VXDIAG VCX SE or Topdon Rlink X7 GM for Techline Connect programming?
Here comes a latest user review:
Got tired of having the dealer try and update my GMC Sierra truck and not completing everything so I decided to pay the $45 and do it myself. My first issue was my J2534 tool (VXDIAG VXC SE) didn’t support CAN FD, not clear why they can’t update the tool as it’s made to support all protocols. So I decided to try the new Topdon Rlink X7 GM interface and it worked, so no you don’t need the $900 MDI2. Had a few issues with the radio update but after skipping the usb status step all was normal again. Looks like after the VWP only the radio, UWB, and telematics were not updated.
