my 2002 Deville overheats

Francisco Olalde

Asked by Mar 12, 2016 at 05:34 AM about the 2002 Cadillac DeVille DTS

Question type: Maintenance & Repair

I have a 2002 Deville, after driving it for more than 30 miles it starts to overheat and leaks the coolant thru the coolant tank. Any idea of what could be wrong?

5 Answers

Tom Demyan

First thing that comes to mind is a failed head gasket, as the Northstar engines have this as a common issue around 100K. Have the engine cylinders pressure tested. It might be as simple as low coolant level, but then you need to find where it is leaking.

Best Answer
George Rivers

That's what I was told. But I was also reading that the reservoir cap could have something to do. But then again you are probably right the car already has over 200k miles

Heather Robertson

Run, run as fast as u can away from that Cadillac. North star engines suck. My old 99 deville had a failed head gasket. We had unfortunately put a lot of money into that car before we came to the conclusion of the bad head gasket. Whatta shame it was such a nice car too. So save your pocket book, let the caddy go.........


Yep sounds like a headgasket to me too, a block check test should confirm or deny that, if it checks good then I would replace the radiator, thermostat and the hoses. But if the block check is positive then you have to decide if it is worth dumping that kind of money into the car. I had a customer that loved her caddie so much that when this happened to her she opted for a crate motor, and is still driving it today, last time I saw it there was well over 300K on the car and no more troubles, not even the tranny has acted up yet but she is a maintence wise person. My two cents worth.

2 out of 2 people think this is helpful.
Francisco Olalde

Yeah, thanks for answering

Your Answer

Add photo

Related Questions


Looking for a Used DeVille in your area?

CarGurus has 2,394 nationwide DeVille listings starting at $1,600.


Search Cadillac DeVille Questions

Cadillac DeVille Experts

#1 kikero
Reputation 1,870
#2 Js08016
Reputation 1,300
#3 Cynthiasmith
Reputation 1,260
View All

Related Models For Sale

Used Cadillac Eldorado"
452 listings starting at $7,995
Used Cadillac CTS"
427 Great Deals out of 13,030 listings starting at $1,000
Used Lincoln Town Car"
55 Great Deals out of 2,377 listings starting at $1,542
Used Chevrolet Impala"
947 Great Deals out of 35,758 listings starting at $700
Used Cadillac Escalade"
373 Great Deals out of 11,230 listings starting at $2,999
Used Mercedes-Benz S-Class"
172 Great Deals out of 6,566 listings starting at $2,500
Used BMW 7 Series"
206 Great Deals out of 5,845 listings starting at $2,995
Used Chevrolet Camaro"
812 Great Deals out of 38,799 listings starting at $2,650