My 1997 Solverado does the same thing, but only when the engine is hot. I'm having a transmission specialist look at it tomorrow morning to let me know what is wrong. I'll post the results on this page when I get the answer. The best guess I got from just talking with the mechanic is that the "accumulator" may need replacing. It's not expensive.
How do you adjust a transmission passing gear cable on a 95 chevy tahoe /
A bad transmission gear can cause your 1999 Nissan frontier to shift hard. Low transmission fluid can also cause the transmission to shift hard.
Quite possibly a worn second gear clutch pack.
There are several causes that an automatic transmission will not want to shift into second gear. The two most common causes are transmission pump issues and trouble with the vacuum modulator.
3.73:1
A gear which causes the transmission output shaft to rotate at a higher speed than the transmission input shaft.
It's not in gear.
Bad transmissions can have several symptoms. The Tahoe could shake, or not go into gear properly. The vehicle can suffer fuel economy, or have trouble driving at speed due to the transmission slipping.
The problem may be that the transmission is beginning to wear out. Another possibility is that you are low on transmission fluid, which can be easily checked. If your fluid levels are fine, the transmission needs servicing.
low gear oil or gears are worn.
That happens when the transmission computer detects a malfunction and sets a trouble code. You will need to have the system checked with a scan tool to know possible causes.
Poor driver or bad transmission.