HomeAll RepliesReply To: 2013 Terrain speedometers reading 2 different speeds Reply To: 2013 Terrain speedometers reading 2 different speeds Sponsored May 12, 2024 at 11:14 am #812723 Parts Man1Participant Mechanical one needs to be calibrated Sponsored Subscribe to GM Authority For around-the-clock GM news coverage We'll send you one email per day with the latest GM news. It's totally free. First Name Last Name Email Address Subscribe via Email Leave this field empty if you're human: Sponsored