Transmission will not into drive or reverse

Tiny
TARETHA LACY
  • MEMBER
  • 2006 CADILLAC SRX
  • V6
  • FWD
  • AUTOMATIC
  • 166,425 MILES
Driving car would not go in reverse nor drive. Engine light came on. Tow car to shop. Shop fix driveshaft shifter linkage and transmission mount. Drove car for thirty minutes would not go in drive nor reverse. Shop told me if check engine light comes on need transmission. Engine light did not come on this time. Do I need a transmission?
Monday, April 17th, 2017 AT 8:01 PM

1 Reply

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
It sounds like you are having either a pressure issue or manual valve issue. Basically when you put the vehicle in gear, the shift linkage moves what is called a manual valve and this is what directs the pressure to the correct portion of the transmission to engage that gear.

We need to start with checking for codes even though the light is not on.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

If you have no codes then we need to find out if the shift linkage is still connected. If it is then we need to check pressure and find out if the pressure is correct. I attached the process and it is pretty easy to check, we just need to rent a gauge to do this testing.

Let us know if you have questions but this will determine if we need to go into the transmission or not. Thanks
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Thursday, January 28th, 2021 AT 3:29 PM

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