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2010 gmc slt c.c 4x4 6.2 oil leak

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Old 05-28-2011, 08:35 PM
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Default 2010 gmc slt c.c 4x4 6.2 oil leak

The truck has 38k miles I noticed a slight oil leak at 7k took to the dealer 6 times since then and still unresolved... very pissed customer.the leak has got to the point of dripping on the driveway. no modes ever done just tow with it, the oil changed every 4000 with m1 or amsoil syn.40%.Anyone else with oil leak issues?
Old 05-29-2011, 04:31 AM
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Low miles on mine still. I haven't even done an oil change yet. Lol. I would go to another dealer if it's an option. That's a crock; it isn't that hard to find a leak.
Old 05-29-2011, 07:26 AM
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look for a tsb... I came across it one day doing research on the 6.2l, I know there was one about one of the seals on the back of the motor being known to leak, not sure if it applies to your year/model or not
Old 05-29-2011, 07:28 AM
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I have been to 3 different dealers they have put dye in the oil to locate and so far the oil pan gaskit has been changed twice the oil cooler lines once the oil cooler lines gaskit on another occasion and the oil pressure sending unit.The oil collects around the bottom of the bell housing, and no it not the oil filter leaking. the only thing left is the rear main, the truck is 17 months old
Old 05-29-2011, 07:33 AM
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rear main seal or they didnt seal the rear cover to the oil pan good enough. also there is the chance the oil sender at the top of the motor on the very back of the valley cover could be leaking.
Old 05-29-2011, 07:58 AM
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I have checked the oil pressure sending sensor myself and i cant feel any oil around the area
Old 05-29-2011, 09:10 AM
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did you pull the inspection cover on the bellhousing and see if you can tell where the oil
is coming from?
Old 05-29-2011, 09:59 AM
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yup and there is oil residue in there, the trans has been out twice for the oil pan gaskit repair, you think maybe because the harsh winter the aluminum is exspanding and retracting and causing this issue. or the bonehead mec stripped some of the oil pan bolts and now the block needs work
Old 10-12-2011, 08:40 AM
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I just realized that I have a oil leak at 6,xxx miles. It looks like it it's coming from the oil filter and oil plug.
Old 10-14-2011, 07:11 AM
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rear engine seal, changed it twic after adding a jegs oil catch can


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