1990 - 4T60
| Model Code | Engine | Platform | Differential Ratio | Sprocket Ratio | Final Drive Ratio | Converter Code | Convertor Stall Speed |
| AAH, ABH, KDH | Cadillac 4.5 V8 | E/K-Bodies | 3.33 | 37/33 | 2.97 | FM8C | 1825 |
| AFH, KPH | Cadillac 4.5 V8 | Limo | 3.33 | 37/33 | 2.97 | FM8C | 1825 |
| AJH, KHH | Cadillac 4.5 V8 | E/K-Bodies | 3.33 | 35/35 | 3.33 | FM8C | 1825 |
| ANH, ATH, KLH | Cadillac 4.5 V8 | E/K-Bodies | 2.84 | 37/33 | 2.53 | FM8C | 1825 |
| BAH, WDH | Buick 3300 V6 | A-Body | 3.33 | 37/33 | 2.97 | FY9B | 1420 |
| BDH, WFH | Buick 3300 V6 | A-Body | 3.06 | 35/35 | 3.06 | FY9B | 1420 |
| BFH, WHH | Buick 3300 V6 | A-Body | 3.06 | 35/35 | 3.06 | FL9B | 1895 |
| BHH, WMH | Buick 3800 V6 | C/H-Bodies | 2.84 | 35/35 | 2.84 | FY9B | 1420 |
| BJH, WJH | Buick 3800 V6 | H-Body | 3.33 | 37/33 | 2.97 | FL9B | 1895 |
| BPH, WNH | Buick 3800 V6 | E-Body | 2.84 | 35/35 | 2.84 | FL9B | 1895 |
| BWH, WPH | Buick 3800 V6 | E/Z-Bodies | 3.33 | 37/33 | 2.97 | FL9B | 1895 |
| PAH, WXH | Buick 3800 V6 | H-Body | 3.33 | 35/35 | 3.33 | FL9B | 1895 |
| CHH, CJH, LMH, LNH, YDH, YHH, YKH, YLH | 3.1 V6 | W-Body | 3.33 | 35/35 | 3.33 | FJ9B | 2060 |
| LAH, YAH, YRH | 3.1 V6 Turbo | W-Body | 3.33 | 35/35 | 3.33 | FL9B | 1895 |
| YSH, YTH | 3.1 V6 | A-Body | 3.33 | 35/35 | 3.33 | FJ9B | 2060 |