Engine Firing Orders: 1991

Pontiac	6000	2.5 liter L4
Pontiac	6000	3.1 liter DOHC V-6 VIN "T" VIN "T"
Pontiac	Bonneville	3.8 liter V-6
Pontiac	Firebird	3.1 liter V-6
Pontiac	Firebird	5.0 liter V-8 VIN "E"
Pontiac	Firebird	5.0 liter V-8 VIN "F"
Pontiac	Firebird	5.7 liter V-8
Pontiac	Grand AM	2.3 liter SOHC L4 Quad 4
Pontiac	Grand AM	2.5 liter L4
Pontiac	Grand Prix	2.3 liter SOHC L4 Quad 4
Pontiac	Grand Prix	3.1 liter DOHC V-6 VIN "T"
Pontiac	Grand Prix	3.4 liter DOHC V-6
Pontiac	J2000/Sunbird	2.0 liter L4 VIN "K"
Pontiac	J2000/Sunbird	3.1 liter V-6
Pontiac	Lemans FWD	2.0 liter L4 VIN "K"
Pontiac	Lemans FWD	1.6 liter L4 VIN "6"

Pontiac Truck

Trans Sport

3.1 liter V-6 VIN "D"

Additional Information provided courtesy of AllData