Check Ignition switch. Does your speedo or tach work? If not it's the ignition switch. The transmission needs 12volts to operate and if the ignition switch is not working right you will not have first gear or overdrive, the suburban will try to take off in second and seems like your tranny is slipping!
check the transmission fluid first
It shows that there is a problem with the transmission. Just like the check engine light, the overdrive light has codes that tell you what is wrong with the transmission and the various components connected with it.
I dont know but i have a 88 & i think the trans in mine is slipping. My check engine light came on
I have an 88 Ford Taurus L wagon and something like this is happening to me. The transmission is slipping in and out of overdrive and when it does the "check engine" like goes on briefly. I still have to have it looked at so I don't know about the code. But, my car did not just quit working right away. By the way, this problem just started last week and it does appear to be getting worse.
In a 1989 Ford Ranger, if the overdrive is slipping out, it could be related to several issues, including a faulty overdrive switch, a malfunctioning governor, or low transmission fluid. There isn’t a specific sensor solely for overdrive; however, the transmission control system relies on various components that could affect its operation. It's advisable to check the transmission fluid level and condition first, and then consider having a professional diagnose the issue if it persists.
automatic? check transmission fluid,running .the check plug is behind the shift cable.should spill out when engine is warm
Check the fluid.
A slipping transmission on a 2002 Mitsubishi can be caused by low fluid levels. Check the fluid should be the first step in troubleshooting the issue.
If your 93 Nissan Pathfinder transmission won't shift into overdrive, check the transmission fluid levels. Ensure the fluid is at the proper level.
The AT check signal light means that there is something is wrong with the transmission. A slipping transmission can be the cause of this.
This can be caused by anything from a bad sensor to transmission going bad. A transmission mechanic can check for engine codes and other tests to verify if it is a simple fix or major repair.
Check transmission fluid level Try changing transmission fluid and filter