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 Chevrolet Suburban Valve Stem Oil Seal

Engine Valve Seal

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22 Valve Stem Oil Seals found

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Chevrolet Suburban Seal Kit,Exhaust Valve Stem Oil
Part Number: 12482062
$41.42 MSRP: $66.04
You Save: $24.62 (38%)
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:
- 2016-2019 Chevrolet Suburban | 3500 4 DOOR UTILITY | 8 Cyl 6.0L Flex
- 2001-2014 Chevrolet Suburban | 1/2 TON, 1500 CREW CAB, 1500 CREW CAB LONG BOX, 1500 CREW CAB STANDARD BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3/4 TON, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS EXTENDED CAB 185.5, 3500 CHASSIS REGULAR CAB 137.0, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB, 4 DOOR 1/2 TON, CLASSIC 1500 CREW CAB LONG BOX, CLASSIC 1500 EXTENDED CAB LONG BOX, CLASSIC 1500 EXTENDED CAB STANDARD BOX, CLASSIC 1500 REGULAR CAB LONG BOX, CLASSIC 1500 REGULAR CAB STANDARD BOX, CLASSIC 2500 CREW CAB LONG BOX, CLASSIC 2500 CREW CAB STANDARD BOX, CLASSIC 2500 EXTENDED CAB LONG BOX, CLASSIC 2500 EXTENDED CAB STANDARD BOX, CLASSIC 2500 REGULAR CAB, CLASSIC 3500 CHASSIS EXTENDED CAB 161.5, CLASSIC 3500 CREW CAB, CLASSIC 3500 EXTENDED CAB, CLASSIC 3500 REGULAR CAB, EXT 1/2 TON, EXT 3/4 TON, XL 1/2 TON, XL 3/4 TON, YUKON/DENALI | 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.0L Flex
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Chevrolet Suburban 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:
- 2001-2004 Chevrolet Suburban | 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, CLASSIC 1500 EXTENDED CAB LONG BOX, CLASSIC 1500 EXTENDED CAB STANDARD BOX, CLASSIC 1500 REGULAR CAB LONG BOX, CLASSIC 1500 REGULAR CAB STANDARD BOX
- 1996-1999 Chevrolet Suburban | 1/2 TON, 3/4 TON | 8 Cyl 5.7L
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Chevrolet Suburban 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 Chevrolet Suburban | 1/2 TON, 1500 CREW CAB, 1500 CREW CAB LONG BOX, 1500 CREW CAB STANDARD BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3/4 TON, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS EXTENDED CAB 185.5, 3500 CHASSIS REGULAR CAB 137.0, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB, 4 DOOR 1/2 TON, CLASSIC 1500 CREW CAB LONG BOX, CLASSIC 1500 EXTENDED CAB LONG BOX, CLASSIC 1500 EXTENDED CAB STANDARD BOX, CLASSIC 1500 REGULAR CAB LONG BOX, CLASSIC 1500 REGULAR CAB STANDARD BOX, CLASSIC 2500 CREW CAB LONG BOX, CLASSIC 2500 CREW CAB STANDARD BOX, CLASSIC 2500 EXTENDED CAB LONG BOX, CLASSIC 2500 EXTENDED CAB STANDARD BOX, CLASSIC 2500 REGULAR CAB, CLASSIC 3500 CHASSIS EXTENDED CAB 161.5, CLASSIC 3500 CREW CAB, CLASSIC 3500 EXTENDED CAB, CLASSIC 3500 REGULAR CAB, EXT 1/2 TON, EXT 3/4 TON, XL 1/2 TON, XL 3/4 TON, YUKON/DENALI | 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.0L Flex
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Chevrolet Suburban 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:
- 2015-2024 Chevrolet Suburban | 1/2 TON, 1500 4 DOOR UTILITY | 8 Cyl 5.3L, 8 Cyl 6.2L
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Chevrolet Suburban 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:
- 2015-2024 Chevrolet Suburban | 1/2 TON, 1500 4 DOOR UTILITY | 8 Cyl 5.3L, 8 Cyl 6.2L
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Chevrolet Suburban 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: 00460483, 460483
