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John, Buick Master Technician
Category: Buick
Satisfied Customers: 9176
Experience:  ASE A1-A8 w/L1 GM master technician.Factory certified with 40 years experience.
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1997 Buick Lesabre - speedometer not working and cruise control

Resolved Question:

1997 Buick Lesabre - speedometer not working and cruise control works intermitantly. Can I fix it myself?
Submitted: 8 years ago.
Category: Buick
Expert:  John replied 8 years ago.

Hello pbisaccs,

You will need to find out if it is a faulty vehicle speed sensor,cruise control module ,&or speedometer in the instrument panel cluster.A scan tool can help you with this diagnosis.It will show you vehicle speed that the PCM(powertrain control module--eng/trans computer) is reading.Next it will show cruise input controls to cruise servo.If all these look good you could have a faulty speedometer & cruise control servo or turn signal lever (which have the cruise input switches on it).

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