How to remove and reinstall the flywheel while ensuring proper inspection and positioning in 3.8L V6 engine on 1999 Pontiac Grand Prix?

Remove the transaxle and place a prybar or large screwdriver through a hole in the driveplate to keep the crankshaft from turning, then remove the mounting bolts. Pull straight back on the driveplate to detach it from the crankshaft, inspecting it for cracks and chipped teeth, and replace it if damaged. Reinstall the driveplate, ensuring the staggered holes allow for correct positioning on the crankshaft. Use Locktite on the bolt threads and tighten them to the specified torque in a crisscross pattern before reinstalling the transaxle.

Genuine 1999 Pontiac Grand Prix Flywheel

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1999 Pontiac Grand Prix Flywheel Assembly
Part Number: 12579453
$105.99 MSRP: $164.11
You Save: $58.12 (36%)
Product Specifications
- Other Name: Flywheel Asm; Drive Plate, Flywheel
- Replaces: 10218513, 24576876, 24506847
- Item Weight: 6.20 Pounds
- Item Dimensions: 14.1 x 14.1 x 6.2 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12579453
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 1999 Pontiac Grand Prix Submodels:
- 2 DOOR, 4 DOOR, GT 2 DOOR, GT 4 DOOR, GTP 2 DOOR, GTP 4 DOOR, LE 2 DOOR, LE 4 DOOR, SE 2 DOOR, SE 4 DOOR, STE 4 DOOR | 6 Cyl 2.8L, 6 Cyl 3.1L, 6 Cyl 3.4L
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1999 Pontiac Grand Prix Engine Crankshaft Flywheel
Part Number: 12609155
$53.40 MSRP: $82.19
You Save: $28.79 (36%)
Product Specifications
- Other Name: Flywheel Asm ; Flywheel, Engine Crankshaft; Drive Plate, Flywheel
- Replaces: 24508110, 24505212
- Item Weight: 7.30 Pounds
- Item Dimensions: 14.3 x 14.6 x 0.8 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12609155
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 1999 Pontiac Grand Prix Submodels:
- 2 DOOR, 4 DOOR, GT 2 DOOR, GT 4 DOOR, GT2 4 DOOR, GTP 2 DOOR, GTP 4 DOOR, GXP 4 DOOR, SE 4 DOOR | 6 Cyl 3.8L
View related parts
1999 Pontiac Grand Prix Engine Crankshaft Flywheel
Part Number: 12609154
Product Specifications
- Other Name: Flywheel Asm ; Flywheel, Engine Crankshaft; Drive Plate, Flywheel
- Replaces: 24506809
- Item Weight: 4.30 Pounds
- Item Dimensions: 14.2 x 14.5 x 0.8 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12609154
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 1999 Pontiac Grand Prix Submodels:
- 2 DOOR, 4 DOOR, GT 2 DOOR, GT 4 DOOR, GT2 4 DOOR, GTP 2 DOOR, GTP 4 DOOR, GXP 4 DOOR, SE 4 DOOR | 6 Cyl 3.8L

1999 Pontiac Grand Prix Flywheel

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1999 Pontiac Grand Prix Flywheel Parts Questions & Experts Answers

Q:
How to remove and reinstall the flywheel while ensuring proper inspection and positioning in 3.8L V6 engine on 1999 Pontiac Grand Prix?
Posted by Thrisa M.
A:
Remove the transaxle and place a prybar or large screwdriver through a hole in the driveplate to keep the crankshaft from turning, then remove the mounting bolts. Pull straight back on the driveplate to detach it from the crankshaft, inspecting it for cracks and chipped teeth, and replace it if damaged. Reinstall the driveplate, ensuring the staggered holes allow for correct positioning on the crankshaft. Use Locktite on the bolt threads and tighten them to the specified torque in a crisscross pattern before reinstalling the transaxle.
Answered by GM Parts Specialist Jose / Jul 16, 2023