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GM 12588614 Engine Crankshaft

2007-2014 GM

Customer Questions & Expert Answers (11)
GM 12588614 Engine Crankshaft
  • Part Description
    Crankshaft Asm ; Crankshaft, Engine
  • Manufacturer
    General Motors
Make sure this part fits
$272.77 MSRP: $431.12
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  • Related Parts
  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers
  • Product Specifications

    BrandGenuine GM
    Manufacturer Part Number12588614
    Part DescriptionCrankshaft Asm ; Crankshaft, Engine
    Other NamesCrankshaft
    Item Dimensions31.5 x 9.5 x 9.3 inches
    Item Weight55.70 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU12588614
    WarrantyThis genuine GM part is guaranteed by GM's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California's Proposition 65
  • Vehicle Fitment

    Year Make Model Engine Important vehicle option details
    2007 Buick Rainier8 Cyl 5.3L4 DOOR
    2007-2013 Chevrolet Avalanche8 Cyl 5.3L, 8 Cyl 5.3L Flex1/2 TON
    2009-2012 Chevrolet Colorado8 Cyl 5.3LCREW CAB, EXTENDED CAB, EXTENDED LENGTH, PICKUP
    2008-2014 Chevrolet Express8 Cyl 5.3L1/2 TON CARGO EXPRESS, 1/2 TON CARGO SAVANA, 1/2 TON PASSENGER EXPRESS, 1/2 TON PASSENGER SAVANA
    2007-2013 Chevrolet Silverado8 Cyl 5.3L, 8 Cyl 5.3L FlexCREW 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
    2007-2014 Chevrolet Suburban8 Cyl 5.3L, 8 Cyl 5.3L Flex1/2 TON
    2007-2014 Chevrolet Tahoe8 Cyl 5.3L, 8 Cyl 5.3L Flex4 DOOR 1/2 TON
    2007-2009 Chevrolet Trailblazer8 Cyl 5.3L4 DOOR
    2009-2012 GMC Canyon8 Cyl 5.3LPICKUP, PICKUP CREW CAB, PICKUP EXTENDED CAB, PICKUP EXTENDED LENGTH
    2007-2009 GMC Envoy8 Cyl 5.3L4 DOOR
    View More
  • Customer Questions & Expert Answers

