What steps should be taken for thorough cleaning and inspection of the cylinder head and valvetrain components during an engine overhaul on GMC Jimmy?

When you remove the cylinder head for cleaning, it is advisable to clean also the other valvetrain related parts and then inspect them so that you determine how much work has to be done on the valves during the overall engine rebuilding process. To prepare the surfaces, first remove all matted deposits of gasket and sealing compound from the head gasket, intake manifold and exhaust manifold contacting surfaces with a dull scraper for the gaskets and gasket removal solvent; do not attempt to use power tools or old-fashioned metal scraper that can scratch the surface of the machined parts. Scrape off the deposits formed round the coolant passages and scrub the oil holes by using stiff wire brush. Small threads allow for a suitable size tap to be fitted in each threaded hole to remove rust and the thread sealant; use compressed air to blow any debris if available. Use die to clean all the threads of the exhaust and intake manifold studs and use wire brush on all the rocker-arm stud threads. Wash the cylinder head with the solvent and make sure that you dry the parts properly, use a compressed air to help you hasten the process. The concept of decarbonising chemicals may be relevant but has to be approached cautiously. With solvent, clean rocker arms, pivot ball and push rods. Wipe off dry then proceed to clean each and every valve spring, keepers, retainers, rotators, shields and spring seat one valve at a time so as not to mix them. Remove thick and thick rust from the control valves and use a motor wire brush for the heads and stems of the valves, but should not mix them. Check the head and the block for cracks, leaks of the coolant, and other mechanical problems; if necessary, change the head. To determine if this surface is warped beyond limits, place a straight edge on the face of the gasket mating surface and use feeler gauges to measure the warp, and if yes resurface. Intensively check valve seats for pitting, crack out, burnt area so it may require professional service. It is essential to check the inside diameter of the valve guides then measure them to compute valve stem-to-guide clearances with a view of defining where reconditioning or replacement is necessary. A study of the rocker arm faces will reveal excessive wear, the ends of the push rods for scuffing while rolling them over a flat surface will reveal bending. For each valve face look for the cracks, pits, burned spots, the condition of the valve stem and the neck must be checked for the cracks and excessive wear. Check the width of the valve margin and compare it to the recommended width and supply broader ones if the valve margins are narrow. Take measurements on the valve stem to establish the valve stem to guide bore to ascertain if the steps of reconditioning the valve will be necessary or not. To do this look for wear and pitting on the lower ends of the valve spring, examine their free length prescried by the manufacture's manual and lastly make sure they are at right angles to the cylinder head. Check spring retainers and keepers for signs of wear or cracks and replace any worn out part. If an inspection reveals that they are in rather poor condition and show signs of excessive wear, then reinsert the valves in the cylinder head and operate them in accord with recommendations on valve maintenance. Unless certain of greatly worn valve and guide contact areas or valve faces and their seats are found to be worn, the valvetrain components should not require major service but the valve could be had recooked up, for new-like specifications, if engine has high mileage and is being build up to new standards at automotive machine shops.

