Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSPONTIAC1987BONNEVILLE V6-231 3.8LPARTS AND LABORTRANSMISSION AND DRIVETRAINAUTOMATIC TRANSMISSION/TRANSAXLEDRIVE CHAINPARTS INFORMATION
1987 Pontiac Bonneville V6-231 3.8L
Parts Information
1987 Pontiac Bonneville V6-231 3.8LSECTION Parts Information
| Part | Manufacturer | OEM Part # | Price | Notes |
| Drive Link Assembly | ||||
| THM440-T4 & HM4T60 | GMO | 24218281 | 150.71 | Contact Dealer for most current part and price information. |
| Socket, With Sleeve | ||||
| THM440-T4 & HM4T60 | ||||
| 33 Teeth | GMO | 8668110 | 38.00 | |
| 35 Teeth | GMO | 8675036 | 132.26 | Contact Dealer for most current part and price information. |
| Sprocket | ||||
| THM440-T4 & HM4T60 | ||||
| Without 2.84 Ratio | GMO | 8644679 | 133.02 | |
| With 2.84 Ratio | GMO | 8644677 | 133.16 | |
| Support | ||||
| THM440-T4 & HM4T60 | GMO | 24212471 | 159.54 |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.