Location of ac drip line on my 2006 cts - 2006 Cadillac CTS

Automatic Transmission
The Vehicle Speed Sensor (VSS) is located on the right side of the transmission near the output shaft.

https://www.autozone.com/repairguides/CTS-2006-2007-CTS-V-2005-2007-DTS-2006-2007/Component-Locations/Vehicle-Speed-Sensor/_/P-0996b43f80cb19d3

On the gas pedal assy

Not the problem

Move on to other issues

Need a scan tool to check modules

On this website you find fuse box diagram and description for Cadillac CTS


https://www.carknowledge.info/category/cadillac/cts

Drivers side under air Box (where your air filter is) the worst part of it is fighting the air box back into place !

The CTS does not use and expansion valve it uses a fixed orifice, that is located at the inlet of the AC evaporator core under the hood, the small AC line hooks up to the evaporator inlet tube that contains the fixed orifice.

If you buy one from the dealership you will know what it looks like !
Replacing it , , , it can be located in a few locations but it is usually on the bulkhead under the hood.

Possible condensate from air cooling sys,,, often on rt side of car underneath inboard of firewall..

If you don't know where it is coming from, you have to find that out. Check the location of the spot on the floor, if you don't have a floor, put down a piece of cardboard, locate the drip, then look under the hood for what it is that is leaking. It could be the overflow on the expansion tank, could be your AC condensate line dripping, could be one of those tiny coolant lines that return to the back of the engine, could be the water pump, could be a hole in a hose. I don't know why the pressure check didn't show anything, might be something else. Check it out.

There is an aluminum bolt head on top of what looks like a metal can on the top side of the engine. Its near the fill tube and dipstick - drove me crazy, too!

I have a similar problem with a 2003 cadillac cts. The water drips from the bottom area of the glove compartment. If you would stick your hand under and feel around, there is a removable panel ( two small bolts and one star screw) there , you will fell the sponge on the other side of the panel is wet. I removed this panel and ran the air conditioner and place a large mirror on the floor and shine a flash light up but did not see any water dripping.
The Driver side has a similar panel, I removed that also but saw nothing, not even the canister. But the out side pipes from the AC show the canister leads in the hood under ther driver side.
Any way I looked under the car and found the drain hose. It is located under the driver seat area. I tried fishing a coat hanger through it and it went a long way up. If you look on the side panel where the parking brake is located you will see this hose going to the top of the hood. You will need to depress the parking brake for a better view. I tried the Ac bot no condensation water came throug.
I late found a similiar hose on the passenger side. I tried to push the wire in but did not get too far.
One of these hoses drain the Sun ( moon) roof.
I then took a cap from a silicone tune ( u know the screw on tip that you cut at 45 degrees) That I inserted into the tube under car, then I insert a small funnel into the silicone cap , next with my garden ready and flowing , I force water up through the AC drain hose. Dont do too long, 5 to 7 secs is good. You will see the water come through the other drain hose. It is best to have some onlookers. Note some water might flow up to the moon roof drain and into the car so place some towel on the seat.
That works for me.
Thanks all
and good luck