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113 Cylinder Heads found

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GMC Head Assembly, Cyl (W/ Valve)
Part Number: 12629058
$671.65 MSRP: $1063.87
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Product Specifications
- Other Name: HEAD, Engine Cylinder; Cylinder Head
Fits the following GMC Models:
- Canyon | 2009-2012 | PICKUP, PICKUP CREW CAB, PICKUP EXTENDED CAB, PICKUP EXTENDED LENGTH | 8 Cyl 5.3L
- Envoy | 2005-2009 | 4 DOOR, 4 Door XL, 4 DOOR XUV | 8 Cyl 5.3L
- Savana | 2008-2017 | 1 TON CARGO EXPRESS, 1 TON CARGO SAVANA, 1 TON COMMERCIAL/RV CUTAWAY, 1 TON PASSENGER, 1/2 TON CARGO EXPRESS, 1/2 TON CARGO SAVANA, 1/2 TON PASSENGER EXPRESS, 1/2 TON PASSENGER SAVANA, 3/4 TON CARGO EXPRESS, 3/4 TON CARGO SAVANA, 3/4 TON PASSENGER EXPRESS, 3/4 TON PASSENGER SAVANA | 8 Cyl 4.8L, 8 Cyl 4.8L Flex, 8 Cyl 5.3L
- Sierra | 2005-2013 | 1500 CREW CAB LONG BOX, 1500 CREW CAB STANDARD BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB SHORT BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, CLASSIC 1500 CREW CAB LONG BOX, CLASSIC 1500 CREW CAB STANDARD BOX, CLASSIC 1500 EXTENDED CAB LONG BOX, CLASSIC 1500 EXTENDED CAB SHORT BOX, CLASSIC 1500 EXTENDED CAB STANDARD BOX, CLASSIC 1500 REGULAR CAB LONG BOX, CLASSIC 1500 REGULAR CAB STANDARD BOX, CREW CAB 1/2 TON, EXTENDED CAB 5'8" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON, EXTENDED CAB 8' BOX 1/2 TON, REGULAR CAB 6'6" BOX 1/2 TON, REGULAR CAB 8' BOX 1/2 TON | 8 Cyl 4.8L, 8 Cyl 4.8L Flex, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.0L Flex
- Yukon | 2007-2014, 2005 | 1/2 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
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GMC Cylinder Head Assembly (W/ Valve)
Part Number: 19206642
$1119.44 MSRP: $1774.79
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Product Specifications
- Other Name: Head Asm,Cyl (W/ Valve) ; Head, Engine Cylinder
Fits the following GMC Models:
- Canyon | 2007 | PICKUP, PICKUP CREW CAB, PICKUP EXTENDED CAB, PICKUP EXTENDED LENGTH | 5 Cyl 3.7L
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GMC Cylinder Head Assembly
Part Number: 12629342
$429.64 MSRP: $734.67
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Product Specifications
- Other Name: Head Assembly, Cyl; Cylinder Head
- Replaced by: 12677840
Fits the following GMC Models:
- Savana | 2018-2021 | 1 TON CARGO SAVANA, 1 TON COMMERCIAL/RV CUTAWAY, 1 TON PASSENGER, 3/4 TON CARGO SAVANA, 3/4 TON PASSENGER SAVANA | 6 Cyl 4.3L
- Sierra | 2014-2021 | 1500 CREW CAB, 1500 CREW CAB STANDARD BOX, 1500 DOUBLE CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, CREW CAB 1/2 TON, CREW CAB 5'8" 1/2 TON, CREW CAB 5'8" BOX 1/2 TON, CREW CAB 6'6" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON, EXTENDED CAB 8' BOX 1/2 TON, REGULAR CAB 6'6" BOX 1/2 TON, REGULAR CAB 8' BOX 1/2 TON | 6 Cyl 4.3L
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GMC Cylinder Head (W/Studs)
Part Number: 12528913
$346.61 MSRP: $692.98
