Cadillac CTS First Generation Forum - 2003 - 2007 Discussion, Coolant issue! Leaking from back of motor, top of transmission. in Cadillac CTS Coupe, Sport Sedan and Sport Wagon Forums; This leak has me stumped. It is leaking from what looks to be a capped fitting on top of the ...
- 06-23-13 01:56 PM #1Cadillac Owners Member
- Automobile(s): 02 cts
- Join Date
- Jun 2013
Coolant issue! Leaking from back of motor, top of transmission.
This leak has me stumped. It is leaking from what looks to be a capped fitting on top of the transmission. When I pour water into the overflow tank, it immediately leaks out of the capped spot on the transmission. I followed all hoses and none go to this spot. I had to take the intake off to find the leak, it looks like there is a metal cap on top which has dislodged enough to let water leak out, I can stick a screwdriver back in there and move the cap round and round on the fitting. It is about the size of the tip of a pinkie finger. Anybody know what that is and how to fix it?
- 06-23-13 02:59 PM #2
- 06-23-13 03:16 PM #3
Re: Coolant issue! Leaking from back of motor, top of transmission.
Nope, not the oil cooler. That is on top of the engine, this leak is from the top of the transmission area, behind the engine.
- 06-23-13 07:23 PM #4
Have you put in a uv dye at all? If you haven't try that and get a uv flashlight, make sure the dye is dex-cool friendly. Not all dyes are.
- 07-29-13 02:01 PM #5Cadillac Owners Member
- Automobile(s): cts
- Join Date
- May 2013
Guys I need help with my 03 3.2v6... Ok the check engine light came on one day then all of sudden I started going through 50/50 coolant...there's always a little puddle from the overflow tank on the drivers side. Seems like when the ac is on... There no problem. Fans seem to be working. So today I swapped out the coolant temperature sensor and the crankshaft position sensor (another story)... Check engine Light went off but ac wasn't blowing cold air and when I parked and cut the ac off... Coolant boiled over again!! No obvious leaks from anywhere else. I'm going to change the radiator cap today to see if that helps! Any suggestions?? Sorry if this is a repeat.
- 08-02-13 04:43 AM #6