1987 Pontiac 6000 LE 6 Cyl 2.8L
at 30 &35mph my vehicle starts to jump .at 40 & above no jumping.what is the problem?.
Nissan Technical Advisor 2/18/2011
You have more likely a transmission clutch problem. Transmission rebuilding will likely solve the issue. But check the fluid first and replace as basic, if the problem persists, transmission rebuilding is the only option.