Where is the 1 cylinder on a 1991 gm Sonoma?

on a 4 cylinder model it is the cylinder closest to the Fan Shroud or FRONT of the vehicle if it's a 2.8 it starts at the front left if you are looking a the engine from the front of the vehicle... which is number 1... front right is 2 1 3 5 FAN 2 4 6 if it's a 4.3 the front right is number 1 2 4 6 Fan 1 3 5 the firing order is clockwise on the distrubuter Hope this helps