GM-only full system scanner with bidirectional control, so you can command 4L60E and 6L80 solenoids and read TCM live data on the lift.
A 4L60E that flares on the 2-3, starts in 2nd, or sets P0751, P0756 or P0741 can be a solenoid, a wiring fault, a worn valve body bore or a burned clutch pack, and those fixes range from a $40 part to a full rebuild. A generic code reader gives you the code and nothing else. The XTOOL IP500 for GM is a dedicated Buick, Chevrolet, Cadillac and GMC scan tool with full-system access and bidirectional control, so you can watch what the transmission computer sees and command its outputs yourself on a 1999-2025 GM truck, SUV or car.
The 4L60E picks its gears with two on/off shift solenoids. Shift solenoid A and B are both on in 1st, B alone is on in 2nd, both are off in 3rd, and A alone is on in 4th. That is why a 4L60E with no solenoid power defaults to 3rd. Line pressure is set by the pressure control (EPC) solenoid, and the converter clutch is applied by the TCC solenoid. Live data shows gear commanded versus the ratio actually achieved, TCC slip speed, input and output speeds and fluid temperature while you drive. Bidirectional control lets you switch those solenoids on and off with the truck on the lift, so you can hear or feel the result instead of guessing from a stored code.
Our 4L60E common problems guide walks through what each of those failures looks like and which parts usually cause it.
Start with a full-system scan, because an engine, wheel speed or throttle fault can make the transmission behave badly with no trans code at all. Then graph commanded gear, TCC slip and output speed on a test drive and note where the complaint happens. Back on the lift, command shift solenoid A and B and the TCC solenoid and watch for a response. A solenoid that will not respond, or a circuit that reads open, points to the 2003-up master solenoid kit or the harness. A solenoid that responds while the slip codes come back points to valve body wear or a leak. One caution: the 4L60E has no line pressure sensor, so the EPC reading on any scan tool is a commanded value. Back it up with a mechanical gauge on the line pressure port before you condemn an EPC solenoid.
This is the GM-only version of the IP500. The listing covers Buick, Chevrolet, Cadillac and GMC from 1999 through 2025, including the 4L60E, 4L80E, 6L80, 6L90, 6T70 and 8L90 transmission modules plus engine, ABS, airbag and body modules. It will not diagnose Ford, Chrysler or import vehicles. Function support varies by model and year, so if you have an older or unusual GM, send us the year and VIN and we will check before you order. For everything else on this unit, see our 4L60E parts collection.
If the data shows internal damage, our 4L60E bench rebuild tools guide covers the next step.
| Vehicle coverage | |
| Screen | |
| Diagnostics | |
| Bidirectional control | |
| Service resets | |
| Updates |
Yes. It has full bidirectional control on GM, so you can switch the shift, TCC and pressure control outputs on and off and watch the response, as supported by the specific model and year.
No. This version is locked to Buick, Chevrolet, Cadillac and GMC. Buy a multi-brand tool if you work on other makes.
It shows the pressure control values the computer reports, but the 4L60E has no pressure sensor, so that number is commanded, not measured. Use a mechanical line pressure gauge to confirm actual pressure.
No. The listing includes lifetime free software updates. Run the update when you first set the tool up.
Yes. Crank position variation relearn is one of its 28-plus service resets, along with throttle relearn, ABS bleed, electric parking brake, TPMS and others.
