Pontiac Bonneville: 4T65E Transmission Pontiac Bonneville: 4T65E-HD Transmission (Supercharged) Pontiac Bonneville: 4T80E Transmission (4.6L V8) Pontiac BonnevilleTransmission Replacement Cost Estimate Pricing varies by model. To be 100% sure on pricing, have your VIN# handy and use ourGet An Estim...