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Product Specifications
- Other Name: Head,Cyl (W/Studs); Cylinder Head
Fits the following GMC Models:
- C1500 | 1996-1999 | C1500 EXTENDED CAB LONG BOX, C1500 EXTENDED CAB STANDARD BOX, C1500 REGULAR CAB LONG BOX, C1500 REGULAR CAB STANDARD BOX | 8 Cyl 5.7L
- C2500 | 1996-2000 | C2500 CREW CAB, C2500 EXTENDED CAB LONG BOX, C2500 EXTENDED CAB STANDARD BOX, C2500 REGULAR CAB | 8 Cyl 5.7L
- C3500 | 1996-2000 | C3500 CAB CHASSIS 135.5, C3500 CAB CHASSIS 159.9, C3500 CAB CHASSIS 183.5, C3500 CREW CAB LONG WHEELBASE, C3500 CREW CAB SHORT WHEELBASE, C3500 EXTENDED CAB, C3500 REGULAR CAB, K2500 EXTENDED CAB STANDARD BOX | 8 Cyl 5.7L
- K1500 | 1996-1999 | K1500 EXTENDED CAB LONG BOX, K1500 EXTENDED CAB STANDARD BOX, K1500 REGULAR CAB LONG BOX, K1500 REGULAR CAB STANDARD BOX | 8 Cyl 5.7L
- K2500 | 1996-2000 | K2500 CREW CAB, K2500 EXTENDED CAB LONG BOX, K2500 EXTENDED CAB STANDARD BOX, K2500 REGULAR CAB | 8 Cyl 5.7L
- K3500 | 1996-2000 | K3500 CAB CHASSIS 135.5, K3500 CAB CHASSIS 159.9, K3500 CREW CAB LONG WHEELBASE, K3500 CREW CAB SHORT WHEELBASE, K3500 EXTENDED CAB, K3500 REGULAR CAB | 8 Cyl 5.7L
- Savana | 1996-2002 | 1 TON CARGO EXPRESS, 1 TON CARGO SAVANA, 1 TON COMMERCIAL/RECREATIONAL VEHICLE EXPRESS, 1 TON COMMERCIAL/RECREATIONAL VEHICLE SAVANA, 1 TON PASSENGER, 1/2 TON CARGO, 1/2 TON CARGO EXPRESS, 1/2 TON CARGO SAVANA, 1/2 TON PASSENGER EXPRESS, 1/2 TON PASSENGER SAVANA, 3/4 TON CARGO EXPRESS, 3/4 TON CARGO SAVANA, 3/4 TON PASSENGER EXPRESS, 3/4 TON PASSENGER SAVANA | 8 Cyl 5.0L, 8 Cyl 5.7L
- Sierra | 2005-2007 | 3500 CHASSIS REGULAR CAB 137.0, CLASSIC 3500 CHASSIS REGULAR CAB 137.0
- Suburban | 1996-1999 | 1/2 TON, 3/4 TON | 8 Cyl 5.7L
- Yukon | 1996-2000 | CLASSIC 2 DOOR 1/2 TON, CLASSIC 4 DOOR 1/2 TON | 8 Cyl 5.7L
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GMC Cylinder Head & Stud Kit, 4.3Z
Part Number: 12520274
$685.46 MSRP: $934.39
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Product Specifications
- Other Name: Cylinder Head
Fits the following GMC Models:
- C1500 | 1992, 1985-1986 | C1500 EXTENDED CAB LONG BOX, C1500 EXTENDED CAB STANDARD BOX, C1500 REGULAR CAB LONG BOX, C1500 REGULAR CAB STANDARD BOX, REGULAR CAB LONG BOX, REGULAR CAB STANDARD BOX | 6 Cyl 4.3L
- C2500 | 1992, 1985-1986 | C2500 EXTENDED CAB LONG BOX, C2500 EXTENDED CAB STANDARD BOX, C2500 REGULAR CAB, CREW CAB, REGULAR CAB | 6 Cyl 4.3L
- C3500 | 1985-1986 | CAB CHASSIS 135.5, CAB CHASSIS 159.9, CREW CAB, REGULAR CAB
- Jimmy | 1992-1993, 1985-1988 | 1/2 TON, 2 DOOR, 4 DOOR | 6 Cyl 4.3L
- K1500 | 1992, 1985-1986 | K1500 EXTENDED CAB LONG BOX, K1500 EXTENDED CAB STANDARD BOX, K1500 REGULAR CAB LONG BOX, K1500 REGULAR CAB STANDARD BOX, REGULAR CAB LONG BOX, REGULAR CAB STANDARD BOX | 6 Cyl 4.3L
- K2500 | 1992, 1985-1986 | K2500 EXTENDED CAB LONG BOX, K2500 EXTENDED CAB STANDARD BOX, K2500 REGULAR CAB, REGULAR CAB | 6 Cyl 4.3L
- K3500 | 1985-1986 | CAB CHASSIS 135.5, CAB CHASSIS 159.9, CREW CAB, REGULAR CAB
- R1500 | 1987 | 1/2 TON | 6 Cyl 4.3L
