1999 Cadillac SLS overheating

1999 CADILLAC SLS
115,000 MILES • V8 • FWD • AUTOMATIC
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LARRYDAK
  • MEMBER
  • 6 POSTS
replaced rad due to cranked tank. flushed system now it over heats did not do this before
Mar 31, 2009 at 9:37 AM
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FACTORYJACK
  • CAR REPAIR CONTRIBUTOR
  • 4,159 POSTS
Are both the upper and lower radiator hoses hot to the touch at or near overheat? It could be a stuck closed thermostat. Quite possibly it could have blown head gaskets, this may explain the excessive pressure to crack a side tank. Determine if you have coolant flowing, both hoses hot to touch as mentioned earlier, then have it tested for combustion gases in the cooling system.
Apr 1, 2009 at 12:54 AM
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