Why is shift from 1 - 2 so hard
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1985 GMC Jimmy - Does not shift well from 1st to second. Once warmed up, if I accelerate slow it will sometimes shift on it's own, but otherwise I have to take my foot off the accelerator at about 20 - 25 MPH to get a smooth shift.
Dose it shift hard all the time or just some of the time ? if it is what i think it is you will need to have the valve seals in the trans replaced .AKA ( Overhall) When thay get some miles on them (100.000) or so the seals get hard and the trans has to build up more pressure then normal to push the vales that make the trans shift , and some times this caulas a delay in shift responce so it shifts hard . if you dont have the money go to your local Autoparts store and get or ask for some trans Fix and put it in it will sofen the seals so it will shift easer and not so hard . Hope this Helps .