| [GMCnet] Winterizing your GMC [message #232736] |
Mon, 09 December 2013 15:55  |
Emery Stora
Messages: 959
Registered: January 2011
Karma:
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Senior Member |
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We have had several email lately about the use of RV antifreeze to winterize our motorhomes.
I just noticed that GM issued a Service Bulletin 73-IM-6 Group 24-MI6-4 dated 12/14/73.
This bulletin instructs dealers to tell their customers to winterize by using RV antifreeze. They say to pour 5 gallons into the fresh water tank and pump it through all the lines. Then pour a small amount into the traps.
Since that time the water tank to pump bypass was developed to allow one to not put antifreeze into the water tank but simply pump from a 1 galloon jug into the lines. This saves 4 gallons. 1 gallon is enough to use for the lines and the traps.
I have the Dealer Service and Recall manual that I purchased from GM back in 1981 when I bought my 77 Kingsley. If anyone needs information from it let me know.
Emery Stora
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