How to service and repair the Flywheel on Cadillac STS?

To service and repair the flex plate, start by removing the transmission. Then remove the Flywheel bolts and the Flywheel itself. Clean and inspect the Flywheel; if any teeth are damaged, inspect the Starter for proper operation and replace it with excess wear or damage to the Starter Drive. When installing, install the engine Flywheel first and then, the transmission.

How to replace the engine flywheel for the 6L50 All Wheel Drive, 6L50 Rear Wheel Drive, or 6L80 on Cadillac STS?

The first step for engine Flywheel replacement involves taking away the transmission component of the 6l50 all wheel drive, 6l50 rear wheel drive, or 6l80 versions. The engine Flywheel bolts must be unscrewed followed by the removal of the Flywheel itself. The Flywheel needs cleaning while checking for damaged teeth which requires Starter inspection to determine whether replacement is necessary due to Starter drive wear or damage. The procedure requires installing the engine Flywheel followed by reinstallation of the transmission for all relevant models.

OEM Cadillac STS Flywheel

Clutch Flywheel

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Cadillac STS Drive Plate Part Number: 12727438
$50.37 MSRP: $86.51
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Product Specifications
- Other Name: Plate, Engine Crankshaft
- Replaces: 12603197, 12721499, 12689004
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2011 Cadillac STS | Base | 6 Cyl 3.6 L GAS
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Cadillac STS Drive Plate Part Number: 12572042
Product Specifications
- Other Name: Plate, Engine Crankshaft
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2007 Cadillac STS | Base | 6 Cyl 3.6 L GAS
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Cadillac STS Drive Plate Part Number: 12582606
Product Specifications
- Other Name: Flywheel, Engine Crankshaft
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2010 Cadillac STS | Base, Platinum, V | 8 Cyl 4.4 L GAS, 8 Cyl 4.6 L GAS

Cadillac STS Flywheel

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Cadillac STS Flywheel Parts and Q&A

Drive Plate
12572042
Q: How to service and repair the Flywheel on Cadillac STS?
A:
To service and repair the flex plate, start by removing the transmission. Then remove the Flywheel bolts and the Flywheel itself. Clean and inspect the Flywheel; if any teeth are damaged, inspect the Starter for proper operation and replace it with excess wear or damage to the Starter Drive. When installing, install the engine Flywheel first and then, the transmission.
Drive Plate
12727438
Q: How to replace the engine flywheel for the 6L50 All Wheel Drive, 6L50 Rear Wheel Drive, or 6L80 on Cadillac STS?
A:
The first step for engine Flywheel replacement involves taking away the transmission component of the 6l50 all wheel drive, 6l50 rear wheel drive, or 6l80 versions. The engine Flywheel bolts must be unscrewed followed by the removal of the Flywheel itself. The Flywheel needs cleaning while checking for damaged teeth which requires Starter inspection to determine whether replacement is necessary due to Starter drive wear or damage. The procedure requires installing the engine Flywheel followed by reinstallation of the transmission for all relevant models.