Ok...i have a 1991 gmc sonoma sle with a 4.3 engine. I think there is a problem w/ my transmission. First off when you step on the gas and nail it to the floor the engine sounds as if it were going to keep going but it just sits there at the same speed, like its not getting into the next gear. the trans dipstick is reading that its low on fluid. the first into second gear shift is kind of jerky....like it hits hard into second. I dont know what else to describe about it but please help me.
Try having a service done.