SIR Service Precautions
WARNING: If a service procedure indicates that a module is to be
replaced, a new
production unit MUST be ordered from the GM Parts Catalog or certified
supplier. Using a module that has been reset by a 3rd party company is strictly
prohibited. Not using a new production unit
WHEEL DRIVE SHAFTS DESCRIPTION AND OPERATION
Wheel drive shafts are flexible assemblies consisting of an inner joint and
an outer constant velocity joint connected
by an axle shaft. The inner joint is completely flexible, and can plunge in and
out. The outer joint is also flexible, but
cannot plun