- R2500 | 1987-1988 | 3/4 TON, 3/4 TON CREW CAB | 6 Cyl 4.3L
- R3500 | 1987-1988 | 1 TON, 1 TON CREW CAB, CAB CHASSIS
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GMC Cylinder Head Assembly
Part Number: 12581476
$761.70 MSRP: $984.75
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Product Specifications
- Other Name: Head Assembly, Cyl ; Head, Engine Cylinder; Cylinder Head
Fits the following GMC Models:
- Savana | 2001-2002 | 1 TON CARGO SAVANA, 1 TON COMMERCIAL/RECREATIONAL VEHICLE SAVANA, 1 TON PASSENGER | 8 Cyl 8.1L
- Sierra | 2001-2007 | 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 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 CHASSIS REGULAR CAB 137.0, CLASSIC 3500 CHASSIS REGULAR CAB 161.5, CLASSIC 3500 CREW CAB, CLASSIC 3500 EXTENDED CAB, CLASSIC 3500 REGULAR CAB | 8 Cyl 8.1L
- Yukon | 2001-2006 | 3/4 TON, XL 3/4 TON | 8 Cyl 8.1L
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GMC Head Assembly, Cyl (W/ Vlv)
Part Number: 12711770
$862.54 MSRP: $1487.59
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Product Specifications
- Other Name: Cylinder Head
- Replaces: 12629062, 12629064, 12582713, 12615355
Fits the following GMC Models:
- Savana | 2008-2020 | 1 TON CARGO EXPRESS, 1 TON CARGO SAVANA, 1 TON COMMERCIAL/RV CUTAWAY, 1 TON PASSENGER, 3/4 TON CARGO EXPRESS, 3/4 TON CARGO SAVANA, 3/4 TON PASSENGER EXPRESS, 3/4 TON PASSENGER SAVANA | 8 Cyl 6.0L, 8 Cyl 6.0L Flex
- Sierra | 2007-2019 | 1 TON CREW CAB, 2500 CREW CAB STANDARD BOX, 2500 REGULAR CAB, 2500 REGULAR CAB STANDARD BOX, 3500 CREW CAB LONG BOX, 3500 CREW CAB ONLY, 3500 CREW CAB STANDARD BOX, 3500 DOUBLE CAB LONG BOX, 3500 REGULAR CAB, CREW CAB 1 TON, CREW CAB 1 TON 119.0, CREW CAB 1 TON 137.0, CREW CAB 1/2 TON, CREW CAB 2500 LONG BOX, CREW CAB 6'6" BOX 3/4 TON, CREW CAB 8' BOX 3/4 TON, DOUBLE CAB 2500 LONG BOX, DOUBLE CAB 2500 STANDARD BOX, EXTENDED CAB 1 TON, EXTENDED CAB 5'8" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 3/4 TON, EXTENDED CAB 8' BOX 1/2 TON, EXTENDED CAB 8' BOX 3/4 TON, EXTENDED CAB CHASSIS 1 TON 161.5, EXTENDED CREW CAB 1 TON 161.5, REGULAR CAB 1 TON, REGULAR CAB 3/4 TON, REGULAR CAB 6'6" BOX 1/2 TON, REGULAR CAB 8' BOX 1/2 TON, REGULAR CAB CHASSIS 1 TON 137.0, REGULAR CAB CHASSIS 1 TON 161.5 | 8 Cyl 6.0L, 8 Cyl 6.0L Flex, 8 Cyl 6.2L, 8 Cyl 6.2L Flex
- Yukon | 2007-2014 | 1/2 TON, 3/4 TON, XL 3/4 TON, YUKON XL/DENALI XL/ESCALADE ESV, YUKON/DENALI/ESCALADE | 8 Cyl 6.0L, 8 Cyl 6.0L Flex, 8 Cyl 6.2L, 8 Cyl 6.2L Flex
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GMC Head Assembly, Cyl (W/ Vlv)
Part Number: 12677840
$429.64 MSRP: $734.67
You Save: $305.03 (42%)
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Product Specifications
- Other Name: Cylinder Head
- Replaces: 12629341, 12699615, 12629342
Fits the following GMC Models:
- Savana | 2018-2023 | 1 TON CARGO SAVANA, 1 TON COMMERCIAL/RV CUTAWAY, 1 TON PASSENGER, 3/4 TON CARGO SAVANA, 3/4 TON PASSENGER SAVANA | 6 Cyl 4.3L
