Cruise Contol Components

MIDLIFE49

MEMBER
1999 PONTIAC GRAND PRIX
6 CYL
2WD
AUTOMATIC
90,000 MILES

1999 pontiac grand prix cruise control won't operate after changing multifunction switch.

Tuesday, November 30th, 2010 AT 7:47 PM

5 Replies

WRENCHTECH

MECHANIC
20,761 POSTS

You probably messed up something in the wiring harness and it's not plugged in properly.

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Tuesday, November 30th, 2010 AT 7:57 PM

MIDLIFE49

MEMBER
3 POSTS

I replaced the multifunction switch because the cruise control quit. The very same problem exists after I changed the switch. Are there other possibilities in the cruise control system?

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Tuesday, November 30th, 2010 AT 9:35 PM

WRENCHTECH

MECHANIC
20,761 POSTS

Of course, there are dozens of other possibilities. It needs to be diagnosed properly

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Tuesday, November 30th, 2010 AT 9:38 PM

MIDLIFE49

MEMBER
3 POSTS

Outside of the multifunction switch, brake pedal switch, and cruise control module. Are there any other physical components. The local service provider identified the problem at the multifunction switch. I have removed that possibility. Same problem still exists.

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Tuesday, November 30th, 2010 AT 10:46 PM

WRENCHTECH

MECHANIC
20,761 POSTS

Those plus the PCM and all the wiring and power supplies in between. The common mistake these days is assuming everything can be fixed by changing parts. That's not always the issue.