How to remove and reinstall the flywheel in 3.4L V6 engine on GMC Terrain?

To remove the transaxle, first raise the vehicle and securely support it on jackstands. Next, take out the bolts that secure the driveplate to the crankshaft, noting that most driveplates have locating dowels; if not, make marks for proper alignment during reassembly. If the crankshaft turns, use a screwdriver to prevent it from moving while removing the mounting bolts. When removing the driveplate, wear gloves to protect your fingers from sharp edges. Clean the driveplate to remove grease and oil, inspecting it for cracks and checking for any damaged ring gear teeth, and lay it on a flat surface to check for warpage. Clean and inspect the mating surfaces of the driveplate and crankshaft, replacing the crankshaft rear seal if it is leaking before reinstalling the driveplate. Position the driveplate against the crankshaft, aligning the marks made during removal, and ensure correct installation using any alignment dowels or staggered bolt holes present. Apply thread locking compound to the bolt threads and place the retaining ring on the driveplate before tightening the bolts to the specified torque, using a screwdriver to prevent the driveplate from turning. If the front pump seal or O-ring is leaking, replace it at this time. The remainder of the installation follows the reverse order of removal.

Genuine GMC Terrain Flywheel

Clutch Flywheel

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GMC Terrain Automatic Transmission Flexible Plate Assembly
Part Number: 12647333
$130.49 MSRP: $215.96
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Product Specifications
- Other Name: Plate Assembly, Automatic Transmission Flexible ; Plate, Engine Crankshaft; Disc, Drive Plate
- Replaces: 09126397, 12593689, 9126397
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2017 GMC Terrain | SLE1 SUV, SLE2 SUV, SLT SUV | 4 Cyl 2.4L
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Product Specifications
- Other Name: Plate Assembly, Automatic Transmission Flexible ; Plate, Engine Crankshaft; Drive Plate
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2017 GMC Terrain | SLE2 SUV, SLT SUV | 6 Cyl 3.0L, 6 Cyl 3.6L
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GMC Terrain Plate Assembly, A/Trns Flex
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- Other Name: Drive Plate
- Replaces: 12647930, 12664939
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2020 GMC Terrain | 4 DOOR SLE2, 4 DOOR SLT1, 4 DOOR SLT2 | 4 Cyl 2.0L
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Product Specifications
- Other Name: Plate Assembly, A/Trns Flex; Drive Plate
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
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Product Specifications
- Other Name: PLATE, Engine Crankshaft; Drive Plate
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2024 GMC Terrain | 4 DOOR SLE2, 4 DOOR SLE2 , 4 DOOR SLT1, 4 DOOR SLT1 , 4 DOOR SLT2 | 4 Cyl 1.5L
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GMC Terrain Plate Assembly, Automatic Transmission Flexible
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- Other Name: PLATE, Engine Crankshaft; Drive Plate
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Fits the following Vehicles:
- 2018-2019 GMC Terrain | 4 DOOR SLE2, 4 DOOR SLT1 | 4 Cyl 1.6L Diesel

GMC Terrain Flywheel

The GMC Terrain Flywheel helps to smooth out engine power by storing rotational energy. It engages the starter during engine ignition and provides the clutch with its surface for friction. Bolted to the crankshaft, this Flywheel revolves whenever the motor is running, with its mass converting the pulsing explosions in the cylinders to constant motion that the driver feels through the pedals. In the Terrain range, two primary Flywheel styles have been applied: the traditional solid disc and the dual mass Flywheel that has a spring damped section between the primary and secondary masses to absorb excess vibration. While the solid may be resurfaced if clutch heat leaves grooves or warpage, the dual mass type usually has to be replaced if the springs are loose or if its face is worn because machining could disrupt the sensitive damper gap. Ring gear teeth pressed around the Flywheel rim can also wear, resulting in grinding starts, and severe damage may require a complete unit swap, although on many models the gear alone can be heated off and renewed. Later GMC revisions maintained clutch dimensions to ensure that a new unit would mate seamlessly with existing pressure plates so that every Terrain driver enjoys smooth launches. Overall, when selecting a new GMC component when the wear becomes excessive, it maintains quiet starts and stable power delivery.

Each OEM GMC Terrain Flywheel 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 Terrain Flywheel Parts Questions & Experts Answers

Automatic Transmission Flexible Plate Assembly
12597026
Q: How to remove and reinstall the flywheel in 3.4L V6 engine on GMC Terrain?
A:
To remove the transaxle, first raise the vehicle and securely support it on jackstands. Next, take out the bolts that secure the driveplate to the crankshaft, noting that most driveplates have locating dowels; if not, make marks for proper alignment during reassembly. If the crankshaft turns, use a screwdriver to prevent it from moving while removing the mounting bolts. When removing the driveplate, wear gloves to protect your fingers from sharp edges. Clean the driveplate to remove grease and oil, inspecting it for cracks and checking for any damaged ring gear teeth, and lay it on a flat surface to check for warpage. Clean and inspect the mating surfaces of the driveplate and crankshaft, replacing the crankshaft rear seal if it is leaking before reinstalling the driveplate. Position the driveplate against the crankshaft, aligning the marks made during removal, and ensure correct installation using any alignment dowels or staggered bolt holes present. Apply thread locking compound to the bolt threads and place the retaining ring on the driveplate before tightening the bolts to the specified torque, using a screwdriver to prevent the driveplate from turning. If the front pump seal or O-ring is leaking, replace it at this time. The remainder of the installation follows the reverse order of removal.