GM Genuine Parts Crankshaft Sprocket (not shown)

About this product

GM Genuine Parts Engine Timing Crankshaft Sprockets are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These sprockets are part of the valve train system that opens and closes the valves at the appropriate time in the combustion cycle. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Warning WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Gear attached to the crankshaft that timing chain rides on
Synchronizes with the camshaft sprocket with the use of a timing chain
Part of the valve train system that opens and closes the valves at the appropriate time in the combustion cycle
Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
GM regularly updates production and service part designs to integrate new materials and technologies

Outside Diameter2.72 in / 69 mm

Inside Diameter1.49 in / 37.82 mm

ClassificationOE

Thickness1.73 in / 43.87 mm

MaterialAlloy Steel

Tooth Quantity22

Outside Diameter2.72 in / 69 mm

ClassificationOE

MaterialAlloy Steel

Inside Diameter1.49 in / 37.82 mm

Thickness1.73 in / 43.87 mm

Tooth Quantity22

24 Months/Unlimited Miles Limited Warranty for Parts (plus Labor if installed by a GM dealer)

Please visit our warranty page on Gmparts.com for full warranty details.

Good Maintenance Practices:

Before purchasing and installing an engine timing crankshaft sprocket, make sure it is the correct fit for your vehicle
Keep engine oil changed and level full for proper lubrication
Keep coolant level full to prevent overheating
Have valve train serviced by a technician at first sign of problem
Regularly inspect engine timing crankshaft sprockets for signs of damage or wear, and replace them if signs of damage are found

Signs of wear for engine timing crankshaft sprockets include but are not limited to:

Poor engine performance
Rough engine idle
Exhaust backfire
Excessive noise in valve train

Model	Body Style	Year(s)
Canyon		2009, 2010, 2011, 2012
Envoy		2005, 2006, 2007, 2008, 2009
Envoy XL		2003, 2004, 2005, 2006
Envoy XUV		2004, 2005
Savana 1500		2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014
Savana 2500		2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
Savana 3500		2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
Savana 4500		2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
Sierra 1500	Extended Cab Pickup	1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
Sierra 1500 Classic		2007
Sierra 1500 HD		2001, 2002, 2003, 2004, 2005, 2006
Sierra 1500 HD Classic		2007
Sierra 2500		1999, 2000, 2001, 2002, 2003, 2004
Sierra 2500 HD		2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
Sierra 2500 HD Classic		2007
Sierra 3500		2001, 2002, 2003, 2004, 2005, 2006
Sierra 3500 Classic		2007
Sierra 3500 HD		2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
Yukon		2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014
Yukon XL 1500		2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014
Yukon XL 2500		2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013

About this product

Warning WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Gear attached to the crankshaft that timing chain rides on
Synchronizes with the camshaft sprocket with the use of a timing chain
Part of the valve train system that opens and closes the valves at the appropriate time in the combustion cycle
Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
GM regularly updates production and service part designs to integrate new materials and technologies

Outside Diameter2.72 in / 69 mm

Inside Diameter1.49 in / 37.82 mm

ClassificationOE

Thickness1.73 in / 43.87 mm

MaterialAlloy Steel

Tooth Quantity22

Outside Diameter2.72 in / 69 mm

ClassificationOE

MaterialAlloy Steel

Inside Diameter1.49 in / 37.82 mm

Thickness1.73 in / 43.87 mm

Tooth Quantity22

24 Months/Unlimited Miles Limited Warranty for Parts (plus Labor if installed by a GM dealer)

Please visit our warranty page on Gmparts.com for full warranty details.

Good Maintenance Practices:

Before purchasing and installing an engine timing crankshaft sprocket, make sure it is the correct fit for your vehicle
Keep engine oil changed and level full for proper lubrication
Keep coolant level full to prevent overheating
Have valve train serviced by a technician at first sign of problem
Regularly inspect engine timing crankshaft sprockets for signs of damage or wear, and replace them if signs of damage are found

Signs of wear for engine timing crankshaft sprockets include but are not limited to:

Poor engine performance
Rough engine idle
Exhaust backfire
Excessive noise in valve train

Model	Body Style	Year(s)
Canyon		2009, 2010, 2011, 2012
Envoy		2005, 2006, 2007, 2008, 2009
Envoy XL		2003, 2004, 2005, 2006
Envoy XUV		2004, 2005
Savana 1500		2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014
Savana 2500		2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
Savana 3500		2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
Savana 4500		2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
Sierra 1500	Extended Cab Pickup	1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
Sierra 1500 Classic		2007
Sierra 1500 HD		2001, 2002, 2003, 2004, 2005, 2006
Sierra 1500 HD Classic		2007
Sierra 2500		1999, 2000, 2001, 2002, 2003, 2004
Sierra 2500 HD		2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
Sierra 2500 HD Classic		2007
Sierra 3500		2001, 2002, 2003, 2004, 2005, 2006
Sierra 3500 Classic		2007
Sierra 3500 HD		2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
Yukon		2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014
Yukon XL 1500		2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014
Yukon XL 2500		2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013

Frequently Asked Questions

Yes. Always consult the Vehicle Owner’s manual or an expert technician before making any repairs or adjustments.

Replacing any part of the timing chain components require advanced technical knowledge and special tools. Consult a certified technician.

About this product

Product details

Specifications

Warranty

Maintenance

Good Maintenance Practices:

Signs of wear for engine timing crankshaft sprockets include but are not limited to:

Fits these vehicles

About this product

Product details

Specifications

Warranty

Maintenance

Good Maintenance Practices:

Signs of wear for engine timing crankshaft sprockets include but are not limited to:

Fits these vehicles

Frequently Asked Questions

Should the Vehicle Owner’s manual or an expert technician be consulted before making any repairs or adjustments?

Can I replace a bad sprocket myself?

GM Genuine Parts Crankshaft Sprocket (not shown)

GM Genuine Parts Crankshaft Sprocket (not shown)