- Sierra | 2014-2021 | 1500 CREW CAB, 1500 CREW CAB STANDARD BOX, 1500 DOUBLE CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, CREW CAB 1/2 TON, CREW CAB 5'8" 1/2 TON, CREW CAB 5'8" BOX 1/2 TON, CREW CAB 6'6" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON, EXTENDED CAB 8' BOX 1/2 TON, REGULAR CAB 6'6" BOX 1/2 TON, REGULAR CAB 8' BOX 1/2 TON | 6 Cyl 4.3L
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GMC Head Assembly,Cyl (Remanufacture) 2012, 2017 Llt Rh
Part Number: 19329674
$1158.69 MSRP: $1915.11
You Save: $756.42 (40%)
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Product Specifications
- Other Name: Head Assembly,Cyl (Reman) 2012, 2017 Llt Rh
Fits the following GMC Models:
- Acadia | 2012-2017 | SPORT UTILITY VEHICLE 2WD, SPORT UTILITY VEHICLE 4WD | 6 Cyl 3.6L
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GMC Head Assembly, Cyl (W/ Vlv)
Part Number: 12699617
$291.39 MSRP: $592.71
You Save: $301.32 (51%)
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Product Specifications
- Other Name: Cylinder Head
- Replaces: 12678972, 12620544, 12678633, 12620545
Fits the following GMC Models:
- Sierra | 2014-2021 | 1500 CREW CAB, 1500 CREW CAB STANDARD BOX, 1500 DOUBLE CAB STANDARD BOX, CREW CAB 1/2 TON, CREW CAB 5'8" BOX 1/2 TON, CREW CAB 6'6" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON | 8 Cyl 6.2L
- Yukon | 2015-2021 | 1/2 TON, 1500 4 DOOR SUV, 1500 4 DOOR UTILITY, 4 DOOR, 4 DOOR SUV, YUKON/DENALI/ESCALADE | 8 Cyl 6.2L
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GMC Cylinder Head Assembly (W/ Valve)
Part Number: 12684222
$751.89 MSRP: $1193.49
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Product Specifications
- Other Name: Head Assembly, Cyl (W/ Vlv); Cylinder Head
- Replaces: 12668131
Fits the following GMC Models:
- Acadia | 2017-2023 | DENALI SUV, SLE SUV, SLE2 & ALL TERRAIN SUV, SLE2 SUV, SLT & ALL TERRAIN SUV, SLT SUV, SLT2 SUV | 6 Cyl 3.6L
- Canyon | 2017-2022 | CREW CAB - 5'2" BOX, CREW CAB - 6'2" BOX, CREW CAB SLE - 6'2" BOX, CREW CAB SLT - 6'2" BOX, EXT CAB - 6'2" BOX, EXTENDED CAB - 6'2" BOX, SLE CREW CAB - 5'2" BOX, SLE EXTENDED CAB - 6'2" BOX, SLT CREW CAB - 5'2" BOX, SLT EXTENDED CAB - 6'2" BOX | 6 Cyl 3.6L
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GMC Head Assembly, Cyl (W/ Vlv)
Part Number: 12686233
$302.73 MSRP: $478.46
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Product Specifications
- Other Name: Cylinder Head
- Replaces: 12679109, 12679457, 12677521, 12668132, 12673745
Fits the following GMC Models:
- Acadia | 2017-2023 | DENALI SUV, SLE SUV, SLE2 & ALL TERRAIN SUV, SLE2 SUV, SLT & ALL TERRAIN SUV, SLT SUV, SLT2 SUV | 6 Cyl 3.6L
- Canyon | 2017-2022 | CREW CAB - 5'2" BOX, CREW CAB - 6'2" BOX, CREW CAB SLE - 6'2" BOX, CREW CAB SLT - 6'2" BOX, EXT CAB - 6'2" BOX, EXTENDED CAB - 6'2" BOX, SLE CREW CAB - 5'2" BOX, SLE EXTENDED CAB - 6'2" BOX, SLT CREW CAB - 5'2" BOX, SLT EXTENDED CAB - 6'2" BOX | 6 Cyl 3.6L
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GMC Head Assembly, Cyl (W/ Vlv)
Part Number: 12698290
$291.63 MSRP: $460.92
