once have I ever had to add any oil...and it was only about 1/2 to 3/4 qt to keep the dipstick happy.

I'm sure if you search around on here, GMFS, Z71Tahoe-Suburban, etc. there are probably additional threads with better/more accurate/more complete information than what I just spewed....

 

[brownridge12]

Is it sorted out right now or it is still the same. it could be due to loss of oil. it is better you take it to the local technician.

 

[UofMZ71]

its not mine so i dont know