Chevrolet Astro Crank Relearn with VXDIAG VCX NANO Tech2Win

Just wanted to confirm that the VXdiag VCX Nano does in fact work for Chevrolet Astro vans. Just make sure to get the Powerd for GM/Opel GDS2 version. It even works in a virtual machine, I bought the WIFI version and highly recommend it, no cables to drape through the window/door.

I recently picked up a 2003 Chevrolet Astro and changed the engine with a used one from a 2005 Blazer. Both engines have the same crank sensor. I need to do a relearn anytime the Crank Sensor is changed.

There is a procedure to do it without a tech II/professional grade scan tool, but it’s very complicated, the cheapest tool can do it is the VXDIAG VCX NANO.

I got the WiFi version vxdiag vcx nano gm comes with a Tech2 emulator about $125 from

Vxdiag Vcx Nano Gm Wifi

It works great for me and a lot faster than the tech2. Tech2 is 3x the cost for a clone but is standalone and you don’t need to mess with a laptop.

Larger screen. Comes with Tech2Win. You can get the user guide for tech2win. You can get your automated ABS bleed, tire size adjustments, and Crankshaft Position Sensor relearn on!
And basically everything else that the Tech2 can do, only faster and easier! Tech2 on a laptop screen with mouse controls.

I’ve replaced the crank sensor, and shortly afterwards I was getting a flashing SES light, but not constant, just kinda got a random 5 flashes then done, 8 the next time. Pulled over, had my tool with me, did the CKP relearn and the issue completely vanished. Needless to say, I will go ahead and do it with every CKP sensor change from now on.

After putting another 1500 miles on said van, never skipped a beat after that!