The GM Service Guy

How to Reset Your GMC Infotainment Password "Password" can mean a few different things on a modern GMC: your connected services account password, a profile PIN on the infotainment system,...

GMC Code P062F: Meaning, Causes & How to Fix It Code P062F means the Powertrain Control Module detected an internal error in its own EEPROM — the permanent memory chip...

GMC Terrain & Acadia Code P1516: Meaning, Causes & How to Fix It Code P1516 means the Throttle Actuator Control (TAC) module commanded the electronic throttle to a specific position,...

GMC Code P118B: Meaning, Causes & How to Fix It Code P118B is specific to diesel-equipped GMC models and relates to the particulate matter sensor — a component that monitors...

How to Fix a GMC Parking Brake That Won't Release or Engage Many newer GMC models use an electronic parking brake rather than a traditional cable-and-lever setup, and while it's...

How to Get Your GMC Out of Demo Mode If your GMC's infotainment screen keeps cycling through feature demonstrations, shows a demonstration watermark, or has certain functions oddly restricted, it's...

How to Fix GMC Navigation Not Working Built-in navigation issues generally fall into a few categories: the system won't show your location accurately, maps won't load at all, or the...

How to Fix Your GMC's Built-In Garage Door Opener (HomeLink) Many GMC models include a built-in HomeLink system — usually a set of buttons near the rearview mirror — that...