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 V6 only: 3.0L (LF1 2010, LFW 2011-2012) and 3.6L (LFX 2013-2017). For the 2.4L, see Engine Block 2.4L. Pistons are side-specific (driver / passenger bank). Bearing kits changed for 2012. GM also lists export-only and Brazil-only pistons and bearings for these engines; they are left out here. The timing chain and cam actuators are on the Timing Chain V6 page. The drawing is simplified and not to scale.
Engine: this page covers the V6 only: 3.0L (LF1 2010, LFW 2011-2012) and 3.6L (LFX 2013-2017). For the 2.4L, see Engine Block 2.4L. Pistons are side-specific (driver / passenger bank). Bearing kits changed for 2012. GM also lists export-only and Brazil-only pistons and bearings for these engines; they are left out here. The timing chain and cam actuators are on the Timing Chain V6 page. The drawing is simplified and not to scale.
| # | Part | GM OEM # | Fitment & notes | Buy |
|---|---|---|---|---|
| 1 | Crankshaft, engine | 12661864 3.0L 2010-2012 12661873 3.6L 2013-2017 | V6. The 3.6L crankshaft comes with the balancer key. | Check price on Amazon |
| 2 | Key, crankshaft balancer (not illustrated) | 12601937 | V6 3.0L and 3.6L. Part of the crankshaft (1). | Check price on Amazon |
| 3 | Bearing kit, crankshaft main (#1, 2, 4 standard) | 12648786 2010-2011 12643670 2012-2017 | V6. Qty 3. Upper and lower shells. | Check price on Amazon |
| 4 | Bearing kit, crankshaft thrust (#3 standard) (not illustrated) | 12648787 2010-2011 12643668 2012-2017 | V6. Center main (thrust) bearing. | Check price on Amazon |
| 5 | Bolt, main bearing cap (bottom, long, M10x2x102.5) | 12560272 | V6. Qty 8 per GM. | Check price on Amazon |
| 6 | Seal, crankshaft rear oil | 12637710 | V6. GM: clean all sealing surfaces with brake cleaner and dry before install. | Check price on Amazon |
| 7 | Plate, automatic transmission flexible (flexplate) | 12597026 | V6 automatic. | Check price on Amazon |
| 8 | Pin, transmission locating | 12597210 | V6. Qty 2. | Check price on Amazon |
| 9 | Rod, connecting (with bolts) | 12609597 3.0L 2010-2012 12691084 3.6L 2013-2017 | V6. Qty 6. Includes the rod bolts (10). | Check price on Amazon |
| 10 | Bolt, connecting rod (M9x1x53) | 11519680 | V6. Qty 12. Part of rod (9). | Check price on Amazon |
| 11 | Bearing kit, connecting rod (standard) | 12636003 2010-2011 12643667 2012-2017 | V6. Qty 6. | Check price on Amazon |
| 12 | Piston (standard, with pin) | 12631195 3.0L passenger side 12631196 3.0L driver side 12686358 3.6L driver side, with rings 12686359 3.6L passenger side, with rings | V6. Qty 3 per side. 3.0L pistons (2010-2012) come with pin and retainers; rings are sold separately (14). 3.6L pistons (2013-2017) come with pin, retainers and rings. | Check price on Amazon |
| 13 | Piston (0.25 mm oversize, with pin) (not illustrated) | 12654417 3.0L driver side 12654418 3.0L passenger side 12654419 3.6L driver side 12654420 3.6L passenger side | V6. Oversize pistons for a rebored block. Use the matching oversize ring kit (14). | Check price on Amazon |
| 14 | Ring kit, piston | 12631194 3.0L standard 12654439 3.0L 0.25 mm oversize 12644928 3.6L standard 12654440 3.6L 0.25 mm oversize | V6. Qty 6 (one kit per piston). | Check price on Amazon |
| 15 | Retainer, piston pin | 12566186 | V6. Part of the piston. | Check price on Amazon |
| 16 | Sensor, crankshaft position | 12615626 | V6 3.0L and 3.6L. Includes bolt and retainer. | Check price on Amazon |
| 17 | Sensor, knock | 12729597 | V6. Qty 2. | Check price on Amazon |
| 18 | Shield, knock sensor (exhaust manifold lower heat shield) | 12593759 | V6. | Check price on Amazon |
| 19 | Plug, oil gallery (cup, 14.22 mm, stainless) | 11562127 | V6. Qty 4 per GM. | Check price on Amazon |
| 20 | Plug, engine block oil gallery (cup, 9.9 mm) | 12667039 | V6. | Check price on Amazon |
| 21 | Plug, engine block oil gallery (M20x1.5x30.5) | 11561751 | V6 and 2.4L. | Check price on Amazon |
| 22 | Plug, engine block core hole (M14x1.5x16) | 11561583 | V6 and 2.4L. Qty 4 per GM. | Check price on Amazon |
| 23 | Plug, engine block core hole (cup, 34.4 mm) | 11569584 | V6. Qty 2. | Check price on Amazon |
| 24 | Pin, cylinder head locating | 12570326 | V6. Qty 4. | Check price on Amazon |
| 25 | Pin, engine front cover & oil pan locating (8x12 mm dowel) | 22531637 | V6 and 2.4L. Qty 2. | Check price on Amazon |
The illustration is an original drawing made for this site. It is not to scale and the shapes are representative.