For 1990-2009 cars

# All General Motors Passenger Cars, Trucks and Utilities Use of Star Washer on a Body or Chassis Ground - kw wire connector terminal starwasher star washer

Subject: | All General Motors Passenger Cars, Trucks and Utilities Use of a Star Washer on a Body Or Chassis Ground

Models: | .

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in the PI.

### Condition/Concern:

Use of a star washer under a ground wire connection. In the past, it has been known to use star washers under most ground connections. It was believed using a star washer would improve continuity to ground and prevent the ground fastener from becoming loose. With vehicles built today, star washers are not being used under any ground connection. It has been proven by GM engineering that with a star washer installed, it will increase the chance for corrosion and prevent the terminal from achieving proper torque.

### Recommendation/Instructions:

It is recommend NOT to use a star washer on any ground connection to the body or chassis of the vehicle.

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Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.

### Models:

(96 - 05 All General Motors Passenger Cars) and (96 - 05 All General Motors Mid-Sized and Full-Size Pick Up) and (96 - 05 All General Motors Mid-Sized and Full Sized Utilities)

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