Fractures of the upper steering column shaft couplingbolt result in a lack of coupling load on the shaft and loss of steeringcontrol.

Steering — Steering Wheel/Handle Bar

Date Announced
FEB 14, 1992
Vehicles Affected
20,000
NHTSA Campaign #
92V015000
Summary
The zinc plating operation performed on the upper steering column shaft coupling bolt caused hydrogen embrittlement and breakage of the bolt.
Actions
Replace the zinc plated bolt with a phosphate plated bolt.
Documents (1)