Greg Thompson Posted June 4, 2014 Report Share Posted June 4, 2014 My 1997 Deville is leaking coolant from the back passenger side of the engine. Only leaks after I have driven it up to normal operating temperature. I dont have an overheating issue it does sometimes get up to about 220-222 degress but not higher than that, is that to high? Sometimes it is a slow leak and sometimes its gushing out. Any guidance would be appreciated! Thanks! Quote Link to comment Share on other sites More sharing options...
sts03 Posted June 4, 2014 Report Share Posted June 4, 2014 Maybe heater hose or if your surge tank is on the passengers side could be that.can you take a pic. Quote sts03 Link to comment Share on other sites More sharing options...
KHE Posted June 5, 2014 Report Share Posted June 5, 2014 The heater pipes are probably starting to rust through. Quote Kevin '93 Fleetwood Brougham '05 Deville '04 Deville 2013 Silverado Z71 Link to comment Share on other sites More sharing options...
rockfangd Posted June 5, 2014 Report Share Posted June 5, 2014 agreed. there are 2 heater pipes that run across the firewall side of the engine. Quote GM FAN FOREVER Nice, clean, luxury= fine automobile Link to comment Share on other sites More sharing options...
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