The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Oil leak, 2003 Suburban 6.0, yes I used the thread search...

**MJN** · 09-27-2018, 01:40 PM

I had a similar leak on my '02 Yukon XL 2500 with 6.0L. Had the oil pan gasket replaced twice and also replaced the oil cooler line gasket and still had a leak, used a quart of oil about every 800 miles. I finally had the local GMC dealer tear into it and they found the rear cover leaking around one of the top bolts. They resealed it and it's been dry ever since.

09-27-2018, 01:40 PM	#4
MJN Registered User Join Date: Feb 2000 Location: Maquoketa, Ia/ Orr, Mn Posts: 2,962	Re: Oil leak, 2003 Suburban 6.0, yes I used the thread search... I had a similar leak on my '02 Yukon XL 2500 with 6.0L. Had the oil pan gasket replaced twice and also replaced the oil cooler line gasket and still had a leak, used a quart of oil about every 800 miles. I finally had the local GMC dealer tear into it and they found the rear cover leaking around one of the top bolts. They resealed it and it's been dry ever since. __________________ '51 South Bend Model "9A" '56 Chevy 3600 NAPCO '74 Chevy Cheyenne Super K20-restored on 37's '72 GMC Sierra Custom K2500- in progress '08 GMC Envoy Denali '12 GMC Sierra 2500HD Denali '17 GMC Yukon XL VCCA member #58596 http://www.nohrco.com