Cadillac Seville / Cadillac Eldorado Forum Discussion, 1995 SLS Coolant and Light problems. in Past Cadillac Vehicle Discussion; So,
Just got this 95 Seville SLS. Drives great....2 miles down the road I smell the strong smell of coolant ...
Just got this 95 Seville SLS. Drives great....2 miles down the road I smell the strong smell of coolant in the cabin and the dash reads check coolant level. Coolant is also reading about 220 degrees.
I am assuming this is the heater core that is causing the problem? It must be because the heat isnt blowing cold. I have read a few discussions. Some say you can replace it by just removing the glove box. Others say you have to remove the dash. Which is it?
I am also having problems with the twilight feature. The dash lights go on and off.
A strong coolant smell is indicative of a leak somewhere. A failed heater core will usually cause fog on the inside of the windshield and/or a wet carpet.
Please study the sticky posts just above this one, the stickys in Engines, Northstar (cooling, fans, gauges) and study the entire Cadillac Technical Archive way up ^^^ in the top black bar. LOTS of cooling system info. Google "cadillac forums seville heater core replacement" or similar format for other questions. It's all in here somewhere.
The Twilight Sentinel may be faulty - switch or light sensor (in the top of the windshield dash vent panel). Use the proper year/model group of instructions in the sticky post "How to pull codes" to enter your car's built-in code reader/memory. Use the link to OBD-1 codes to get to definition lists of the various types of DTCs.