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2004 Chevrolet Suburban | 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, CLASSIC 1500 EXTENDED CAB LONG BOX, CLASSIC 1500 EXTENDED CAB STANDARD BOX, CLASSIC 1500 REGULAR CAB LONG BOX, CLASSIC 1500 REGULAR CAB STANDARD BOX
- 1992-1999 Chevrolet Suburban | 1/2 TON, 3/4 TON | 8 Cyl 5.7L
- 1985-1989 Chevrolet Suburban | 1/2 TON, 3/4 TON | 8 Cyl 5.0L, 8 Cyl 5.7L
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Chevrolet Suburban 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
ADD TO CART
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 Chevrolet Suburban | 1/2 TON, 1500 CREW CAB LONG BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3/4 TON, 3500 CHASSIS EXTENDED CAB 185.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB, 4 DOOR 1/2 TON, CLASSIC 1500 CREW CAB LONG BOX, CLASSIC 1500 EXTENDED CAB LONG BOX, CLASSIC 1500 EXTENDED CAB STANDARD BOX, CLASSIC 1500 REGULAR CAB LONG BOX, CLASSIC 1500 REGULAR CAB STANDARD BOX, CLASSIC 2500 CREW CAB LONG BOX, CLASSIC 2500 CREW CAB STANDARD BOX, CLASSIC 2500 EXTENDED CAB LONG BOX, CLASSIC 2500 EXTENDED CAB STANDARD BOX, CLASSIC 2500 REGULAR CAB, CLASSIC 3500 CHASSIS EXTENDED CAB 161.5, CLASSIC 3500 CREW CAB, CLASSIC 3500 EXTENDED CAB, CLASSIC 3500 REGULAR CAB, XL 1/2 TON, XL 3/4 TON, YUKON/DENALI | 8 Cyl 5.3L, 8 Cyl 6.0L
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Chevrolet Suburban 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 Chevrolet Suburban | 1/2 TON, 1500 CREW CAB LONG BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3/4 TON, 3500 CHASSIS EXTENDED CAB 185.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB, 4 DOOR 1/2 TON, CLASSIC 1500 CREW CAB LONG BOX, CLASSIC 1500 EXTENDED CAB LONG BOX, CLASSIC 1500 EXTENDED CAB STANDARD BOX, CLASSIC 1500 REGULAR CAB LONG BOX, CLASSIC 1500 REGULAR CAB STANDARD BOX, CLASSIC 2500 CREW CAB LONG BOX, CLASSIC 2500 CREW CAB STANDARD BOX, CLASSIC 2500 EXTENDED CAB LONG BOX, CLASSIC 2500 EXTENDED CAB STANDARD BOX, CLASSIC 2500 REGULAR CAB, CLASSIC 3500 CHASSIS EXTENDED CAB 161.5, CLASSIC 3500 CREW CAB, CLASSIC 3500 EXTENDED CAB, CLASSIC 3500 REGULAR CAB, XL 1/2 TON, XL 3/4 TON, YUKON/DENALI | 8 Cyl 5.3L, 8 Cyl 6.0L
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Chevrolet Suburban 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 Chevrolet Suburban | 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3/4 TON, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS EXTENDED CAB 185.5, 3500 CHASSIS REGULAR CAB 137.0, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB, CLASSIC 2500 CREW CAB LONG BOX, CLASSIC 2500 CREW CAB STANDARD BOX, CLASSIC 2500 EXTENDED CAB LONG BOX, CLASSIC 2500 EXTENDED CAB STANDARD BOX, CLASSIC 2500 REGULAR CAB, CLASSIC 3500 CHASSIS EXTENDED CAB 161.5, CLASSIC 3500 CREW CAB, CLASSIC 3500 EXTENDED CAB, CLASSIC 3500 REGULAR CAB, EXT 3/4 TON, XL 3/4 TON
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Chevrolet Suburban Seal,Valve Stem Oil
Part Number: 10114119
$13.05 MSRP: $14.32
You Save: $1.27 (9%)
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:
- 1990-1999 Chevrolet Suburban | 1/2 TON, 3/4 TON | 8 Cyl 7.4L
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Chevrolet Suburban Seal,Valve Stem Oil
Part Number: 10214034
$1.65 MSRP: $2.60
You Save: $0.95 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: SEAL, Engine Valve; Seal Ring, Valve Seal, Valve Seal O-Ring
