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GM 12556298
Rocker Arms

2001-2007 GM

Customer Questions & Expert Answers (10)
GM 12556298 Rocker Arms
  • Part Description
    Arm, Valve Rocker; Rocker Arm
  • Manufacturer
    General Motors
Make sure this part fits
$26.68 MSRP: $43.96
You Save: $17.28 (40%)
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  • Vehicle Fitment

    Year Make Model Trim Engine
    2002-2006 Chevrolet Avalanche 2500Base, LS, LT8 Cyl 8.1 L GAS
    2001-2002 Chevrolet Express 3500Base, LS8 Cyl 8.1 L GAS
    2001-2006 Chevrolet Silverado 2500 HDBase, LS, LT, WT8 Cyl 8.1 L GAS
    2007 Chevrolet Silverado 2500 HD ClassicLS, LT, WT8 Cyl 8.1 L GAS
    2001-2006 Chevrolet Silverado 3500Base, LS, LT, WT8 Cyl 8.1 L GAS
    2007 Chevrolet Silverado 3500 ClassicLS, LT, WT8 Cyl 8.1 L GAS
    2001-2006 Chevrolet Suburban 2500Base, LS, LT8 Cyl 8.1 L GAS
    2001-2002 GMC Savana 3500Base, SLT8 Cyl 8.1 L GAS
    2001-2006 GMC Sierra 2500 HDBase, SL, SLE, SLT, WT8 Cyl 8.1 L GAS
    2007 GMC Sierra 2500 HD ClassicSL, SLE, SLT, WT8 Cyl 8.1 L GAS
    View More
    Warning: California's Proposition 65
  • Customer Questions & Expert Answers

    Q:
    Is this 12556298 designed for my car? Posted by ChevyPartsDeal Specialist
    A:
    Please Select Your Vehicle model to see if part number 12556298 is suitable before ordering.
    Posted by ChevyPartsDeal Specialist
    Q:
    How should the valve pushrods be installed for the 2006 Chevrolet Avalanche 2500? Posted by Customer
    A:
    Install the valve pushrods, ensuring the longer exhaust valve pushrods are placed correctly.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Rocker Arm
    Q:
    What if only the valve pushrod is being replaced for the 2001 Chevrolet Express 3500? Posted by Customer
    A:
    Back off the valve rocker arm nut until the valve rocker arm can rotate away from the pushrod, then remove the valve pushrod.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Rocker Arm
    Q:
    What is the final step in the process for the 2006 Chevrolet Silverado 3500? Posted by Customer
    A:
    Install the rocker arm cover.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Rocker Arm
    Q:
    What is the final step in the process for the 2007 Chevrolet Silverado 3500 Classic? Posted by Customer
    A:
    Install the rocker arm cover.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Rocker Arm
    Q:
    What is the procedure for installation for the 2002 Chevrolet Suburban 2500? Posted by Customer
    A:
    Apply sealant to the valve rocker arm stud-to-cylinder head threads, install the pushrod guides and valve rocker arm studs, and tighten them to 50 Nm (37 ft. lbs.).
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Rocker Arm
    Q:
    What is the first step to replace the valve rocker arm and push rod for the 2002 GMC Savana 3500? Posted by Customer
    A:
    Remove the valve rocker arm cover, ensuring to store used components in order for reassembly.
    Posted by ChevyPartsDeal Specialist
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    Q:
    What lubricant should be used on the valve rocker arm surfaces for the 2006 GMC Sierra 3500? Posted by Customer
    A:
    Coat the valve rocker arm and valve rocker arm ball bearing surfaces with lubricant GM P/N 12345501 (Canadian P/N 992704).
    Posted by ChevyPartsDeal Specialist
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    Q:
    What is the engine firing order for the 2007 GMC Sierra 3500 Classic? Posted by Customer
    A:
    The engine firing order is 1, 8, 7, 2, 6, 5, 4, 3, with cylinders 1, 3, 5, and 7 on the left bank.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Rocker Arm
    Q:
    How should the rocker arm bolts be tightened for the 2004 GMC Yukon XL 2500? Posted by Customer
    A:
    In this firing position, tighten the rocker arm bolts for cylinders 1, 2, 7, and 8 exhaust valves to 30 Nm (22 ft. lbs.) and for cylinders 1, 3, 4, and 5 intake valves to 30 Nm (22 ft. lbs.). Rotate the crankshaft 360 degrees and then tighten the rocker arm bolts for cylinders 3, 4, 5, and 6 exhaust valves to 30 Nm (22 ft. lbs.) and for cylinders 2, 6, 7, and 8 intake valves to 30 Nm (22 ft. lbs.).
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Rocker Arm
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

OEM GM Rocker Arms 12556298 Designed for Proper Fit and Performance

Original OEM GM parts deliver superior quality and meet all performance standards needed for optimal automotive operation. The authentic part identified by 12556298 Rocker Arms is available in the market under the name GM Rocker Arm. This genuine product has a full warranty coverage from the manufacturer available at all authorized GM dealers throughout the United States. This part 12556298 Rocker Arms fits certain Chevrolet Silverado 2500 HD, Express 3500, Silverado 3500 models, as well as GMC Sierra 2500 HD, Savana 3500, Sierra 3500 models.
The original GM component designated by Manufacturer Part Number 12556298 maintains top performance when functioning as the Arm, Valve Rocker; Rocker Arm unit. The component 12556298 is constructed from durable material and its dimensions span 4.2 x 2.2 x 1.6 inches while weighing 0.60 Pounds. The Direct Replacement component is ready in New condition to ensure full compatibility with your vehicle system. This component receives the designation of Arm, Engine Valve Rocker. The part 12556298 has available replacement options. Each vehicle needs 16 units of the part marked as SKU 12556298. GM manufacturer provides a warranty that ensures reliable operation of this product. The Shipping Policy and Return Policy pages outline complete details regarding shipping procedures and return processes.
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