What are the steps involved in disassembling and reconditioning a cylinder head for home mechanics on GMC Jimmy?

New and re-manufactured cylinder heads are usually easily obtainable from vendors, and most stock them for almost all the engines that are available in the current market; it is therefore easier for a home-brew mechanic to purchase a new head instead of going through the tedious process of dismantling the head, only to discover that it cannot be re-used, re-machining it and then re-assembling it. Disassembly means the removal of the intake and exhaust valves with their parts; if they are installed, nuts/bolts as well as pivot balls for the dismantling of rocker arms from cylinder head. Small plastic bags should also be used in labeling and storing of valve train parts so that during reassembly the parts can be returned to their proper positions. It is advisable to identify them with numbers or marks and then assemble them in a manner that will allow them to be fitted in the correct valve guides. A valve spring compressor is fitted to compress the spring for the first valve so that the keepers, retainer, shield, springs, valve guide seal, spring seat, and the valve can be removed. If a valve binds in the guide, you have to deburr the region around the keeper groove, sometimes. The same should be done for the other valves; all parts for each valve should be placed together in the same compartment. When all the valves are removed and all are safely stored, the head must also be properly cleaned and evaluated; in the case of a total engine teardown for rebuilding for a total overhaul prior to the cleaning and evaluating of, say, the head, it should be continued.

Genuine GMC Jimmy Cylinder Head

Head

Select Vehicle by Model
Select Vehicle by VIN

Select Vehicle by Model

Make

Model

Year

Select Vehicle by VIN

For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

17 Cylinder Heads found

View related parts
GMC Jimmy Cylinder Head Assembly (W/Studs)
Part Number: 12533558
$310.73 MSRP: $491.12
You Save: $180.39 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Head Asm,Cyl (W/Studs)
- Replaces: 12533134
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-1999 GMC Jimmy | 2 DOOR, 4 DOOR | 6 Cyl 4.3L
View related parts
GMC Jimmy Cylinder Head & Stud Kit, 4.3Z
Part Number: 12520274
$685.46 MSRP: $934.39
You Save: $248.93 (27%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Cylinder Head
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1993 GMC Jimmy | 2 DOOR, 4 DOOR | 6 Cyl 4.3L
- 1985-1988 GMC Jimmy | 1/2 TON | 6 Cyl 4.3L
View related parts
GMC Jimmy Engine Cylinder Head
Part Number: 12555630
$449.11 MSRP: $713.03
You Save: $263.92 (38%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Head,Cyl; Cylinder Head
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-2001 GMC Jimmy | 2 DOOR, 4 DOOR | 6 Cyl 4.3L
View related parts
GMC Jimmy Cylinder Head Assembly
Part Number: 12558112
$621.53 MSRP: $803.53
You Save: $182.00 (23%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Head Assembly, Cyl ; Head, Engine Cylinder; Cylinder Head
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-1999 GMC Jimmy | 2 DOOR, 4 DOOR | 6 Cyl 4.3L
View related parts
GMC Jimmy Cylinder Head (W/Studs)
Part Number: 10065219
$136.21 MSRP: $1039.79
You Save: $903.58 (87%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Head,Cyl (W/Studs); Cylinder Head
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1989 GMC Jimmy | 1/2 TON
View related parts
GMC Jimmy Cylinder Head
Part Number: 10065202
$395.07 MSRP: $734.23
You Save: $339.16 (47%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Head,Cyl
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1988 GMC Jimmy | 1/2 TON | 8 Cyl 5.0L, 8 Cyl 5.7L
View related parts
GMC Jimmy Cylinder Head & Stud Kit, 4.3W
Part Number: 12518291
Product Specifications
- Other Name: Cylinder Head
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1993 GMC Jimmy | 2 DOOR, 4 DOOR | 6 Cyl 4.3L
View related parts
GMC Jimmy Cylinder Head Assembly
Part Number: 12562922
Product Specifications
- Other Name: Head Asm,Cyl; Cylinder Head
- Replaces: 10101136
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1990-1991 GMC Jimmy | 1/2 TON
View related parts
GMC Jimmy CYLINDER HEAD KIT COMPLETE (W/BALL & NUT) (REMANUFACTURE)
Part Number: 12498297
Product Specifications
- Other Name: Head Kit,Cyl(Complete) W/Ball & Nut (Remanufacture) ; Head, Engine Cylinder; Cylinder Head
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1994-1995 GMC Jimmy | 2 DOOR, 4 DOOR | 6 Cyl 4.3L
View related parts
GMC Jimmy Cylinder Head
Part Number: 14054884
Product Specifications
- Other Name: Head, Cyl
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1993 GMC Jimmy | 2 DOOR, 4 DOOR
View related parts
GMC Jimmy Cylinder Head & Stud ASSEMBLY
Part Number: 12516852
Product Specifications
- Other Name: Cylinder Head & Stud Asm ; Head, Engine Cylinder; Cylinder Head
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1987-1991 GMC Jimmy | 1/2 TON | 8 Cyl 5.7L
View related parts
GMC Jimmy Cylinder Head
Part Number: 14079336
Product Specifications
- Other Name: Head,Cyl
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1991 GMC Jimmy | 1/2 TON | 8 Cyl 6.2L Diesel
View related parts
GMC Jimmy Cylinder Head Assembly (Remanufacture 454 Domestic)
Part Number: 12352783
Product Specifications
- Other Name: Head Assembly, Cylinder Complete(Remanufacture 454 Domestic); Cylinder Head
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1991 GMC Jimmy | 1/2 TON
View related parts
GMC Jimmy Cylinder Head
Part Number: 23500116
Product Specifications
- Other Name: Head,Cyl
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1991 GMC Jimmy | 1/2 TON | 8 Cyl 6.2L Diesel
View related parts
GMC Jimmy Cylinder Head
Part Number: 23500117
Product Specifications
- Other Name: Head,Cyl
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1991 GMC Jimmy | 1/2 TON | 8 Cyl 6.2L Diesel
View related parts
GMC Jimmy Cylinder Head Assembly (W/Prechamber)
Part Number: 15636794
Product Specifications
- Other Name: Head Assembly, Engine Cylinder 6.2L (W/Prechamber); Cylinder Head
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1991 GMC Jimmy | 1/2 TON | 8 Cyl 6.2L Diesel
View related parts
GMC Jimmy Cylinder Head Assembly (W/Prechamber)
Part Number: 15635742
Product Specifications
- Other Name: Head Assembly, Engine Cylinder 6.2L (W/Prechamber); Cylinder Head
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1990-1991 GMC Jimmy | 1/2 TON | 8 Cyl 6.2L Diesel

