93 gmc will barley go past 40

Asked by Nov 22, 2016 at 04:15 PM

Question type: Maintenance & Repair

Hey, i have a 93 gmc sierra with 256 k on
it. And it has started to where when you
drive it and go past about 40-45 you wont
be able to hold a speed and the rpms will
jump upto 2 grand and 2500 and then shift
back down and sometimes when im
around 55 or so itll jump upto 4,000 . And i
also wanted to see when i go to stop my
pedal will slowely go do the floor like its
kinda got air or something in it

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