Transmission not working properly

2003 CADILLAC CTS
162,000 MILES • 6 CYL
Avatar
DUANE HALLENBACK
  • MEMBER
  • 2 POSTS
I was driving and came to a stop and transmission had no more gears just went limp .
Feb 6, 2022 at 12:55 PM
Advertisement
Avatar
JACOBANDNICKOLAS
  • CERTIFIED EXPERT
  • 110,175 POSTS
Hi,

When you say it went into limp, were you still able to drive it at a regulated speed or do you mean the vehicle went into neutral ("No more gears") and nothing worked?

Do you have a scan tool? In this case, the best thing to start with would be a can-scan. CAN stands for controller area network. Basically, the different computers/modules are tied together via a few wires. This will receive codes regardless of the module storing them. Here is a link that shows how it's done:

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

Also, have you checked the fluid level and condition?

https://www.2carpros.com/articles/how-to-check-and-add-transmission-fluid

Let me know.

Joe
Feb 6, 2022 at 8:48 PM
Avatar
DUANE HALLENBACK
  • MEMBER
  • 2 POSTS
Joe, I put on scan tool I have 2 oxygen sensor codes nothing for transmission. On radio scene 2 codes are: 25752111 9093
Msm25739645. 1676.
Feb 9, 2022 at 4:56 PM
Advertisement
Avatar
JACOBANDNICKOLAS
  • CERTIFIED EXPERT
  • 110,175 POSTS
Hi,

The codes you have are indicators that the PCM has stored codes. You should be able to further investigate that. Are you able to scroll through the screen and locate ECM? If so, select it and it should provide what is stored.

Also, the scan tool you used can read the CAN codes, correct?

Let me know.

Joe
Feb 9, 2022 at 6:18 PM