Diagnostic Fault Information

2020 GMC Acadia SLSECTION Diagnostic Fault Information
WARNING: This page is about a different car, the 2019 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
6 V Reference B390F 08, B399A 02 B390F 08, 1 B399A 01 -
Video Signal + 1, 2 1 1, 2 -
Video Signal - 1, 2 1 1, 2 -
Low Reference - B390F 08, 1 - -
1. Camera inoperative
2. Poor image quality displayed from camera
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.