1997 Buick Century Owner's Manual - Page 115

Resuming aSet Speed Suppose you set your cruise control at a desired speed and then you apply the brake. This, of course, shuts off the cruise control.But you don't need to reset it. Once you're going about 25 mph (40 km/h) or more, you can move the cruise control switch from ON to R/A (Resume/Accelerate) for abouthalf a second. You'll go right back up to your chosen speed and stay there. Increasing Speed While Using Cruise Control There are two ways to go to a higher speed: Use the accelerator pedal to get to the higher speed, Push in the SETKOAST button, then release the button and the accelerator pedal. You'll now cruise at the higher speed. Move the cruise switch from ON to R/A. Hold it there until you get up to the speed you want, and then release the switch. (To increase your speed in very small amounts, move the switch to R/A for less than half a second and then release it. Each time you do this, your vehicle will go about 1 mph ( 1.6 kmk) faster.) The accelerate featurewill only work after you set the cruise control speed by pushing the SETKOAST button. 2-39