How to remove and reinstall Pushrod and Rocker Arm in V8 engine on Chevrolet Colorado?

To remove the valve covers from the cylinder heads, first loosen the rocker arm pivot bolts one at a time and take out the rocker arms and bolts, followed by the pivot support pedestal, ensuring to keep track of the component positions for reinstallation. Store each set of components separately in marked containers to maintain their original locations, including the rocker arms and pivot support. Next, remove the pushrods and store them in order to avoid mixing them up during installation. Inspect each rocker arm for wear, cracks, and damage, particularly at the contact points with the pushrods and valve stems, and check the pivot bearings for binding and roughness; if worn or damaged, the entire rocker arm will need replacement. Ensure the hole at the pushrod end of each rocker arm is clear, and inspect the pushrods for cracks and excessive wear, checking that the oil hole is not clogged and rolling each pushrod across a piece of plate glass to detect any bends. For installation, lubricate the lower end of each pushrod with clean engine oil or assembly lube and install them in their original locations, ensuring each pushrod seats completely in the lifter socket. Apply engine assembly lube to the ends of the valve stems and upper ends of the pushrods to prevent damage during initial start-up, and also apply clean engine oil to the pivot shaft and bearing of each rocker arm before loosely installing the rocker arms in their original locations without tightening the bolts. Rotate the crankshaft until the number one piston is at TDC on the compression stroke, ensuring both pushrods for the number one cylinder are in the lowered position, then tighten the intake valve rocker arms for cylinders 1, 3, 4, and 5, and the exhaust rocker arms for cylinders 1, 2, 7, and 8, to the specified torque. Rotate the crankshaft 360 degrees and tighten the intake valve rocker arms for cylinders 2, 6, 7, and 8, and the exhaust rocker arms for cylinders 3, 4, 5, and 6, to the specified torque. Finally, install the valve covers, start the engine, and listen for unusual valve train noises while checking for oil leaks at the valve cover gaskets.

Genuine Chevrolet Colorado Rocker Arm

Engine Rocker Arm

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Chevrolet Colorado Arm Assembly, Exhaust Valve Rocker
Part Number: 12681275
$14.09 MSRP: $23.32
You Save: $9.23 (40%)
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Product Specifications
- Other Name: Arm Assembly, Exh Vlv Rkr; Rocker Arm
- Replaces: 10214664, 12669993
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009-2012 Chevrolet Colorado | CREW CAB, EXTENDED CAB, EXTENDED LENGTH, PICKUP | 8 Cyl 5.3L
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Chevrolet Colorado Arm,Valve Rocker
Part Number: 24100294
$4.97 MSRP: $8.23
You Save: $3.26 (40%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: ARM, Engine Valve Rocker; Rocker Arm
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2015-2016 Chevrolet Colorado | CREW CAB - 5'2" BOX, CREW CAB - 6'2" BOX, CREW CAB LS - 6'2" BOX, CREW CAB LT - 6'2" BOX, EXTENDED CAB - 6'2" BOX, LS CREW CAB - 5'2" BOX, LS EXTENDED CAB - 6'2" BOX, LT CREW CAB - 5'2" BOX, LT EXTENDED CAB - 6'2" BOX | 6 Cyl 3.6L
- 2004-2012 Chevrolet Colorado | CREW CAB, EXTENDED CAB, EXTENDED LENGTH, PICKUP | 4 Cyl 2.8L, 4 Cyl 2.9L, 5 Cyl 3.5L, 5 Cyl 3.7L
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Chevrolet Colorado Arm Assembly, Valve Rocker Switching
Part Number: 12666601
$34.01 MSRP: $58.67
You Save: $24.66 (43%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: ARM, Engine Valve Rocker; Rocker Arm
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2017-2022 Chevrolet Colorado | CREW CAB - 5'2" BOX, CREW CAB - 6'2" BOX, CREW CAB LS - 6'2" BOX, CREW CAB LT - 6'2" BOX, EXT CAB - 6'2" BOX, EXTENDED CAB - 6'2" BOX, LS CREW CAB - 5'2" BOX, LS EXTENDED CAB - 6'2" BOX, LT CREW CAB - 5'2" BOX, LT EXTENDED CAB - 6'2" BOX | 6 Cyl 3.6L
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Chevrolet Colorado ARM ASM-VLV RKR
Part Number: 12693909
$14.92 MSRP: $36.02
You Save: $21.10 (59%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Rocker Arm
- Replaces: 12565203, 24100004, 12656486
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2015-2022 Chevrolet Colorado | CREW CAB - 5'2" BOX, EXT CAB - 6'2" BOX, EXTENDED CAB - 6'2" BOX, LS CREW CAB - 5'2" BOX, LS EXTENDED CAB - 6'2" BOX, LT CREW CAB - 5'2" BOX, LT EXTENDED CAB - 6'2" BOX | 4 Cyl 2.5L
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Chevrolet Colorado Arm Assembly, Vlv Rkr
Part Number: 12701225
$2.86 MSRP: $4.34
You Save: $1.48 (35%)
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Product Specifications
- Other Name: Rocker Arm
- Replaces: 12663276
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2023-2024 Chevrolet Colorado | CREW CAB - 5'2" BOX, LS CREW CAB - 5'2" BOX, LS CREW CAB-5'2" BOX(I), LT CREW CAB - 5'2" BOX, LT CREW CAB-5'2" BOX(I), LTZ CREW CAB-5'2" BOX, SPORT CREW-5'2" BOX(NA) | 4 Cyl 2.7L
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Chevrolet Colorado Arm Assembly, Valve Rocker
Part Number: 12654646
$4.82 MSRP: $7.58
You Save: $2.76 (37%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: ARM, Engine Valve Rocker; Rocker Arm
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2017-2022 Chevrolet Colorado | CREW CAB - 5'2" BOX, CREW CAB - 6'2" BOX, CREW CAB LS - 6'2" BOX, CREW CAB LT - 6'2" BOX, EXT CAB - 6'2" BOX, EXTENDED CAB - 6'2" BOX, LS CREW CAB - 5'2" BOX, LS EXTENDED CAB - 6'2" BOX, LT CREW CAB - 5'2" BOX, LT EXTENDED CAB - 6'2" BOX | 6 Cyl 3.6L
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Chevrolet Colorado Arm Assembly, Valve Rocker
Part Number: 12625214
$36.46 MSRP: $57.37
You Save: $20.91 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: ARM, Engine Valve Rocker; Rocker Arm
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2016-2022 Chevrolet Colorado | CREW CAB - 5'2" BOX, CREW CAB - 6'2" BOX, CREW CAB LS - 6'2" BOX, CREW CAB LT - 6'2" BOX, EXT CAB - 6'2" BOX, EXTENDED CAB - 6'2" BOX, LS CREW CAB - 5'2" BOX, LS EXTENDED CAB - 6'2" BOX, LT CREW CAB - 5'2" BOX, LT EXTENDED CAB - 6'2" BOX | 4 Cyl 2.8L Diesel

