Actually I know of the indicator light which you speak Mine has just started to flash compressor not coming on I do believe that it is just low freon. will let you know more when I have mine tested.
There is not a a/c light on a 1991 chevy. Perhaps it's your alternator light? If the compressor is locked up it will more than likely burn your belt off.
Remove it, and install a shorter belt.
For flashing headlights just put a new one in.
You can find a diagram for replacing the air conditioning compressor on your 1994 Chevy 1500 pickup truck in a Chevy service manual. Many auto-parts stores will supply the diagram when you purchase the air conditioning compressor.
check your rotor & pickup coil
Could be a bad ignition switch....
You have a severe misfire. See related questions below.
no
NO it will not.
what is the wheelbase of a 1953 chevy pickup width and length?
Yes they do.
No.
It probably is the compressor that is locked up. If it is ok until the a/c is turned on, the compressor is locked up. If it is just the pulley bearing a special puller is required to remove the pulley and bearing.