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Product Specifications
- Other Name: Cylinder Head
Fits the following GMC Models:
- Sierra | 2021-2024 | CREW CAB 5'8" BOX 1/2 TON, Crew Cab 6'6" Box 1/2 Ton, CREW CAB 6'6" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON | 8 Cyl 6.2L
- Yukon | 2021-2024 | 1/2 TON, YUKON XL/DENALI XL/ESCALADE ESV, YUKON/DENALI/ESCALADE | 8 Cyl 6.2L
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GMC Cylinder Head Assembly (W/ Valve)
Part Number: 12679101
$748.53 MSRP: $1185.92
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Product Specifications
- Other Name: Head Assembly, Cyl (W/ Valve); Cylinder Head
- Replaces: 12635547
Fits the following GMC Models:
- Terrain | 2012 | SLE2 SUV, SLT SUV | 6 Cyl 3.0L
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GMC Head Assembly, Cyl (W/ Vlv)
Part Number: 12699616
$629.79 MSRP: $999.91
You Save: $370.12 (38%)
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Product Specifications
- Other Name: Cylinder Head
- Replaced by: 12724880
- Replaces: 12677841, 12620209
Fits the following GMC Models:
- Sierra | 2014-2022 | 1500 CREW CAB, 1500 CREW CAB STANDARD BOX, 1500 DOUBLE CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, CREW CAB 1/2 TON, CREW CAB 5'8" 1/2 TON, CREW CAB 5'8" BOX 1/2 TON, CREW CAB 6'6" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON, EXTENDED CAB 8' BOX 1/2 TON, REGULAR CAB 6'6" BOX 1/2 TON, REGULAR CAB 8' BOX 1/2 TON | 8 Cyl 5.3L, 8 Cyl5.3L
- Yukon | 2015-2021 | 1/2 TON, 1500 4 DOOR SUV, 1500 4 DOOR UTILITY, 4 DOOR, YUKON/DENALI/ESCALADE | 8 Cyl 5.3L
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GMC Cylinder Head Assembly (Machining)
Part Number: 12608280
$821.90 MSRP: $1310.83
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Product Specifications
- Other Name: Head Assembly, Cyl (Machining); Cylinder Head
- Replaces: 12634128
Fits the following GMC Models:
- Terrain | 2010-2017 | SLE1 SUV, SLE2 SUV, SLT SUV | 4 Cyl 2.4L
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GMC Cylinder Head Assembly (W/ Valve)
Part Number: 55504792
$488.79 MSRP: $776.03
You Save: $287.24 (38%)
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Product Specifications
- Other Name: Head Assembly, Cyl (W/ Vlv); Cylinder Head
- Replaced by: 12729488
Fits the following GMC Models:
- Acadia | 2020-2023 | DENALI SUV, SLE SUV, SLT SUV | 4 Cyl 2.0L
- Terrain | 2022 | 4 DOOR SLE2 , 4 DOOR SLT1 , 4 DOOR SLT2 | 4 Cyl 2.0L
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GMC Cylinder Head Assembly
Part Number: 12533542
$1437.30 MSRP: $2281.97
You Save: $844.67 (38%)
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Product Specifications
- Other Name: Head Asm,Cyl ; Head, Engine Cylinder; Cylinder Head
Fits the following GMC Models:
- Savana | 1997-2002 | 1 TON CARGO EXPRESS, 1 TON CARGO SAVANA, 1 TON COMMERCIAL/RECREATIONAL VEHICLE EXPRESS, 1 TON COMMERCIAL/RECREATIONAL VEHICLE SAVANA, 1 TON PASSENGER, 3/4 TON CARGO EXPRESS, 3/4 TON CARGO SAVANA, 3/4 TON PASSENGER EXPRESS, 3/4 TON PASSENGER SAVANA | 8 Cyl 6.5L Diesel