GMC Jimmy Cylinder Head

Each OEM GMC Jimmy Cylinder Head 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.

GMC Jimmy Cylinder Head Parts Questions & Experts Answers

Cylinder Head Assembly (W/Studs)
12533558
Q: What are the steps involved in disassembling and reconditioning a cylinder head for home mechanics on GMC Jimmy?
A: New and re-manufactured cylinder heads are usually easily obtainable from vendors, and most stock them for almost all the engines that are available in the current market; it is therefore easier for a home-brew mechanic to purchase a new head instead of going through the tedious process of dismantling the head, only to discover that it cannot be re-used, re-machining it and then re-assembling it. Disassembly means the removal of the intake and Exhaust Valves with their parts; if they are installed, nuts/bolts as well as pivot balls for the dismantling of rocker arms from cylinder head. Small plastic bags should also be used in labeling and storing of valve train parts so that during reassembly the parts can be returned to their proper positions. It is advisable to identify them with numbers or marks and then assemble them in a manner that will allow them to be fitted in the correct valve guides. A valve spring compressor is fitted to compress the spring for the first valve so that the keepers, retainer, shield, springs, valve guide seal, spring seat, and the valve can be removed. If a valve binds in the guide, you have to deburr the region around the keeper groove, sometimes. The same should be done for the other valves; all parts for each valve should be placed together in the same compartment. When all the valves are removed and all are safely stored, the head must also be properly cleaned and evaluated; in the case of a total engine teardown for rebuilding for a total overhaul prior to the cleaning and evaluating of, say, the head, it should be continued.

Related GMC Jimmy Parts

Browse by Year

2001 Cylinder Head 2000 Cylinder Head 1999 Cylinder Head 1998 Cylinder Head 1997 Cylinder Head 1996 Cylinder Head 1995 Cylinder Head 1994 Cylinder Head 1993 Cylinder Head 1992 Cylinder Head 1991 Cylinder Head 1990 Cylinder Head 1989 Cylinder Head 1988 Cylinder Head 1987 Cylinder Head 1986 Cylinder Head 1985 Cylinder Head