GMC Sierra 1500 owners have reported 5 problems related to engine oil leaking (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of GMC Sierra 1500 based on all problems reported for the Sierra 1500.
This vehicle has 88400 miles, it out of warranty, which I know this, I use amsoil asm sig series syn sae 0w-20 , 5. 3l gas. Two years ago, I changed oil at richard Buick GMC in dayton, OH and sent a sample of the oil to oil analyzers for an analysis, they set it back, it showed there was a level 4 severe gasoline in the oil. They changed the high speep fule pump, both in jectors, and it thought it was fixed, on 12 - 11 -24 had the oil changed at local boys service center, sent a sample of the oil-to-oil analyzers and recieved back, a severe fuel leak of gasoline in the oil, I don't think that many drivers who have this vehicle know about this dangerous problem, it could cause an engine failure or even worse, general motors needs to fix this perblem.
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all problems of the 2018 GMC Sierra 1500
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I have the 5. 3l engine and it is consuming 3-5 qua of oil about 3 times between oil changes. I have a small leak but doesn't warrant the oil being lost a.
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all problems of the 2008 GMC Sierra 1500
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While driving down road, sudden message of "no oil pressure, turn off engine immediately". Was able to pull over with no power (luckily it was safe to do so at the time). Left a large puddle of oil underneath the front of the vehicle. Also, left large cloud of smoke from oil splashing on hot components underneath vehicle (exhaust, etc. . . ) behind me. Vehicle was undriveable and had to be towed. Large oil leak was the result of a burst oil cooler line. Dealer did not show me the failed part. Unable to confirm nature of "burst".
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all problems of the 2019 GMC Sierra 1500
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Defective castech heads. Leaking antifreeze into engine. Thins out the engine oil and could engine to over heat or sieze up while driving. Gm knows of the defective heads but will not warrenty them. Please can someone please help us poor people who have got stuck with this bad defective design.
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all problems of the 2006 GMC Sierra 1500
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Engine oil leak on or around rear main seal. As oil drips while driving the oil lands on the exhaust pipe and begins to burn. This leak landing on the exhaust while hot can catch on fire.
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all problems of the 2005 GMC Sierra 1500
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