My 2000 cadillac deville dts overheats, plenty of antifreeze & water, new radiator, new water pump, new thermostat so what's the problem

Asked by Nov 11, 2016 at 05:04 PM about the Cadillac DTS

Question type: Maintenance & Repair

My 2000 cadillac deville dts is overheating could the problem possible be a
water control valve for the heater system?

2 Answers


The car should not overheat whether you use the heater or not. I would check the thermostat, flush the system if you did not. Better yet use a backwash system that power flushes the system out. Also make sure the cooling fans are coming on and that the radiator hoses have not collapsed.

1 of 1 people found this helpful.

If you have a Northstar engine it's going to be the head gasket. They're notorious for failure! Have your mechanic test the cooling system for exhaust gases to confirm. If that's the case you're looking at upwards of $3500 to fix it. Not worth it! The engine and transmission both have to come out from the bottom of the car. There's no other way to do the job! HTH. -Jim

Your Answer

Cadillac DTS Experts

  • #1
  • #2
  • #3
View All

Related Models For Sale

Used Cadillac CTS
273 Great Deals out of 10,300 listings starting at $1,500
Used Cadillac DeVille
1,668 listings starting at $1,988
Used Cadillac STS
34 Great Deals out of 987 listings starting at $2,999
Used Cadillac XTS
109 Great Deals out of 5,255 listings starting at $9,975
Used Cadillac Escalade
219 Great Deals out of 11,038 listings starting at $2,900
Used Lincoln Town Car
38 Great Deals out of 1,784 listings starting at $1,495
Used Chrysler 300
359 Great Deals out of 16,701 listings starting at $1,000
Used BMW 7 Series
156 Great Deals out of 5,988 listings starting at $2,500
Used Mercedes-Benz S-Class
138 Great Deals out of 5,912 listings starting at $2,000
Used Cadillac SRX
372 Great Deals out of 9,248 listings starting at $2,500
Used Chevrolet Impala
579 Great Deals out of 34,582 listings starting at $1,250
Used Dodge Charger
428 Great Deals out of 27,751 listings starting at $1,650
Used Buick LaCrosse
329 Great Deals out of 18,809 listings starting at $1,500
Used Chevrolet Tahoe
630 Great Deals out of 36,905 listings starting at $1,800
Used Cadillac ATS
146 Great Deals out of 7,590 listings starting at $8,900

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.