This would fail to warn a following driver that the vehicle is braking and could lead to a crash.

Exterior Lighting — Brake Lights — Switch

Summary
Vehicle description: Pickup trucks, crew cabs, utility trucks and sport utility vehicles. These vehicles were built with the polarity of the wiring for the zero adjust brake switch reversed from what was specified on the switch drawing. With the reversed polarity, the contacts in the brake switch can wear out prematurely. The brake switch will perform normally until the brake switch contacts wear out, resulting in loss of the brake lamps without any warning to the driver.
Actions
Dealers will replace the brake switch and reverse the wiring.
Documents (6)

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Date Announced
FEB 05, 1999
Vehicles Affected
988,587
GMC Recall #
98065
NHTSA Campaign #
99V025000
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