Check your fuses and wiring to the control first.
If the cruise control on your 1987 300ZX does not work, you might have an issue with the cruise control fuse or wiring. You could also have a problem with the switch that turns the cruise control on and off.
cruise control does not work on 98 astro van
Cruise will NOT work if the speedometer has a problem
the crusie control band is probly broken
Have you tried pressing the cruise control button on the dash?
cruise control does not work when headlights are on
My 08 GMC Sierra has Active Fuel Management, and it does work while using cruise control.
You probably need to install a new cruise control component.
Does the "cruise" light come on?
90 Percent of cruise control problems caused by defective cruise control release switch located near top of break pedal.
cruise control not working,u need to check the fuses also check the clutch safety switch as this also has to do with cruise control