transmission won't move after shifting on reverse or forward.
Nov 16, 2021 at 11:53 AM
Vehicle will not move when transmission is shifted into reverse or forward
2009 CHEVROLET TAHOE
BLACKSHEEP65
- MEMBER
- 1 POST
- FOLLOW
Repair Safety Notice:
This information is for general instructional purposes only. Vehicle repair can be dangerous.
Verify all information, follow manufacturer service procedures, use proper tools and safety equipment,
and consult a qualified repair shop when needed.
Advertisement
More than likely this is an internal transmission issue or a fluid issue.
So, let's start with the basics and check the fluid level and condition.
Here is a guide that will help with this.
https://www.2carpros.com/articles/how-to-check-and-add-transmission-fluid
If the fluid is at the proper level, then we need to check the line pressure on the unit because I suspect the pump has failed.
The way this works is the pump in the unit needs to pressurize the fluid in order to engage the gears. So, if you didn't have forward or reverse, then it could be a valve body or solenoid issue but since you have neither, then it is a fluid issue or pressure issue.
So, let's run through checking the fluid level and then the process below is how to test the pressure.
If you don't have a gauge, then more than likely you can rent one from a parts store that has a rental program.
However, it is much more common to just be a fluid issue so if it is low then we are going to have to look for leaks.
Let me know what you find. Thanks
So, let's start with the basics and check the fluid level and condition.
Here is a guide that will help with this.
https://www.2carpros.com/articles/how-to-check-and-add-transmission-fluid
If the fluid is at the proper level, then we need to check the line pressure on the unit because I suspect the pump has failed.
The way this works is the pump in the unit needs to pressurize the fluid in order to engage the gears. So, if you didn't have forward or reverse, then it could be a valve body or solenoid issue but since you have neither, then it is a fluid issue or pressure issue.
So, let's run through checking the fluid level and then the process below is how to test the pressure.
If you don't have a gauge, then more than likely you can rent one from a parts store that has a rental program.
However, it is much more common to just be a fluid issue so if it is low then we are going to have to look for leaks.
Let me know what you find. Thanks
Images (Click to enlarge)
Nov 17, 2021 at 3:02 PM
Advertisement