Heater Help

[Redlegger]

I have a 2002 GCS that has 100K miles. The heater is slow to warm and my fluid levels are fine. Any thoughts ?

Thanks.

[N8SBlaze]

Do you know whether the coolant has ever been replaced? It might be time for a coolant flush and fill and to replace the hoses and thermostat. If your thermostat is stuck open it would take a long time for your engine to warm up.

[Stretch58]

Originally Posted by Redlegger

I have a 2002 GCS that has 100K miles. The heater is slow to warm and my fluid levels are fine. Any thoughts ?

Thanks.

Agree with the coolant change if it has not been done for awhile, combine that with a new thermostat. Mine doing the same again, last time it (the thermo)was not closing all the way. Causes slow warm up.

[HeadlessHorseman1]

Ditto all above... my thermostat stuck in the open position and the engine never warmed up fully. I drained and flushed the system along with a thermostat replacement... problem fixed.