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dagwood · 05-17-2008, 06:56 AM

What else does my PCM control other than the engine and trans? When I took it in for a HVAC noise, the tech said there was a software update to stop it. Does the PCM control the HVAC too?

Brad

05-17-2008, 06:56 AM	#26
dagwood Registered User Status: Offline Join Date: Jun 2006 Member ID: 49873 Pics: My Gallery Location: OH Posts: 6	Re: Possible Diesel Combo In 1500 What else does my PCM control other than the engine and trans? When I took it in for a HVAC noise, the tech said there was a software update to stop it. Does the PCM control the HVAC too? Brad