Yep, that is too high it should be at about 2500 RPMs does it feel like the transmission is slipping or like is it not shifting into high gear? Can you please upload a short video of the problem so I can see it? Let's check the fluid level and condition. This guide can show you how and i have included instructions for your truck in the images below.
https://www.2carpros.com/articles/how-to-check-and-add-transmission-fluid
NOTE: MERCON Automatic Transmission Fluid is being replaced by MERCON V as a service fluid.
FLUID CHANGE
NOTE: Normal maintenance and lubrication requirements do not necessitate periodic fluid changes. If a major failure has occurred in the transmission, it will have to be removed for service. At that time the converter, transmission cooler, and cooler lines must be flushed to remove any dirt. If the vehicle accumulates 5,000 or more miles per month or is used in continuous stop and go service, change fluid every 30,000 miles as described. Procedures for partial drain and refill, due to in-vehicle service operation, are as follows:
1. Loosen pan attaching bolts and drain fluid.
2. Remove and thoroughly clean pan and screen, discarding pan gasket.
3. Place new gasket on pan and install pan on transmission.
4. Add 3 quarts of fluid to transmission through filler tube.
5. Check fluid level following room normal operating checking procedures.
NOTE: When filling a dry transmission and converter, approximate refill capacity is 9 quarts. Make final check using normal operating temperature checking procedures.
Also, I would run the codes to see what comes up.
This guide can help us:
https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing
Please go over these guides and report back.
Feb 2, 2023 at 3:16 AM
