1973 Chevrolet Nova Base, 2D Hatchback, 5.7L Eng VIN L, Standard Trans, Trans Mfr CD SaginawFACTORY OEM SERVICE PROCEDURE

Output Shaft (Door Operating Arm)

Remove vacuum valve (see above). Remove vacuum motor retaining screws, free power spring and position vacuum motor mechanism to disengage output shaft operating arm. Identify all connections and disconnect two vacuum hoses and two electrical wires at transducer. Remove three retaining screws and two retaining clips and lift output shaft out. Install output shaft by reversing removal procedure.

Fig 1: Programmer Output Shaft Removal
G09312050Courtesy of GENERAL MOTORS COMPANY
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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