This is part of a recen GM service bulletin......
Heck! I always use star washers on grounds!
Ed
This information applies to 1996-2005 passenger cars,
trucks and utilities.
In the past, star washers have been used under most
ground connections. It was believed using a star
washer would improve continuity to ground and prevent
the ground fastener from becoming loose.
GM Engineering has determined that installing a star
washer increases the chance for corrosion and prevents
the terminal from achieving proper torque. On vehicles
being built today, star washers are not being used
under any ground connection.
It is recommend NOT to use a star washer on any ground
connection to the body or chassis of the vehicle.
TIP: Be sure the fastener and terminal are clean and
corrosion free. When removing corrosion, be careful
not to remove the plating from the terminal. And be
sure to torque the fastener to the proper specification.
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