Try eBay for a cheap factory shop manual. It is in mine.
A wiring diagram, for a 1991 Pontiac Firebird, can be obtained from most General Motors dealerships. The wiring diagram can also be found at most auto-parts stores.
I have a 1991 LeMans, all I had to do was go to Autozone.
Wiring for 91 Pontiac Transport: http://www.auto-olds.ru/PONTIAC%20TRANS%20SPORT%201991.pdf
chiltons manual has wiring diagrams for that
8.1 US quarts
I have a 1990 Pontiac LeMans with a 1.6 Daewoo motor. The firing order is 1-2-4-3
go to oreillys and buy a chilton book for your vehicle wiring diagram is in it
You can find the wiring diagram for a 1991 Suburban at various auto part stores. You can also check in the owner's manual.
Try PAINLESSWIRING.COM. They will help you with the wiring if you have any problem.
You can find the radio wiring diagram for a 1991 Ford Bronco in the vehicle's owner's manual. You can also find it by contacting the radio manufacturer.
Manual: 29 mpg / 38 mpg Automatic: : 27 mpg / 33 mpg
The manual.