ddjd said:
It is a 1996 LT1 Motor combo that came out of the same car. The transmission is controlled by the computer (ECM). I bought a brand new computer and had Street and Performance program it to my application.
It moves in reverse fine, moves forward fine but won't shift into 2nd.
OK..... thanks for the update.
there are control boxes that can be plugged into the 4L60E trans to test it's functions. Shaffer Shifter is a brand name of box... there are also other break out type boxes for such tests.
the Shaffer shifter will operate the trans separate from your ECM to verify if the trans is good and follows the electronic commands.
Since your trans does not shift at all...... the ECM must be checked / scanned for what data it is receiving.
Since you posted that a scanner was unable to retrieve the data. I ask :" what type of scanner was used?" A quality scanner with the proper software to link to the ECM must be used.
Since you received no response from the vendor yet, I would start calling till you get a human that can provide answers for your problem.
Do you have a speed sensor on the trans that feeds the ECM? What design? Gear driven or the metal disc ( reluctor) on the out put shaft?
The ECM must have proper data input to operate/shift the trans.
photo below shows parts I am speaking about. Sensors ( 2 designs) and the reluctor wheel/disc.