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Model Years Speeds Drive Train Trans Model
Bonneville 1995-97 4 Spd 3.8L 4T60E
Bonneville 1997 4 Spd 3.8L SC 4T65E
Bonneville 1998-05 4 Spd 3.8L, 3.8L SC 4T65E
Bonneville 2004-05 4 Spd 4.6L 4T80E
Bonneville 71-76 3 TH400
Bonneville 72-84 3 TH350
Bonneville 77-86 3 TH200
Bonneville 81-86 4 Spd TH200-4R
Bonneville 87-91 4 TH440-T4
Bonneville 92-97 4 4T60-E
Bonneville 97-Up 4 4T65-E