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john

john 3/3/2018

2002 GMC Yukon XL 2500 SLE 8 Cyl 8.10L

Engine

accessive oil consumption

my suv : 8 cylinder 8.1 l getting oil consumption about every 800 m. 2.5 quarts from oil change.no smoke .no engine noise.just keep adding oil.after 3000 m i change oil.oil is not getting dirt or color much black.some say but a catch can.pls guide me for best solution

3 Answers


Jimm

Jimm 3/3/2018

First question - what is the vehicle overall mileage? What is the mileage on the engine?

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john

john 3/3/2018

it have 85.000 miles

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Jimm

Jimm 3/3/2018

GM actually has a TSB for the oil burning issue for the 6.0L and it might help out on the 8.1L, it simply states to change the PCV valve. It's a cheap enough fix for those if you don't want to fight with the dealer over it.

There is also an informational bulletin from GM but the dealer has to call it in to get the full details, here is the number and description of the bulletin - you will need it if you are going to talk to the dealer, they WILL NOT offer up this info, and might not even know about it.

#A001705C 8.1L L18 ENGINE POOR OIL ECONOMY - 8.1 CONSUMPTION DIAGNOSIS GUIDE HIGH HOT INTERNAL LEAK LEVEL LOW MISFIRE NOISE PLUG RING SEAL A001705C SUPERSEDES A001705A A001705

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