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Had a 2001 with average coolant temp between 196 and 198 on a regular basis. Have now a 2003 with the average coolant temp around 188 to 190. It also seems the heater doesn't put out like the 2001. Any thoughts???
Thank you stock man for the time to respond to my inquiry. Others under C5 discussion indicate that the 2003's do run a little cooler ( around 190) no matter what the conditions. Interesiting- like you others with cars prior to 2003 have all said 196-198. Thanks again- Hasbeen3727
If you have too high of a concentration of antifreeze the heater will not work as well. I ran into this problem with a VW Rabbit Diesel. Changed the AF and the heater stopped working (diesels don't put out much heat anyways) after screwing around with it for a week I took it to the dealer and they drained some coolant and added water and the heater started working again.
Bill
Welcome to the Forum! :thumbs: My '01 runs about 194-198 degrees on the highway. Don't think GM changed the thermostat on later models. The anti-freeze solution/mix mentioned above sounds possible if your cooling system has been serviced recently. Keep an eye on the temps. You're probably fine. Enjoy your ride. :steering: