3.1 L LH0 V6

The LH0 ("T-code") was introduced in 1988 on the Pontiac 6000 STE AWD, featuring more advanced multi-port fuel injection. It was produced until 1994 (1996 for the Mexican market) and was exported in some models. This engine produced 135 hp (101 kW) and 180 lb⋅ft (244 N⋅m) of torque from 1988–1989, then upgraded to 140 hp (104 kW) at 4800 rpm and 185 lb⋅ft (251 N⋅m) of torque at 3600 rpm.