It does not matter on that year, just make sure that it is POWER STEERING FLUID.
All the speakers in a 1991 Chevy Silverado should be 4x6 if they are stock.
3200
85 mph.
check the shift linkage from the dogleg to the transfer case.the bolt on the linkage may have come out causeing it not to lock it
YES it is.
Generally, a stock silverado will have four speakers; two in the dashboard and two behind the seat.
1157 1157
In the gas tank.
It is inside of the fuel tank.
.035 gap standard and stock
Was built for R12, can be converted to R134a.