K 3500 Truck 4WD V8-305 5.0L (1985)
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Throttle Valve Cable/Linkage: Adjustments
3L80/3L80-HD (THM 400/475)
Detent Downshift Switch Adjustment
Figure 7A-11 Detent Downshift Switch
1. Preset switch by pressing the plunger as far forward as possible.
2. Press accelerator pedal down to a wide open throttle position and the switch will self adjust.