LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> GMC >> 1982 >> Magnavan Standard Trans >> Repair and Diagnosis >> Electrical >> Body Electrical >> Speed Control Systems - Automatic >> Adjustments >> Transducer
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Speed Control Systems - Automatic: Adjustments: Transducer

  1. Before adjusting transducer, be sure servo adjustment is correct. Check all hoses for proper routing and good condition. Ensure electric and vacuum release switches are properly adjusted.
  2. To adjust transducer, note cruising speed. If it is lower than engagement speed, loosen orifice tube lock nut, and turn tube outward. If cruising speed is high, turn tube inward. Each 1/4" turn will change engagement speed by 1 MPH. Tighten lock nut and check operation.