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Genuine GMC Sierra Crankshaft
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24 Crankshafts found
GMC Sierra CRANKSHAFT ASM,.
Part Number: 19431873$461.48 MSRP: $763.62You Save: $302.14 (40%)Ships in 1-3 Business Days
GMC Sierra Crankshaft Assembly
Part Number: 12664179$792.70 MSRP: $1311.98You Save: $519.28 (40%)Ships in 1-3 Business DaysGMC Sierra Crankshaft Assembly, .
Part Number: 12680207$1585.43 MSRP: $2527.54You Save: $942.11 (38%)
GMC Sierra Engine Crankshaft
Part Number: 12555637$492.97 MSRP: $815.92You Save: $322.95 (40%)Ships in 1-3 Business DaysGMC Sierra Crankshaft Assembly, .
Part Number: 12708884$896.82 MSRP: $1430.35You Save: $533.53 (38%)Ships in 1-3 Business Days
GMC Sierra Engine Crankshaft
Part Number: 10243070$946.66 MSRP: $1566.80You Save: $620.14 (40%)Ships in 1-3 Business DaysGMC Sierra Crankshaft Assembly
Part Number: 55510071$492.14 MSRP: $784.74You Save: $292.60 (38%)Ships in 1-3 Business DaysGMC Sierra Crankshaft Assembly, .
Part Number: 12680208$1551.17 MSRP: $2058.69You Save: $507.52 (25%)Ships in 1-3 Business Days
GMC Sierra CRANKSHAFT ASM-.
Part Number: 12712274$345.14 MSRP: $550.46You Save: $205.32 (38%)Ships in 1-2 Business DaysGMC Sierra Crankshaft Assembly, .
Part Number: 12712984$1059.19 MSRP: $1375.58You Save: $316.39 (23%)
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1-20 of 24 Results
GMC Sierra Crankshaft
The GMC Sierra Crankshaft is responsible for taking the up and down motion of the pistons and turning it into smooth rotation that eventually causes the transmission, axles, and wheels to spin. Housed low in the cylinder block, this Crankshaft has offset throws to which the connecting rods fasten, converting linear force into torque with each stroke. Early and lower output versions in the Sierra line use stout cast-iron construction, and high horsepower Sierra engines step up to forged steel, which increases strength by resisting flex under heavier loads. Regardless of the material, the Crankshaft is a precision balanced part meant to last the life of a GMC truck when oil is kept clean and abundant. Dirt or reduced lubrication allows metal surfaces to score, resulting in widening of clearances that invite knock, so timely oil service guards the journals and the Crankshaft itself. Should vibration signal damage, a worn shaft may require replacement, which requires complete engine removal, bearing inspection, fresh moly grease on journals, correct cap sequencing, and manufacturer torque values since any bind once caps are tightened will shorten the lifespan of the new Crankshaft quickly. With care, the GMC powerplant holds true.
Each OEM GMC Sierra Crankshaft 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 Sierra Crankshaft Parts Questions & Experts Answers
- Q: How to remove and install a crankshaft on GMC Sierra?A:When you want to remove the crankshaft, mount a dial indicator and touch its end with that of the crankshaft. The next step is prying it backward to zero the dial indicator and then forward to check the reading. Check whether there is a wear on the crankshaft thrust surfaces if it has an endplay more than 0.003 to 0.010 inches. Loosen main bearing cap bolts and remove caps in order to remove crankshaft from these engines. Be mindful of the weight when removing crankshafts from engines. Crankshaft installation involves placing the engine block upside down on its bottom surface and removal of main bearing caps in this position. Plastigage is used for checking the oil clearance for main bearings while the connecting rod bolts are tightened using clean engine oil on their threads according to this repair manual. The main bearing caps must now be removed by lifting them up slowly after loosening all bolts as described in this manual. Comparing these crushed Plastigage wires' widths indicates how much space between cylinder block and these rings exist-it means one should scrape off all residium that could still be stuck onto them so they can rise above them freely at any time if necessary (Hartzell, 2011). After applying lubricant onto both surfaces where they meet each other, place these connecting rod back into its original location again since new bearings have been installed (Hartzell, 2011). Changing connecting rod bearings requires cleaning mating surfaces of engine block and bearing cap plus lubing faces for inserts before tightening main bearing cap bolts using clean engine oil on bolt threads (Hartzell, 2011). Check for binding by seeing if there is any resistance when rotating by hand or recheck it after rotating through one full revolution as per instructions given in this sectional maintenance manual (Hartzell, 2011).
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