GMC TSB #PIP4723F
2021 GMC Yukon
Affected Component: FUEL SYSTEM, GASOLINE
- Summary
- This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester  and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.