the other one is the backup lamps switch.
for the clutch start switch, Are they yellow and purple?
if so yellow goes to ignition switch and purple goes to the 5 amp crank fuze on the fuze box.
Not sure how the 4l60e auto was wired up for the park/neutral safety switch.







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O2 GMC RCSB 4.8L V8 AUTO 3.73's


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