Had relay switch for heater replaced last year. only use heater in winter time as it is usually warn here in spring and summer. lately i've seen vapor coming from vents when heater is cut off. windows have fogged up, seen water/liquid leak slowly in passenger floorboard. truck ran hot once last week, but after i pulled over and let it cool down 20 min, temp went back to normal. monitored and added antifreeze to vehicle and vehicle runs in normal temperature range. currently saving money to have core replaced, but truck is my only vehicle. worried about engine going out by prolonging repair. any advice? only been seeing vapor from vents for about a week.
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2004 Chevrolet Silverado 1500 Question: heater core in vehicle bad will it damage vehicle by not replacing
Answer #1pushrod March 25, 2013, 14:28Master
Bypass the core by hooking the heater hoses together with an adpter at NAPA. Wont hurt a thing, jus NO heat! If ac works that is a great defoger in a rain storm, set to defrost.
Replydemon74, March 25, 2013, 15:07Rookie
thanks for the info, i'll have to look into that.
bypass heater core by connecting both heater hoses together under hood.i see this all the time and will not cause any issues