: P2601 cel

06-06-13, 05:37 PM
I have an 09 CTS with DI engine. Last night my car got a CEL and when I got it checked today and its code P2601. I found other caddy's codes (SRX/STS) and they both call out the Aux Water Pump, but couldn't find anything in CTS thread. Before I change out the aux pump, I'd like to shoot the wiring and make sure its all good/not grounded and also the relay but I've looked at both fuse boxes and the manual and couldn't find a relay or fuse. If anyone can can tell me what/where the pump connects to or which fuse/relay. It would be wonderful, if not I suppose I can just change out the pump and hope the code goes away.

By the way, the car runs fine and in 105 degree temps outside, the car temp remains the same as before the light illuminated.


06-21-13, 04:32 PM
did you ever find a solution to your issue? I'm having the same problem even after a new pump was installed. Thanks.