How to valve stem seal and Spring replacement on 4.3L V6 engine for Chevrolet Avalanche,Silverado,Suburban,Tahoe and GMC Sierra,Yukon,Yukon Denali,Yukon XL?

To replace the Valve Stem Oil Seals, start by removing the valve cover(s) from the cylinder head(s), and if replacing all seals, remove all spark plugs too. If replacing all seals, go according to firing order (1-6-5-4-3-2) and begin with cylinder number 1 i.e. skip 120 degrees clockwise for each cylinder. Position the piston in that selected cylinder at Top Dead Center on the compression stroke by rotating the crankshaft. For that target cylinder head, remove all rocker arms, pushrods, and support bars. Screw an adapter into the spark plug hole and attach a compressed air source which applies approximately 90 to 100 psi of pressure to retain valves position. Shop rags should be inserted into the holes on top of the cylinder heads to prevent foreign objects from entering into the engine. A removal tool such as a valve spring compressor can help compress retainers together with valve springs thus allowing keepers' elimination. Old Valve Stem Oil Seal is then taken out after getting rid of spring retainer or rotator together with its assembly. Keep the rubber band or tape on hand for holding down the valve stem so that it does not fall out when releasing air pressure later on. While installing, ensure there is no damage on valve stem but it moves freely in guide without sticking inside it. Air pressure should be reapplied to hold down the valve while taking off tape or rubber bands. After applying some engine oil for lubrication purposes around the stem ends of valves install new seals after tapping them gently with a deep socket or tool used for installation of a seal into place, care being taken not to twist or cock these seals in any way at this point also check if garter spring is properly positioned around the top of each seal before proceeding further with the installation process of valve spring and damper if applicable closely-wound spring coils facing towards cylinder head while securing either rotator or retainer for valve spring. Disconnect the air hose, remove the adapter from the spark plug hole, and repeat the process for the remaining cylinders, aligning each piston with TDC on the compression stroke. Finally, reinstall the rocker arms, support bars, and pushrods, followed by the valve cover(s), spark plug(s), and wires, and start and run the engine, checking for any oil leaks or unusual noises from the valve cover area.

Genuine GMC Yukon Valve Stem Oil Seal

Engine Valve Seal

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19 Valve Stem Oil Seals found

