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Johnny Merder · 03-04-2013, 08:08 AM

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?

03-04-2013, 08:08 AM	#1
Johnny Merder Registered User 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?