One of those A/C things

One of the problems every shop faces – because customers don’t realize what’s normal and what isn’t – is how a system works. When the 2001 model year small GM SUVs were introduced (Chevy Blazer S-10, GMC Jimmy and Olds Bravada), a rear A/C system was
an option.


Although probably not a “high-take-rate”item, it did come with one operating characteristic that could go years (particularly if now with a second owner) that never got noticed. So if the system now requires service, this “fault” might be cited: the rear
A/C periodically cuts out.

If you test it, you’ll find it only cuts out when the system also is put into defrost,
which occurs by design, to ensure plenty of cool, dry air for the windshield.

If you’re a service professional and not a MACS member yet, you should be! Become a member and receive a technical newsletter with information like what you’ve just read in this blog post visit for more information.

You can E-mail us at . To locate a Mobile Air Conditioning Society member repair shop in your area. Click here to find out more about your car’s mobile A/C and engine cooling system.

Mobile A/C professionals should plan to attend 35th annual Mobile Air Conditioning Society (MACS) Worldwide Training Conference and Trade Show, Meet me at MACS Make Connections that Matter, February 5-7, 2015 at the Caribe Royale, Orlando, FL.


About macsworldwide

Mobile Air Conditioning Society (MACS) Worldwide Founded in 1981, MACS is the leading non-profit trade association for the mobile air conditioning, heating and engine cooling system segment of the automotive aftermarket. Since 1991, MACS has assisted more than 600,000 technicians to comply with the 1990 U.S. EPA Clean Air Act requirements for certification in refrigerant recovery and recycling to protect the environment. The Mobile Air Conditioning Society (MACS) Worldwide’s mission is clear and focused--as the recognized global authority on mobile air conditioning and heat transfer industry issues.
This entry was posted in Automotive Aftermarket, Automotive training, Electrical/Electronic, Mobile Air Conditioning, Refrigerants, Uncategorized and tagged , , , , , , , , . Bookmark the permalink.

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