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GMC Yukon Seal Kit,Exhaust Valve Stem Oil
Part Number: 12482062
$37.95 MSRP: $66.04
You Save: $28.09 (43%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: SEAL KIT, Engine Valve; Valve Seal, Valve Spring
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2014 GMC Yukon | 1/2 TON, 3/4 TON, XL 1/2 TON, XL 3/4 TON, YUKON XL/DENALI XL/ESCALADE ESV, YUKON/DENALI/ESCALADE | 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.0L Flex, 8 Cyl 6.2L, 8 Cyl 6.2L Flex
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GMC Yukon Seal Kit,Intake Valve Stem Oil
Part Number: 12482063
$36.39 MSRP: $60.23
You Save: $23.84 (40%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: SEAL KIT, Engine Valve; Valve Seal
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2014 GMC Yukon | 1/2 TON, 3/4 TON, XL 1/2 TON, XL 3/4 TON, YUKON XL/DENALI XL/ESCALADE ESV, YUKON/DENALI/ESCALADE | 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.0L Flex, 8 Cyl 6.2L, 8 Cyl 6.2L Flex
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GMC Yukon Seal, Int Vlv Stem Oil
Part Number: 12689007
$5.14 MSRP: $8.09
You Save: $2.95 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Valve Seal
- Replaces: 12645473
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2015-2021 GMC Yukon | 1/2 TON, 1500 4 DOOR, 1500 4 DOOR SUV, 1500 4 DOOR UTILITY, YUKON XL/DENALI XL/ESCALADE ESV, YUKON/DENALI/ESCALADE | 8 Cyl 5.3L, 8 Cyl 6.2L
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GMC Yukon Seal, Exh Vlv Stem Oil
Part Number: 12689006
$4.69 MSRP: $7.39
You Save: $2.70 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Valve Seal
- Replaces: 12645472
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2015-2021 GMC Yukon | 1/2 TON, 1500 4 DOOR, 1500 4 DOOR SUV, 1500 4 DOOR UTILITY, YUKON XL/DENALI XL/ESCALADE ESV, YUKON/DENALI/ESCALADE | 8 Cyl 5.3L, 8 Cyl 6.2L
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GMC Yukon Seal,Valve Stem Oil
Part Number: 10212810
$4.83 MSRP: $7.60
You Save: $2.77 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: SEAL, Engine Valve; Valve Seal, Valve Seal Kit
- Replaces: 460483, 00460483
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-2000 GMC Yukon | CLASSIC 2 DOOR 1/2 TON, CLASSIC 4 DOOR 1/2 TON | 8 Cyl 5.7L
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GMC Yukon Seal Kit,Exhaust Valve Stem Oil
Part Number: 12457652
$20.17 MSRP: $31.73
You Save: $11.56 (37%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: SEAL KIT, Engine Valve; Valve Seal
- Replaces: 12560189
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000-2001 GMC Yukon | XL 1/2 TON, XL 3/4 TON, YUKON/DENALI/ESCALADE | 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 6.0L
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GMC Yukon Seal Kit,Valve Stem Oil
Part Number: 12533586
$22.66 MSRP: $35.65
You Save: $12.99 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: SEAL KIT, Engine Valve; Valve Seal
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000-2001 GMC Yukon | XL 1/2 TON, XL 3/4 TON, YUKON/DENALI/ESCALADE | 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 6.0L
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GMC Yukon Seal, Exhaust Valve Stem Oil
Part Number: 12564852
$13.05 MSRP: $14.63
You Save: $1.58 (11%)
ADD TO CART
Product Specifications
- Other Name: SEAL, Engine Valve; Valve Seal
- Replaces: 12558674
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-2000 GMC Yukon | CLASSIC 2 DOOR 1/2 TON, CLASSIC 4 DOOR 1/2 TON | 8 Cyl 5.7L
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GMC Yukon Seal,Valve Stem Oil
Part Number: 97212994
$13.05
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: SEAL, Engine Valve; Valve Seal
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2005 GMC Yukon | 3/4 TON, XL 3/4 TON
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GMC Yukon Seal,Valve Stem Oil
Part Number: 10214034
$1.57 MSRP: $2.60
You Save: $1.03 (40%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: SEAL, Engine Valve; Seal Ring, Valve Seal, Valve Seal O-Rings
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1997 GMC Yukon | CLASSIC 2 DOOR 1/2 TON, CLASSIC 4 DOOR 1/2 TON | 8 Cyl 5.7L, 8 Cyl 6.5L Diesel
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GMC Yukon Seal Assembly, Vlv Stem Oil
Part Number: 55484799
$2.61 MSRP: $4.12
You Save: $1.51 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Valve Seal
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021 GMC Yukon | 1/2 TON, YUKON XL/DENALI XL/ESCALADE ESV, YUKON/DENALI/ESCALADE | 6 Cyl 3.0L Diesel
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GMC Yukon Seal, Valve Stem Oil
Part Number: 12555601
$7.10 MSRP: $11.76
You Save: $4.66 (40%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: SEAL, Engine Valve; Valve Seal
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2006 GMC Yukon | 3/4 TON, XL 3/4 TON | 8 Cyl 8.1L
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GMC Yukon Seal, Exhaust Valve Stem Oil
Part Number: 23502552
$2.63 MSRP: $7.77
You Save: $5.14 (67%)
ADD TO CART
Product Specifications
- Other Name: SEAL, Engine Valve; Valve Seal
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1994-1997 GMC Yukon | CLASSIC 2 DOOR 1/2 TON, CLASSIC 4 DOOR 1/2 TON | 8 Cyl 6.5L Diesel
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GMC Yukon Seal Kit,Valve Stem Oil
Part Number: 12511890
Product Specifications
- Other Name: SEAL KIT, Engine Valve; Valve Seal, Valve Seal Kit
- Replaces: 10132715, 14033546
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1995 GMC Yukon | CLASSIC 2 DOOR 1/2 TON, CLASSIC 4 DOOR 1/2 TON | 8 Cyl 5.7L
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GMC Yukon Seal, Exhaust Valve Stem Oil
Part Number: 10147883
Product Specifications
- Other Name: SEAL, Engine Valve
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1995 GMC Yukon | CLASSIC 2 DOOR 1/2 TON, CLASSIC 4 DOOR 1/2 TON | 8 Cyl 5.7L
View related parts
GMC Yukon Seal, Exhaust Valve Stem Oil
Part Number: 10147882
Product Specifications
- Other Name: SEAL, Engine Valve; Valve Seal
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1995 GMC Yukon | CLASSIC 2 DOOR 1/2 TON, CLASSIC 4 DOOR 1/2 TON | 8 Cyl 5.7L
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GMC Yukon Seal, Exhaust Valve (.015 Outside)
Part Number: 10168534
Product Specifications
- Other Name: SEAL, Engine Valve
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1995 GMC Yukon | CLASSIC 2 DOOR 1/2 TON, CLASSIC 4 DOOR 1/2 TON | 8 Cyl 5.7L
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GMC Yukon Seal Assembly, Inlet Valve Stem Oil .030" Oversize (Free Of Asbestos)
Part Number: 14037716
Product Specifications
- Other Name: SEAL, Engine Valve; Valve Seal
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1995 GMC Yukon | CLASSIC 2 DOOR 1/2 TON, CLASSIC 4 DOOR 1/2 TON | 8 Cyl 5.7L
View related parts
GMC Yukon Seal Assembly, Intake Valve Stem Oil .015" Oversize (Free Of Asbestos)
Part Number: 14037715
Product Specifications
- Other Name: SEAL, Engine Valve
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1995 GMC Yukon | CLASSIC 2 DOOR 1/2 TON, CLASSIC 4 DOOR 1/2 TON | 8 Cyl 5.7L

