How do I setup COMPUSHIFT using the App?

I hear a buzzing in the transmission with the key on and engine off. Is this normal?

Is it safe to piggyback a throttle position sensor (TPS)?

Can I connect the tachometer output from my ignition system both the tachomter input to the COMPUSHIFT and a tachometer gauge on the dash?

How do I get the tachometer to work on COMPUSHIFT on a diesel engine?

Do I need a laptop computer to program the system?

Does the torque converter clutch (TCC) unlock during gear changes?

How do I run a speedometer with COMPUSHIFT?

How do I use an existing throttle position sensor (TPS)?

How much does COMPUSHIFT cost?

I don't understand the function of the "always upshift at" setting. What exactly does it do?

I've installed COMPUSHIFT on a rebuilt GM transmission, but it doesn't shift correctly. What could be wrong?

My GM 4L60E / 4L80E transmission doesn't shift at all and / or the gear indicator shows "I" on screen.

My GM 4L80E transmission doesn't shift at the right speed.

My COMPUSHIFT is acting erratically. What could cause this?

Occasionally, my COMPUSHIFT shuts down entirely, but later restarts and works correctly. Why would it do this?

What is the difference between PWM and non-PWM torque converter clutches?

How do I mount the COMPUSHIFT display in my vehicle?

What is the hole size for the firewall grommet?