You have a fuse in the left front inside passenger fuse panel, labeled CRUISE. You also have a module located on the left front strut tower.
〉 Answered on Jun 17th, 2014 by Amanda J. Pierce, MBA "AJ", Certified Mechanic, Project Coordinator; Primavera Scheduler at VIGOR Alaska Industrial Shipyard & BizzM3ch Solutions
Thanks for your question concerning your 2002 Chevrolet Impala. The actual fuse for the cruise control in your vehicle is more of an elecfrical fusible link that is located, on the drivers side top of the transmission. This has been, unfortunately a dilemma currently for the later models.
A bad / faulty ground has gone bad in your ignition switch. If you are familiar with checking voltage through a voltmeter, you could check the ORANGE wire at the Ignition Switch at PIN C, on the clear connector. I would highly recommend, if you are not familiar with checking voltage. Please have a certified Mechanic or friend familiar with amperage and voltmeter to do so. Most people do not use them to check, so don't feel left out of the loop :) However ,
When professionally checked as mentioned, if the reading is erratic, it's in dire need of replacement for an ignition switch.
Good luck and hope it helps! Also, thank you for giving us the year make model of your car. Much easier to assist when not in person to actually see the repairs to be made to assist people. Kudos to you for that and best of luck!!!!
〉 Answered on Jun 17th, 2014 by Bethany Harris, Master Mechanic and CEO at Purrrfection Motors, Inc.