GMC Yukon Valve Stem Oil Seal Parts Questions & Experts Answers

Seal Kit,Intake Valve Stem Oil
12482063
Q: How to valve stem seal and Spring replacement on 4.3L V6 engine for Chevrolet Avalanche,Silverado,Suburban,Tahoe and GMC Sierra,Yukon,Yukon Denali,Yukon XL?
A: To replace the Valve Stem Oil Seals, start by removing the valve cover(s) from the Cylinder Head(s), and if replacing all seals, remove all spark plugs too. If replacing all seals, go according to firing order (1-6-5-4-3-2) and begin with cylinder number 1 i.e. skip 120 degrees clockwise for each cylinder. Position the piston in that selected cylinder at Top Dead Center on the compression stroke by rotating the crankshaft. For that target cylinder head, remove all Rocker Arms, Pushrods, and support bars. Screw an adapter into the spark plug hole and attach a compressed air source which applies approximately 90 to 100 psi of pressure to retain valves position. Shop rags should be inserted into the holes on top of the cylinder heads to prevent foreign objects from entering into the engine. A removal tool such as a valve spring compressor can help compress retainers together with valve springs thus allowing keepers' elimination. Old Valve Stem Oil Seal is then taken out after getting rid of spring retainer or rotator together with its assembly. Keep the rubber band or tape on hand for holding down the valve stem so that it does not fall out when releasing air pressure later on. While installing, ensure there is no damage on valve stem but it moves freely in guide without sticking inside it. Air pressure should be reapplied to hold down the valve while taking off tape or rubber bands. After applying some engine oil for lubrication purposes around the stem ends of valves install new seals after tapping them gently with a deep socket or tool used for installation of a seal into place, care being taken not to twist or cock these seals in any way at this point also check if garter spring is properly positioned around the top of each seal before proceeding further with the installation process of valve spring and damper if applicable closely-wound spring coils facing towards cylinder head while securing either rotator or retainer for valve spring. Disconnect the air hose, remove the adapter from the spark plug hole, and repeat the process for the remaining cylinders, aligning each piston with TDC on the compression stroke. Finally, reinstall the rocker arms, support bars, and pushrods, followed by the valve cover(s), spark plug(s), and wires, and start and run the engine, checking for any oil leaks or unusual noises from the valve cover area.