- Suburban | 1998-1999 | 1/2 TON, 3/4 TON | 8 Cyl 6.5L Diesel
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GMC Head Assembly, Cyl (W/ Vlv)
Part Number: 12691728
$714.79 MSRP: $862.50
You Save: $147.71 (18%)
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Product Specifications
- Replaced by: 19436449
- Replaces: 12558060, 12529093
Fits the following GMC Models:
- C1500 | 1996-1999 | C1500 EXTENDED CAB LONG BOX, C1500 EXTENDED CAB STANDARD BOX, C1500 REGULAR CAB LONG BOX, C1500 REGULAR CAB STANDARD BOX | 8 Cyl 5.7L
- C2500 | 1996-2000 | C2500 CREW CAB, C2500 EXTENDED CAB LONG BOX, C2500 EXTENDED CAB STANDARD BOX, C2500 REGULAR CAB | 8 Cyl 5.7L
- C3500 | 2000 | K2500 EXTENDED CAB STANDARD BOX | 8 Cyl 5.7L
- K1500 | 1996-1999 | K1500 EXTENDED CAB LONG BOX, K1500 EXTENDED CAB STANDARD BOX, K1500 REGULAR CAB LONG BOX, K1500 REGULAR CAB STANDARD BOX | 8 Cyl 5.7L
- K2500 | 1996-2000 | K2500 CREW CAB, K2500 EXTENDED CAB LONG BOX, K2500 EXTENDED CAB STANDARD BOX, K2500 REGULAR CAB | 8 Cyl 5.7L
- Savana | 1996-2001 | 1/2 TON CARGO, 1/2 TON CARGO EXPRESS, 1/2 TON CARGO SAVANA, 1/2 TON PASSENGER EXPRESS, 1/2 TON PASSENGER SAVANA, 3/4 TON CARGO EXPRESS, 3/4 TON CARGO SAVANA, 3/4 TON PASSENGER EXPRESS, 3/4 TON PASSENGER SAVANA | 8 Cyl 5.7L
- Suburban | 1996-1999 | 1/2 TON, 3/4 TON | 8 Cyl 5.7L
- Yukon | 1996-2000 | CLASSIC 2 DOOR 1/2 TON, CLASSIC 4 DOOR 1/2 TON | 8 Cyl 5.7L
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GMC Engine Cylinder Head
Part Number: 12562319
$473.06 MSRP: $751.05
You Save: $277.99 (38%)
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Product Specifications
- Other Name: Head,Cyl; Cylinder Head
Fits the following GMC Models:
- Savana | 2003-2007 | 1 TON CARGO SAVANA, 1 TON COMMERCIAL/RV CUTAWAY, 1 TON PASSENGER, 3/4 TON CARGO SAVANA, 3/4 TON PASSENGER SAVANA | 8 Cyl 6.0L
- Sierra | 2002-2007 | 1500 CREW CAB LONG BOX, 1500 CREW CAB STANDARD BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB SHORT 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, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS REGULAR CAB 137.0, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB, CLASSIC 1500 CREW CAB LONG BOX, CLASSIC 1500 CREW CAB STANDARD BOX, CLASSIC 1500 EXTENDED CAB LONG BOX, CLASSIC 1500 EXTENDED CAB SHORT 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 CHASSIS REGULAR CAB 137.0, CLASSIC 3500 CHASSIS REGULAR CAB 161.5, CLASSIC 3500 CREW CAB, CLASSIC 3500 EXTENDED CAB, CLASSIC 3500 REGULAR CAB | 8 Cyl 6.0L
- Yukon | 2002-2006 | 1/2 TON, 3/4 TON, XL 1/2 TON, XL 3/4 TON, YUKON/DENALI/ESCALADE | 8 Cyl 6.0L
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GMC Cylinder Head

You're in the right place for budget-friendly OEM GMC Cylinder Heads. Our extensive catalog features genuine GMC Cylinder Heads, each backed by a manufacturer's warranty and guaranteeing superior quality, dependability, and longevity. Discover how shopping with us can save you both time and money when investing in our auto parts.

