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How to change oil pan gasket on 99 gmc yukon 5.7 vortec v8

Its a two wheel drive yukon can't get oil pan pass bellhousing on transmission and crossmember

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Posted on Jan 02, 2017

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SOURCE: Oil Pan Gasket Replacement - How to - GMC Yukon 2000








Removal Procedure

Important: The original oil pan gasket is retained and aligned to the oil pan by rivets. When installing a new gasket, it is not necessary to install new rivets.
DO NOT reuse the oil pan gasket. When installing the oil pan, install a NEW oil pan gasket.

Caution: Refer to Battery Disconnect Caution in Service Precautions.

  • Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure
  • Remove the front differential if equipped with four wheel drive. Refer to Differential Carrier Assembly Replacement in Front Axle.
  • Remove the under body shield from the vehicle
  • Remove the oil pan underbody shield.
  • Remove the cross brace if equipped.
  • Drain the engine oil and remove the engine oil filter. Refer to Engine Oil and Oil Filter Change
  • Remove the lower transmission-to-oil pan bolts
  • Disconnect the oil level sensor electrical connector.
  • Remove two front wiring harness retainer bolts.


10. Remove the engine wiring harness retainer bolts from the engine oil pan.
11. Remove the engine oil cooler pipe to oil pan bolt.
12. Remove the transmission oil cooler pipe retainer and the bolt from the oil pan.
13. Remove the starter motor. Refer to Starter Motor Replacement.
14. Remove the left closeout cover and bolt.
15. Remove the engine oil pan. Refer to Oil Pan Removal.

Installation Procedure

Important: The alignment of the structural oil pan is critical. The rear bolt hole locations of the oil pan provide mounting points for the transmission bellhousing. To ensure the rigidity of the powertrain and correct transmission alignment, it is important that the rear of the block and the rear of the oil pan must NEVER protrude beyond the engine block and transmission bellhousing plane.

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Posted on Jan 27, 2009

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SOURCE: oil pan leak

2-wheel drive? or 4x4? If its 2-wheel i see no problem, 4x4 you might have a little more trouble because of the front rearend. You also might want to jack up engine to give yourself more room and you may have to unbolt the oil pump and take them both out at the same time.

Posted on Mar 31, 2009

wilsodfarm
  • 986 Answers

SOURCE: Torque Specs for Head Bolts on 1997 GMC Sierra V8 5.0 Vortec?

.0L Torque Specs Belhousing to engine bolts 28-38 ft/lbs Camshaft sprocket bolt 40-45 ft/lbs Camshaft thrust plate to engine block bolts 108-144 in/lbs Crankshaft pulley to vibration damper bolts 35-50 ft/lbs Cylinder head bolts -1979-1992 --Step 1 55-65 ft/lbs --Step 2 65-72 ft/lbs -1993-up --Step 1 25-35 ft/lbs --Step 2 45-55 ft/lbs --Step 3 75-85 ft/lbs Differential shaft lock bolt 15-30 ft/lbs Driveshaft U-joint to pinion flange bolts 70-95 ft/lbs Exhaust manifold bolts 26-32 ft/lbs Flywheel mounting bolts 75-85 ft/lbs Front engine mount nuts 72-98 ft/lbs Intake manifold to head bolts --Step 1 96 in/lbs --Step 2 16ft/lbs --Step 3 23-25 ft/lbs Intake manifold (upper intake to lower) 12-18 ft/lbs Oil filter insert to engine block adapter bolt 20-30 ft/lbs Oil pan mounting bolts -1979 --Step 1 (Large bolts) 11-13 ft/lbs --Step 1 (Short bolts) 7-9 ft/lbs --Step 2 (Large Bolts) 15-17 ft/lbs --Step 2 (Short Bolts) 10-12 ft/lbs -1980 to 1987 9-11 ft/lbs -1988 to 1993 6-9 ft/lbs -1994-up 110-144 in/lbs Oil pickup tube to main bearing cap nut 22-32 ft/lbs Oil pickup tube to oil pump bolts -1979 to 1987 10-15 ft/lbs -1988-up 12-18 ft/lbs Oil pump mounting bolts 22-32 ft/lbs Pinion bearing preload 8-14 in/lbs Pressure plate to flywheel bolts 12-24 ft/lbs Rocker arm fulcrm bolts 18-25 ft/lbs Spark plugs 7-14 ft/lbs Timing chain cover bolts 12-18 ft/lbs Vibration damper to crackshaft bolt 110-130 ft/lbs Wheel lug nuts 85-105 ft/lbs

Posted on Mar 16, 2010

bigguy810
  • 448 Answers

SOURCE: need to take off oil

4X4 ALWAYS GIVE A LITTLE MORE ROOM TO WORK DRAIN THE OIL TAKE OUT ALL THE BOLTS YOU ARE GOING TO HAVE TO PRY THE PAN DOWN IF YOU NEED MORE ROOM JACK THE TRUCK A LITTLE WILE YOU HAVE THE PAN DOWN MAKE SURE TO SCRAPE THE ENGINE BLOCK AND PAN ALSO CLEAN THE PAN VERY WELL AND PAINT ORANGE THATS GM COLOR WHEN YOU ARE READY TO PUT THE PAN BACK IN USE PERMATEX (BLACK) IT WORKS VERY WELL AROUND OIL THE REASON FOR PAINTING IS TO CHECK FOR ANY LEAKS JUST TIGHTEN THE BOLTS DOWN TIGHT I HOPE THIS HELPS GOOD LUCK BOB

Posted on Apr 25, 2011

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I just changed my oil pan gasket on my 2001 GMC Yukon Denali. Once all bolts are off the oil pan, the pan and off the block it has no clearance because the differential is in the way. I removed half the diffential since the housing is split in the center. You will see bolts on the differential housing, remove those. But before the diff can come out to make room for the pan to drop you have to remove the axel attached to the diff on the passenger side. Once the axel is off the diff you have room to remove half the diff. Make sure to drain the gear oil first. It take a bit off pulling and wiggling but it will come off. Once that's clear the oil pan is completely free to come out. Hope this helps.

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