Remove the two bolts on top of the headlight. Then lift the headlight slightly until it breaks free, and replace bulb by twisting it counter clockwise
Pontiac Trans Sport was created in 1990.
The horn is under the left head light .
(4.3L) 4.5 quarts oil and filter change.
Sound like you're out of oil.
It's concealed in the roof
185 hp
under the floor mat on the passenger side
On the lower driver side of the radiator!
If an automatic transmission ,broken bands in the tranny.
Wiring for 91 Pontiac Transport: http://www.auto-olds.ru/PONTIAC%20TRANS%20SPORT%201991.pdf
on top of oil filter housing
1-6-5-4-3-2