Where are the speed sensor locations on a 2006 Saturn vue? We replaced one on the transmission but were told there is another.

The 1-2 shift solenoid valve on a Saturn Vue 3.6 is typically located in the transmission. The exact location of the solenoid valve can vary depending on the year and model of the vehicle, but it is commonly found inside the transmission's valve body. The valve body is the area of the transmission that houses the shift valves and controls the flow of transmission fluid to control the gear shifts.
It's important to note that accessing and replacing a shift solenoid valve on a transmission can be a difficult and complex task that requires special tools and knowledge. It is not recommended to attempt this repair unless you have experience working on transmissions and have the proper tools and equipment. It's also important to consult the Saturn Vue 3.6 service manual or a professional mechanic or transmission specialist to have the proper steps and safety procedures to follow.

Transmission Control Module (TCM) (MN5)
In the passenger compartment, under the left side of the I/P

on automatic inside trans pan need to remove trans pan to get to it ---on a manual trans no filter the following link shows how to fill trans
Transmission Fluid Replacement 2002 2007 Saturn Vue

2006 2007 Saturn Vue Hybrid starter replacement

So does the Trip odometer work? Does the odometer work? If you answer is "sort of", does the odometer return to the same mileage every time your 2003 Saturn VUE sits overnight? The VUE has an all electronic odometer sensor that is in the transmission, so you may need to replace that. I also agree with JDCamped that those wires may need replaced, but the mice? I would think burned/shorted in a wiring harnes is far more common and you should see a "Check Engine" light. The cluster just shows the data from the sensors, if they are blank, then that is the cluster.

In the transmission,

If your check engine light is on use DB2 monitor to check code, replace sensor indicated. Check fuel filter if more than 30,000 miles, Could be ignition problem or weak fuel pump

2006 Saturn VUE AWD, same issue - only it was very intermittant and happened at very slow braking (like rolling to a stop sign) when it kicked in. Turned out it too was the wheel speed sensor. Although I had to take it to the dealership 2x, the first time they checked engine codes with no avail, and a visual inspection didn't show anything either. It was only when I happened to take it there on a day that it was happening frequently. They actually had to hook up the diagnostic computer, drive around, and get readings from the speed sensor to confirm it was shot.

Replace the transmission and sell it...These vues 2003 and 2004 with the varitrack trannies were junk you may be eligible for a class action lawsuit if you live in a state where they have filled it.

you should visit another dealer. that is not normal. the Saturn Vue is a very well made car and i could see these problems if it had 150,000 miles.