    Q:
    I am wonder if this is complete and correct part for my vehicle. Posted by GMPartsGiant Specialist
    A:
    You can Select Your Vehicle to check if 12588614 fits your vehicle.
    Posted by GMPartsGiant Specialist
    Q:
    How can the crankshaft be removed from the engine after it has been taken out on Chevrolet Express? Posted by Customer
    A:
    The crankshaft can only be accessed if the entire engine has been pulled out of the car accompanied with conditions such as; flywheel, crankshaft pulley, timing chain, engine oil pan, oil pump, oil filter, piston and connecting rod assemblies being removed. Before removing the crankshaft, face the crankshaft and with the help of dial indicator fix the end play of the crank shaft. With the crankshaft front (throws away from the water pump), set the indicator to zero; then, moving the shaft to the rear (throws towards the water pump), take the reading; the endplay should measure between 0.003 and 0.010 inches. If a dial indicator is not available feeler gauges can be used in order to measure clearance. Gradually undo the main bearing cap bolts, give the assembly a gentle tap with a soft-face hammer and then raise off the assembly. While lifting the crankshaft there is always advisable to do it with help because of its size. Before installing the crankshaft, clean both compartments of the engine block and the crankshaft and then turn the block upside down, take the main bearing cap assembly off, and clean the associated bearing surfaces. New upper main bearing inserts should be installed and checked for proper alignment of oil holes and also the thrust washers should be placed properly depending on the type of engine used. Clean the lower bearing inserts and they are then fitted into the main bearing cap assembly; they must fit perfectly and without any signs of wear or tear. Following the cleaning of the crankshaft, the crankshaft should be laid on the block and the main bearing oil clearance should be determined using Plastigage. The main bearing caps must be fitted without moving the Plastigage and the bolts must be tightened in the pattern that is recommended. The caps must be unscrewed to measure the Plastigage and to check the clearance; if beyond the limit, check for any interference, dirt or oil and if inserts are worn out they must be changed. Remove the Plastigage from the journals and bearing faces and lubricate the bearing surfaces with the assembly lube or fresh grease before putting back the crankshaft. Bolt the caps of the main bearing in position such that the arrows are facing forward, and tighten all the bolts. Check and recheck the crankshaft end-play and turn the crankshaft with your hands so that it can move with ease. Last of all, fit the new rear main oil seal into its respective position and sequence the engine as prescribed whereby the oil seal is fastened towards the front of the engine, so that the crankshaft will push it firmly into position.
    Posted by GMPartsGiant Specialist
    Q:
    How can the crankshaft be removed and reinstalled on Chevrolet Trailblazer? Posted by Customer
    A:
    The crankshaft can be removed only if the engine is pulled out of the vehicle presuming that the driveplate, crankshaft pulley, oil pan, timing chain, and piston/connecting rod assemblies have been removed. Prior to crankshaft removal, check and record crankshaft end play with a dial indicator placed in line with the crankshaft. Move the crankshaft to the rear and bring the indicator to zero and then move the crankshaft to the front and check the new reading which should normally be between 0.003 to 0.010 inch. If a dial indicator cannot be used, clearance may be measured using feeler gauges as can be observed in Fig. Tighten the main bearing cap bolts gradually until they are lightly seized, then remove the main bearing cap stiffener and if necessary mark the caps 1 & 2. It is safer to lift out the crankshaft, if possible with aid, and fit the main bearing caps and the stiffener very loosely but the correct way around. Bearing in mind installation, the block should be oriented such that it's resting on its bottom end; you will also need to pull out any stock bearing inserts and clean the bearing housing machined surfaces. Place new upper main bearing inserts into the main bearing saddles and make certain that oil holes coincide; fit the thrust washer to the number 5 crankshaft journal. Scrub the crankshaft and the insert end of the bearing and put the crankshaft into place. Inspect the oil clearance of the main bearing with the Plastigage installed; it should be installed just slightly less than the width of the journal and tighten the main bearing cap assembly without disturbing the Plastigage. In the designed sequence, further tighten the bolts and then take out the bolts and with the help of scale measure the Plastigage width. If the clearance is wrong it is wise to check for cleanliness and also consider having a change in the bearing inserts. It is always recommended that once Plastigage has been scraped off one should apply a thin coat of grease or assembly lube to the bearing surface as well as the thrust faces and re-fits crankshaft and main bearing cap. Loosening of bolts results into incorrect crank shaft end play so tighten the bolts and check end play and see that it is correct. Try and turn the crankshaft by hand so as to check for tightness, and if okay go ahead and fit the new rear main oil seal.
    Posted by GMPartsGiant Specialist
    Q:
    What should you do after determining the main bearing oil clearance for the 2010 Chevrolet Avalanche? Posted by Customer
    A:
    Scrape off any Plastigage residue and lift the crankshaft out of the cylinder block. Apply lubricant to the bearing surfaces and lay the crankshaft back in place. Apply lubricant to the bearing insert faces and clean the engine block and bearing cap mating surfaces. Apply clean engine oil to all bolt threads and tighten the main bearing cap bolts to the specified torque.
    Posted by GMPartsGiant Specialist
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    Q:
    What preparations should be made for the installation of the crankshaft for the 2012 Chevrolet Colorado? Posted by Customer
    A:
    For installation, ensure the engine block and crankshaft are clean and inspected. Position the block upside down, remove any original bearing inserts, and clean the surfaces thoroughly.
    Posted by GMPartsGiant Specialist
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    Q:
    How do you measure the endplay of the crankshaft for the 2007 Chevrolet Suburban? Posted by Customer
    A:
    Mount a dial indicator and touch the end of the crankshaft. Pry the crankshaft to the rear and zero the dial indicator, then pry it to the front and check the reading.
    Posted by GMPartsGiant Specialist
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    Q:
    How do you determine the main bearing oil clearance for the 2008 GMC Yukon? Posted by Customer
    A:
    Remove the bolts and lift off the main bearing caps, then compare the width of the crushed Plastigage to determine the main bearing oil clearance.
    Posted by GMPartsGiant Specialist
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    Q:
    What should you do after determining the main bearing oil clearance for the 2009 Chevrolet Tahoe? Posted by Customer
    A:
    Scrape off any Plastigage residue and lift the crankshaft out of the cylinder block. Apply lubricant to the bearing surfaces and lay the crankshaft back in place. Apply lubricant to the bearing insert faces and clean the engine block and bearing cap mating surfaces. Apply clean engine oil to all bolt threads and tighten the main bearing cap bolts to the specified torque.
    Posted by GMPartsGiant Specialist
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    Q:
    What is the final step regarding the rear main oil seal for the 2010 GMC Canyon? Posted by Customer
    A:
    Finally, install the new rear main oil seal in the retainer, but wait to install the retainer until the balance shafts are in place.
    Posted by GMPartsGiant Specialist
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    Q:
    What should you do when installing the crankshaft for the 2011 GMC Sierra? Posted by Customer
    A:
    Position the engine block with the bottom facing up and remove the main bearing caps. Clean the bearing surfaces and install new bearing inserts. Check the main bearing oil clearance using Plastigage. Apply clean engine oil to all bolt threads and tighten the bolts to the specified torque.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Crankshaft
    Q:
    How do you determine the main bearing oil clearance for the 2007 Chevrolet Silverado? Posted by Customer
    A:
    Remove the bolts and lift off the main bearing caps, then compare the width of the crushed Plastigage to determine the main bearing oil clearance.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Crankshaft
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

Genuine GM Part 12588614, the Right Choice

To ensure reliability, purchase GM part # 12588614 Engine Crankshaft. It is sometimes referred to as GM Crankshaft. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Every single part passed stringent quality testing, so you can be sure that it's safe, durable, and built to perform like your original parts. This part fits specific Buick Rainier models. It fits Chevrolet Express, Silverado, Tahoe. It also fits GMC Savana, Sierra, Yukon. This also fits Hummer H3, H3T.

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