How to remove and install a cylinder head in six cylinder engine on Chevrolet Trailblazer?

Before getting to the process of removing the cylinder head the first step is to drain the engine coolant. Next, take off the valve cover and the exhaust manifold gathering after that, the timing chain with the sprockets. After that, it is required to undone the seventeen cylinder head bolts in reverse order with which they were tightened, and then, carefully, because of its weight, lift the cylinder head off of the engine where help is preferable. If the cylinder head is stuck do not attempt to pry it between the block and the head, instead place a casting protrusion or a wooden block on the head and use a mallet to apply moderate pressure. Any dirt or debris must be cleaned off the mating face of the engine block and the cylinder head before replacement of the cylinder head gasket the two alignment dowel pins must however not be misplaced or lost. Ensure you use a precision straight edge and the feeler gages to check of the surface against the required specification. When it is time to install the Cylinder Head, make sure that the number 1 cylinder is at Top Dead Center and use new Cylinder Head Bolts . Install a new head gasket and align the dowel pin holes to the corresponding blocks on the engine block and then get the cylinder head properly seated on the block. Do not attempt to use the old cylinder head bolts, instead, it is required that new cylinder head bolts are installed and hand tightened and then tightened in a sequence to a particular torque setting . The following assembly is done in the reverse order starting with replacing oil filter and oil and the last is the coolant.

Genuine Chevrolet Trailblazer Cylinder Head

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9 Cylinder Heads found

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Chevrolet Trailblazer Head Assembly, Cyl (W/ Valve)
Part Number: 12629058
$668.62 MSRP: $1063.87
You Save: $395.25 (38%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: HEAD, Engine Cylinder; Cylinder Head
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2009 Chevrolet Trailblazer | 4 DOOR, 4 DOOR EXT | 8 Cyl 5.3L, 8 Cyl 6.0L
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Chevrolet Trailblazer Head Assembly, Cyl (W/ Valve)
Part Number: 12671794
$769.40 MSRP: $994.70
You Save: $225.30 (23%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Head Assembly, Cyl (W/ Vlv)
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2009 Chevrolet Trailblazer | 4 DOOR | 8 Cyl 6.0L
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Chevrolet Trailblazer HEAD ASM-CYL (W/ VLV)
Part Number: 25204903
$516.73 MSRP: $820.40
You Save: $303.67 (38%)
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Product Specifications
- Replaces: 55514769
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2025 Chevrolet Trailblazer | 4 DOOR EXT, LEVEL II 4 DOOR EXTENDED, LEVEL III 4DOOR EXTENDED | 3 Cyl 1.2L
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Chevrolet Trailblazer Head Assembly, Cyl (W/ Vlv)
Part Number: 12694943
$531.47 MSRP: $841.30
You Save: $309.83 (37%)
Ships in 1-3 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:
- 2021-2024 Chevrolet Trailblazer | 4 DOOR EXT, LEVEL II 4 DOOR EXTENDED, LEVEL III 4DOOR EXTENDED, LEVEL IV 4 DOOR EXTENDED, LEVEL V 4 DOOR EXTENDED | 3 Cyl 1.3L
View related parts
Chevrolet Trailblazer Head Assembly, Cyl (W/ Vlv)
Part Number: 55514769
$516.73 MSRP: $820.40
You Save: $303.67 (38%)
ADD TO CART
Product Specifications
- Other Name: Cylinder Head
- Replaced by: 25204903
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2024 Chevrolet Trailblazer | 4 DOOR EXT, LEVEL II 4 DOOR EXTENDED, LEVEL III 4DOOR EXTENDED | 3 Cyl 1.2L
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Chevrolet Trailblazer Cylinder Head
Part Number: 12578925
$538.50 MSRP: $854.96
You Save: $316.46 (38%)
Product Specifications
- Other Name: Head,Cyl
- Replaces: 12563680, 12559864
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2004 Chevrolet Trailblazer | 4 DOOR, 4 DOOR EXT | 8 Cyl 5.3L
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Chevrolet Trailblazer Remanufacture Cylinder Head
Part Number: 19257187
Product Specifications
- Other Name: 4.2L Ll8 2006, 2007 Remanufacture Cylinder Head
- Replaces: 19206639
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2007 Chevrolet Trailblazer | 4 DOOR, 4 DOOR EXT | 6 Cyl 4.2L
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Chevrolet Trailblazer Engine Cylinder Head (Remanufacture)
Part Number: 19207470
Product Specifications
- Other Name: Head,Cyl(Remanufacture); Cylinder Head
- Replaces: 88984242, 88894178
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2005 Chevrolet Trailblazer | 4 DOOR, 4 DOOR EXT | 6 Cyl 4.2L
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Chevrolet Trailblazer Remanufacture Cylinder Head
Part Number: 19257188
Product Specifications
- Other Name: 4.2L Ll8 2008, 2009 Remanufacture Cylinder Head
- Replaces: 19206640
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2009 Chevrolet Trailblazer | 4 DOOR | 6 Cyl 4.2L

Chevrolet Trailblazer Cylinder Head

Each OEM Chevrolet Trailblazer 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.

Chevrolet Trailblazer Cylinder Head Parts Questions & Experts Answers

Head Assembly, Cyl (W/ Valve)
12629058
Q: How to remove and install a cylinder head in six cylinder engine on Chevrolet Trailblazer?
A:
Before getting to the process of removing the cylinder head the first step is to drain the engine coolant. Next, take off the valve cover and the Exhaust Manifold gathering after that, the Timing Chain with the sprockets. After that, it is required to undone the seventeen cylinder head bolts in reverse order with which they were tightened, and then, carefully, because of its weight, lift the cylinder head off of the engine where help is preferable. If the cylinder head is stuck do not attempt to pry it between the block and the head, instead place a casting protrusion or a wooden block on the head and use a mallet to apply moderate pressure. Any dirt or debris must be cleaned off the mating face of the engine block and the cylinder head before replacement of the cylinder head gasket the two alignment dowel pins must however not be misplaced or lost. Ensure you use a precision straight edge and the feeler gages to check of the surface against the required specification. When it is time to install the Cylinder Head, make sure that the number 1 cylinder is at Top Dead Center and use new Cylinder Head Bolts . Install a new head gasket and align the dowel pin holes to the corresponding blocks on the engine block and then get the cylinder head properly seated on the block. Do not attempt to use the old cylinder head bolts, instead, it is required that new cylinder head bolts are installed and hand tightened and then tightened in a sequence to a particular torque setting . The following assembly is done in the reverse order starting with replacing oil filter and oil and the last is the coolant.

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