GMC Cylinder Head Parts Questions & Experts Answers

Cylinder Head Assembly (W/Studs)
12533558
Q: What steps should be taken for thorough cleaning and inspection of the cylinder head and valvetrain components during an engine overhaul on GMC Jimmy?
A: When you remove the cylinder head for cleaning, it is advisable to clean also the other valvetrain related parts and then inspect them so that you determine how much work has to be done on the valves during the overall engine rebuilding process. To prepare the surfaces, first remove all matted deposits of gasket and sealing compound from the head gasket, intake manifold and exhaust manifold contacting surfaces with a dull scraper for the gaskets and gasket removal solvent; do not attempt to use power tools or old-fashioned metal scraper that can scratch the surface of the machined parts. Scrape off the deposits formed round the coolant passages and scrub the oil holes by using stiff wire brush. Small threads allow for a suitable size tap to be fitted in each threaded hole to remove rust and the thread sealant; use compressed air to blow any debris if available. Use die to clean all the threads of the exhaust and intake manifold studs and use wire brush on all the rocker-arm stud threads. Wash the cylinder head with the solvent and make sure that you dry the parts properly, use a compressed air to help you hasten the process. The concept of decarbonising chemicals may be relevant but has to be approached cautiously. With solvent, clean rocker arms, pivot ball and push rods. Wipe off dry then proceed to clean each and every valve spring, keepers, retainers, rotators, shields and spring seat one valve at a time so as not to mix them. Remove thick and thick rust from the control valves and use a motor wire brush for the heads and stems of the valves, but should not mix them. Check the head and the block for cracks, leaks of the coolant, and other mechanical problems; if necessary, change the head. To determine if this surface is warped beyond limits, place a straight edge on the face of the gasket mating surface and use feeler gauges to measure the warp, and if yes resurface. Intensively check valve seats for pitting, crack out, burnt area so it may require professional service. It is essential to check the inside diameter of the valve guides then measure them to compute valve stem-to-guide clearances with a view of defining where reconditioning or replacement is necessary. A study of the rocker arm faces will reveal excessive wear, the ends of the push rods for scuffing while rolling them over a flat surface will reveal bending. For each valve face look for the cracks, pits, burned spots, the condition of the valve stem and the neck must be checked for the cracks and excessive wear. Check the width of the valve margin and compare it to the recommended width and supply broader ones if the valve margins are narrow. Take measurements on the valve stem to establish the valve stem to guide bore to ascertain if the steps of reconditioning the valve will be necessary or not. To do this look for wear and pitting on the lower ends of the valve spring, examine their free length prescried by the manufacture's manual and lastly make sure they are at right angles to the cylinder head. Check spring retainers and keepers for signs of wear or cracks and replace any worn out part. If an inspection reveals that they are in rather poor condition and show signs of excessive wear, then reinsert the valves in the cylinder head and operate them in accord with recommendations on valve maintenance. Unless certain of greatly worn valve and guide contact areas or valve faces and their seats are found to be worn, the valvetrain components should not require major service but the valve could be had recooked up, for new-like specifications, if engine has high mileage and is being build up to new standards at automotive machine shops.