Lasted 268,000 Miles Then Catastrophic Failure! GM 6.2L L92 Engine Teardown With MASSIVE Damage!

For parts visit www.Importapart.com or email us at [email protected] For More I Do Cars Content, Check out my wife's channel at ‪@TheCarWifeLife‬ For Awesome car shirts visit Blipshift using this link: https://www.blipshift.com/?utm_source... Today we have one for those who crave carnage. This is the 6.2L L92 V8 out of a 2009 GMC Yukon Denali I bought from a tow lot. This was an abandoned vehicle that I had ZERO history on, so once we pulled it in to check it out, we quickly realized why someone walked away from it. The engine is VERY VERY bad. At 268K, what killed this Denali engine? Let's take it apart and find out. Why am I doing this? My name is Eric and I own and run Importapart, a full service auto dismantling business. Part of our model includes buying blown up and bad engines to dismantle for parts. We salvage the good, sellable parts and recycle rest. No, we don't rebuild engines but we do sell parts to people who do! As always I hope you enjoyed this video. I love all of the comments, feedback and even the criticism. Catch you on the next one! -Eric 00:00 Intro 04:00 Popping the plug wires off, removing plugs and inspecting 04:45 Malice in the combustion palace! 05:43 Removing the intake manifold and inspecting the intake ports 07:54 Peeling off the RH Valve cover. Did they EVER change the oil? Yikes 08:53 Cramming the rocker arms loose, removing valve train and pushing the pull rods out. 10:33 Crackin' the RH Headbolts loose and lifting the head 11:29 Inspecting the pistons, bores and cylinder head. This thing ATE something it wasn't supposed to! 13:14 FAILED THE SCIENCE TEST 13:35 unbolting the LH valve cover and it somehow looks worse!? 14:03 Cramming the left rocker arms loose and removing valve train. All looks better than I anticipated. 15:29 Crackin' the LH head bolts loose and lifting the head 16:00 We seem to be missing something important 18:02 SCIENCE 2.0, Its WORSE 18:11 Water pump removal and disposal 19:06 The Great Harmonic Balancer Fight Of 2025 24:57 Removing the timing cover, OH, Now it makes sense. Someone has been here. 25:48 Pulling the lifters and trays for inspection. Are these original? NO AFM HERE. 26:26 Unbolting the cam gear, removing and inspecting the camshaft 27:55 Block hole reveal 28:25 Unbolting the blast basket formally known as the oil pan 29:29 So. Much. Shrapnel 30:36 THE SMOKING GUN 31:45 Dropping the FULL windage tray. It broke a WHAT? 33:16 removing and dismantling the oil pump for inspection. Why did they replace this? what were they chasing? 35:26 Buy some cool shirts 36:10 Removing the first two connecting rods and pistons 37:01 Removing the second two disconnecting rods 39:50 Unbolting the third four rods and pistons 40:42 Removing the main cap bolts 41:28 Pulling the main caps and lifting the crank after not so dangerously adjusting the engine stand 43:58 Complete rotating assembly inspection. Crankshaft, bearings, pistons, rings, rods, block. ITS ALL JUNK! 48:54 Dismantling a cylinder head to reveal the extent of damage. 51:29 A Partial! 52:45 Summary