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A/C Compressor Shaft Seal Leak Detection with J-39400-A

WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Blow compressed air into the following locations for at least 15 seconds:
    • Behind the A/C compressor clutch/pulley
    • In front of the A/C compressor clutch/pulley
  2. Wait 1-2 minutes.
  3. Probe the area in front of the pulley.
  4. Probe the area behind the pulley.
  5. A solid alarm from the detector indicates a leak.
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