Pinhole leak in radiator overflow tank

Asked by JohnTheilen Jun 16, 2017 at 12:19 PM about the 1997 Cadillac DeVille Concours Sedan FWD

Question type: Maintenance & Repair

I own a 1997 Cadillac DeVille Concours.  
The radiator overflow tank has a pin
hole in the top of the tank.  Starts
leaking once the engine is on and the
coolant is pressurized.  Is there a
product available to repair this tiny
leak?

1 Answer

F_O_R answered 6 years ago

Try patching the hole with some silicone sealant temporarily but you need to buy a new one.

Mark helpful

Your Answer:

Related Questions

  • Pinhole leak in radiator overflow tank 1 Answer

    I own a 1997 Cadillac DeVille Concours. The radiator overflow tank has a pin hole in the top of the tank. Starts leaking once the engine is on and the coolant is pressurized. Is there a produc...

    1997 Cadillac DeVille Concours Sedan FWD

    -

    Maintenance & Repair

  • How to add coolant to radiator when recovery tank may be defective? 1 Answer

    2004 Cadillac Deville 4.6 Liter V8. DIC says "Check Coolant Level". There is no heat from the cabin heater. All prior suggestions imply Coolant Level Sensor is defective. My coolant reservoir is ful...

    2004 Cadillac DeVille Sedan FWD

    -

    Maintenance & Repair

  • Why is car coolant pouring out of the overflow tube? 2 Answers

    I have a 1999 Cadillac Deville. Two weeks ago, the car was losing coolant on the passenger side towards the front of the car. It was on the radiator and the air deflector. The mechanic said it wa...

    1999 Cadillac DeVille Sedan FWD

    -

    Maintenance & Repair

  • Standard or Xtra capacity radiator replacement 4 Answers

    I just bought a car from someone.Head gasket leak is a maybe.I was told the radiator was bad.I pulled the old,which was already partially disconnected.Thete is no oil cooler connections ,but the ...

    2002 Cadillac DeVille DHS Sedan FWD

    -

    Maintenance & Repair

  • Cadillac radiator leak 5 Answers

    If my Cadillac has a hole on the back radiator can I weld it in or I have replace the part ?

    1999 Cadillac DeVille Concours Sedan FWD

    -

    Maintenance & Repair

Own this car?

Share your experience with others.

1997 Cadillac DeVille

Write a car review

Review another car

Shortcuts

Search Cadillac DeVille Questions

CarGurus Experts

  • #1
    james sparrow
    Reputation
    4,060
  • #2
    tuff4x4
    Reputation
    3,080
  • #3
    Cynthiasmith
    Reputation
    2,840
View All

Know more, shop wisely

Search

Related Models For Sale

Used Cadillac Eldorado
149 listings starting at $9,800
Used Cadillac Seville
46 listings
Used Cadillac Fleetwood
35 listings
Used Lincoln Town Car
15 Great Deals out of 400 listings starting at $500
Used Chevrolet Impala
284 Great Deals out of 4,064 listings starting at $500
Used Chevrolet Corvette
704 Great Deals out of 12,302 listings starting at $4,995
Used Lincoln Continental
30 Great Deals out of 625 listings starting at $9,660
Used Chevrolet Camaro
596 Great Deals out of 9,267 listings starting at $4,899
Used Ford Mustang
930 Great Deals out of 22,662 listings starting at $1,100

Used Cars for Sale

2005 Cadillac DeVille For Sale
3 Great Deals out of 31 listings starting at $3,250
2004 Cadillac DeVille For Sale
18 listings
2003 Cadillac DeVille For Sale
4 Great Deals out of 38 listings starting at $1,925
2002 Cadillac DeVille For Sale
30 listings
2001 Cadillac DeVille For Sale
18 listings

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. Content will be removed if CarGurus becomes aware that it violates our policies.