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Q:

speedmetor on 1991 Pontiac Bonneville

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
my speedmetor cable is not reading is it a cable or something in the computer ?
(1) Answer
Sounds like the speedometer head has failed http://www.parts.com/oemcatalog/index.cfm?action=getJointLocator&siteid=2 about $130 at parts.com