GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1998 🢒 Astro - 4WD 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 HVAC Compressor Controls System Check

Step

Action

Normal Result(s)

Abnormal Result(s)*

1
  1. Start the engine.
  2. Move the blower speed selector switch to any position except the OFF position.
  3. Turn the air conditioning (A/C) switch to the ON position.
    • The blower motor runs.
    • The A/C compressor clutch engages.

HVAC Compressor Clutch Does Not Engage

* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.