Before you order: GM part numbers change by option code and year. Confirm against your VIN with a GM dealer. Callout numbers on this page are our own and do not match GM's diagram numbers. Quantities are per vehicle (both sides).
Engine: this page covers the 3.0L V6 (2010-2012) and 3.6L V6 (2013-2017). For the 2.4L 4-cylinder, see Timing Chain 2.4L.
Engine: this page covers the 3.0L V6 (2010-2012) and 3.6L V6 (2013-2017). For the 2.4L 4-cylinder, see Timing Chain 2.4L.
| # | Part | GM OEM # | Fitment & notes | Buy |
|---|---|---|---|---|
| 1 | Timing chain kit (not illustrated) | 12700436 2010-2013 12700437 2014-2016 | V6 only. GM lists the kit with the primary chain, primary tensioner and gasket, both secondary chains, both secondary tensioners and their gaskets. 12700437 is marked "use with aluminum cam covers only". GM shows no kit for 2017 on these diagrams; confirm by VIN. Not illustrated. | Check price on Amazon |
| 2 | Sprocket, crankshaft | 12645465 | V6 only. | Check price on Amazon |
| 3 | Chain, primary (camshaft intermediate drive) | 12637744 | V6 only. Also in kit 1. | Check price on Amazon |
| 4 | Tensioner, primary chain | 12609263 | V6 only. Sold without bolts or gasket. Also in kit 1. | Check price on Amazon |
| 5 | Guide, primary chain, lower | 12586959 | V6 only. GM also lists it as part of the oil pump assembly (see V6 Oil Pump & Pan). | Check price on Amazon |
| 6 | Guide, primary chain, upper | 12597417 | V6 only. | Check price on Amazon |
| 7 | Sprocket, intermediate (idler) | 12612839 Driver (LH) 12612838 Passenger (RH) | V6 only. Includes bolt (8). | Check price on Amazon |
| 8 | Bolt, idler sprocket (M6x1x70) | 11588252 | Qty 2. V6. | Check price on Amazon |
| 9 | Chain, secondary (cam drive) | 12637743 | Qty 2 (one per bank). V6 only. Also in kit 1. | Check price on Amazon |
| 10 | Guide, secondary chain (fixed) | 12600461 Driver (LH) 12600462 Passenger (RH) | V6 only. | Check price on Amazon |
| 11 | Guide, secondary chain (pivot arm) | 12623513 Driver (LH) 12623514 Passenger (RH) | V6 only. | Check price on Amazon |
| 12 | Tensioner, secondary chain | 12609261 Driver (LH) 12609259 Passenger (RH) | V6 only. Sold without bolts or gasket. Also in kit 1. | Check price on Amazon |
| 13 | Gasket, chain tensioner | 12589477 Primary 12589478 Driver (LH) 12589479 Passenger (RH) | V6 only. Also in kit 1. | Check price on Amazon |
| 14 | Bolt, chain tensioner (M8x1.25x43) | 11561619 | Qty 2 per GM list. V6. | Check price on Amazon |
| 15 | Bolt, chain guide (M8x1.25x35) | 11588725 | Qty 2 per GM list. Position on the drawing is representative. | Check price on Amazon |
| 16 | Actuator, camshaft position (exhaust) | 12684832 | Qty 2. V6 only. | Check price on Amazon |
| 17 | Actuator, camshaft position (intake) | 12684831 Driver (LH) 12684830 Passenger (RH) | V6 only. 12684831 also services 12626161. Older listings say to use thrust washer 12632859 unless the front cam cap is marked 12634613. | Check price on Amazon |
| 18 | Bolt, camshaft actuator (M10x1.5x80) | 11588279 | Qty 4. V6. | Check price on Amazon |
| 19 | Washer, camshaft thrust (not illustrated) | 12632859 12630941 | 2010-2011 V6 only, listed on the 2010 diagram. Not needed with front cam caps marked 12634613. Check your actuator number before ordering. Not illustrated. | Check price on Amazon |
The illustration is an original drawing made for this site. It is not to scale and the shapes are representative.