Chevrolet Colorado Rocker Arm

The Rocker Arm is an important part of Chevrolet Colorado vehicles specifically on the satisfactions of the valvetrain mechanism where motion is smoothly transferred from the pushrod to the intake and exhaust valves. In most cases, made out of stamped steel or aluminum, the Rocker Arm transforms the force applied by the pushrod vertically to the appropriate force needed to lift the valves. In increased RPM applications aluminum is used due to its light weighting properties while cast iron or forged carbon steel is used in diesel engines for increased strength. Chevrolet Colorado that is in the market may not have the same type of Rocker Arms as it may be either of the traditional or the roller rocker type. There's nothing like the roller rockers, for instance, those that have the usage of needle bearings when it comes to minimizing the friction, are better both for the overhead valve as well as the overhead camshaft engines. The rocker ratio which is between 1.5:1 and 1.8:1 in modern engine increases the performance of the engine through magnifying the lift from the camshaft. There are also used the upgraded fulcrum bearings for the management of stress in vehicles with high rpm Chevrolet Colorado engines.

Each OEM Chevrolet Colorado Rocker Arm 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 Colorado Rocker Arm Parts Questions & Experts Answers

Arm,Valve Rocker
24100294
Q: How to remove and reinstall Pushrod and Rocker Arm in V8 engine on Chevrolet Colorado?
A: To remove the valve covers from the Cylinder Heads, first loosen the rocker arm pivot bolts one at a time and take out the rocker arms and bolts, followed by the pivot support pedestal, ensuring to keep track of the component positions for reinstallation. Store each set of components separately in marked containers to maintain their original locations, including the rocker arms and pivot support. Next, remove the pushrods and store them in order to avoid mixing them up during installation. Inspect each rocker arm for wear, cracks, and damage, particularly at the contact points with the pushrods and valve stems, and check the pivot bearings for binding and roughness; if worn or damaged, the entire rocker arm will need replacement. Ensure the hole at the pushrod end of each rocker arm is clear, and inspect the pushrods for cracks and excessive wear, checking that the oil hole is not clogged and rolling each pushrod across a piece of plate glass to detect any bends. For installation, lubricate the lower end of each pushrod with clean engine oil or assembly lube and install them in their original locations, ensuring each pushrod seats completely in the lifter socket. Apply engine assembly lube to the ends of the valve stems and upper ends of the pushrods to prevent damage during initial start-up, and also apply clean engine oil to the pivot shaft and bearing of each rocker arm before loosely installing the rocker arms in their original locations without tightening the bolts. Rotate the crankshaft until the number one piston is at TDC on the compression stroke, ensuring both pushrods for the number one cylinder are in the lowered position, then tighten the intake valve rocker arms for cylinders 1, 3, 4, and 5, and the exhaust rocker arms for cylinders 1, 2, 7, and 8, to the specified torque. Rotate the crankshaft 360 degrees and tighten the intake valve rocker arms for cylinders 2, 6, 7, and 8, and the exhaust rocker arms for cylinders 3, 4, 5, and 6, to the specified torque. Finally, install the valve covers, start the engine, and listen for unusual valve train noises while checking for oil leaks at the valve cover gaskets.