: CTS Low Coolant



jimscts
11-16-07, 02:06 PM
My 2004 CTS has so kindly let me know that the coolant level was low. I check under the hood and sure enough it is. There are no signs of a leak so I top it off and move on. A few weeks later same thing. Still no sign of a leak so I bring it to the dealer. They find that the fluid is low but find no leaks. A few weeks later, today, same thing. I am concerned about an internal engine gasket leak. Its under warranty and the dealer is going to go through it to find out the deal. Anyone experience the same thing?

jimscts
11-16-07, 02:11 PM
Oops. Wrong forum sorry.

kona san
11-17-07, 12:31 AM
I have the same problem with my 2005 V. The local dealership said it's a common problem.

Anyone have any experience with this?

crispyrx7
11-17-07, 09:22 PM
Common problem? What exactly are they calling the problem? The low coolant is the sympton...not the problem.
A few weeks ago I had to top off the coolant in my '05 V also. 20k on the odo.
TIA
Crispy

OldRoadDawg
11-17-07, 09:36 PM
I have the same problem with my 2005 V. The local dealership said it's a common problem.

Anyone have any experience with this?


Common problem? What exactly are they calling the problem? The low coolant is the sympton...not the problem.
A few weeks ago I had to top off the coolant in my '05 V also. 20k on the odo.
TIA
Crispy
It is a fairly common problem with the 04 & early 05 Vs
Radiator replacement is the fix.

darkman
11-17-07, 09:55 PM
Could be this:

Cooling System - Coolant Leaks From Radiator

Bulletin No.: 05-06-02-005A
Date: November 03, 2005
TECHNICAL
Subject:
Coolant Leak (Replace Radiator (http://www.alldatadiy.com/alldata/AFI~V9705380~C40138~R0~OD~N/0/108596970/110536423/110536424/110536428/34853741/100411974/34856156/34856286))

Models:
2004-2005 Cadillac CTS-V

Built Prior To and Including VIN Breakpoint 50193910
Supercede:
This bulletin is being revised to update the part information with a new part number. Please discard Corporate Bulletin Number 05-06-02-005 (Section 06 - Engine/Propulsion System).
Condition
Some customers may comment on a coolant leak. Upon investigation, the technician may find that the leaks appears to be coming from the lower radiator (http://www.alldatadiy.com/alldata/AFI~V9705380~C40138~R0~OD~N/0/108596970/110536423/110536424/110536428/34853741/100411974/34856156/34856286) tank near the lower hose outlet.
Cause
The cooling system (http://www.alldatadiy.com/alldata/AFI~V9705380~C40138~R0~OD~N/0/108596970/110536423/110536424/110536428/34853741/100411974/34856156) may experience increased internal pressures during sustained high RPMs at elevated operating temperatures. This increased pressure may cause a weakening of the core-to-tank mating surface.
Correction
Replace the radiator (http://www.alldatadiy.com/alldata/AFI~V9705380~C40138~R0~OD~N/0/108596970/110536423/110536424/110536428/34853741/100411974/34856156/34856286) with a redesigned radiator, P/N 19129908.

Bob T
11-18-07, 09:30 PM
I had the same problem, mine ultimately turned out to be the water pump.