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Old 03-04-2013, 08:08 AM   #1
Johnny Merder
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Join Date: Jun 2011
Location: Jasper, In
Posts: 109
Missing Coolant?????????

I have a 2005 GMC crew cab 2wd with 5.3, coolant is being consumed about a quart a week. i have checked all the usaual deals, no visible exteriaor leak, no smoke or smell from exhaust, no wet passenger floor. I did pressure test system and it wouldnt hold pressure, it went from 15psi down to 5psi in 20 min. Any ideas?
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