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1999 Chevrolet Suburban | 1/2 TON, 3/4 TON | 8 Cyl 5.0L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel, 8 Cyl 6.5L Diesel
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Chevrolet Suburban Seal, Valve Stem Oil
Part Number: 12555601
$7.47 MSRP: $11.76
You Save: $4.29 (37%)
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 Chevrolet Suburban | 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3/4 TON, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS EXTENDED CAB 185.5, 3500 CHASSIS REGULAR CAB 137.0, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB, CLASSIC 2500 CREW CAB LONG BOX, CLASSIC 2500 CREW CAB STANDARD BOX, CLASSIC 2500 EXTENDED CAB LONG BOX, CLASSIC 2500 EXTENDED CAB STANDARD BOX, CLASSIC 2500 REGULAR CAB, CLASSIC 3500 CHASSIS EXTENDED CAB 161.5, CLASSIC 3500 CREW CAB, CLASSIC 3500 EXTENDED CAB, CLASSIC 3500 REGULAR CAB, EXT 3/4 TON, XL 3/4 TON | 8 Cyl 8.1L
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Chevrolet Suburban 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:
- 2021-2024 Chevrolet Suburban | 1/2 TON | 6 Cyl 3.0L Diesel
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Chevrolet Suburban Seal, Valve Stem Oil
Part Number: 10183724
$16.70 MSRP: $20.47
You Save: $3.77 (19%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: SEAL, Engine Valve
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1999 Chevrolet Suburban | 3/4 TON | 8 Cyl 7.4L
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Chevrolet Suburban Seal, Exhaust Valve Stem Oil
Part Number: 23502552
Product Specifications
- Other Name: SEAL, Engine Valve; Valve Seal
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1999 Chevrolet Suburban | 1/2 TON, 3/4 TON | 8 Cyl 6.2L Diesel, 8 Cyl 6.5L Diesel
View related parts
Chevrolet Suburban 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 Chevrolet Suburban | 1/2 TON, 3/4 TON | 8 Cyl 5.7L
- 1985-1986 Chevrolet Suburban | 1/2 TON, 3/4 TON
View related parts
Chevrolet Suburban 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 Chevrolet Suburban | 1/2 TON, 3/4 TON | 8 Cyl 5.7L
- 1985-1988 Chevrolet Suburban | 1/2 TON, 3/4 TON
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Chevrolet Suburban Seal, Inlet Valve Stem Oil (Free Of Asbestos)
Part Number: 460527
Product Specifications
- Other Name: SEAL, Engine Valve; Valve Seal
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1991 Chevrolet Suburban | 1/2 TON, 3/4 TON | 8 Cyl 7.4L
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Chevrolet Suburban 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 Chevrolet Suburban | 1/2 TON, 3/4 TON | 8 Cyl 5.7L
View related parts
Chevrolet Suburban 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 Chevrolet Suburban | 1/2 TON, 3/4 TON | 8 Cyl 5.7L
- 1985-1989 Chevrolet Suburban | 1/2 TON, 3/4 TON

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Chevrolet Suburban Valve Stem Oil Seal

Each OEM Chevrolet Suburban Valve Stem Oil Seal we offer is competitively priced and comes with the assurance of the manufacturer's warranty for the part. Furthermore, we guarantee the speedy delivery of your orders right to your doorstep. Our hassle-free return policy is also in place for your peace of mind.

Chevrolet Suburban 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.

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