I have a 88 silverado 1500 everytime i put my cruise on it jerks the truck and also spits and spats any idea thanks

SOURCE: 2004 chev silverado Z71 1500 4wd

That was a good suggestion by Molson. Also, if you have been doing a lot of heavy hauling, have them check the strainer, which could be a problem as well.

SOURCE: vaccum hose diagram for 88 chevy truck

it may not be a vacumn leak from a line,check the throttle shaft for movement,for example,i had a 89 1 ton 350 and my throttle shaft was moving around a lot and in order to keep it from idling high,i had to kick the throttle pedal.But also check the idle air control valve,which is the round sensor on the side of the throttle body.

SOURCE: 2006 chevy silverado 1500 the trucks fell

take it to the dealer if it's waranteed

SOURCE: How to fix 2004 Chevy Silverado 1500 truck that spits and sputters at regular rpm's then when gas applied stops spitting and sputtering. Have replaced plugs, wires, distributer, distributor cap,

Recheck your firing order for basics. If this is in good, a compression test may be necessary. Which enigine do you have?

SOURCE: My 2000 Chevy Silverado 1500 truck in first gear and the shifter moves freely. Any idea on what is wrong?

try the shifter cable