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HOMESERVICE MANUALSCHEVROLET2019TAHOE LS, 4WD, GAS/ETHANOLREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 98 (CELLULAR SYSTEM, ENTERTAINMENT SYSTEM, AND NAVIGATION SYSTEM)SPECIAL TOOLS AND EQUIPMENTSPECIAL TOOLS (MIT TOOL INSTRUCTIONS)TROUBLESHOOTING GUIDE
2019 Chevrolet Tahoe LS, 4WD, Gas/Ethanol

Troubleshooting Guide

2019 Chevrolet Tahoe LS, 4WD, Gas/EthanolSECTION Troubleshooting Guide
WARNING: This page is about a different car, the 2018 Chevrolet Sonic. However, it is still accessible from the selected car via links, so may be relevant.

If the MIT unit is still not working properly after following the below troubleshooting, the unit is malfunctioning and should be repaired or replaced.

Unit not Working

  • Verify the MIT is powered on correctly as indicated by the green Power LED.
  • If Power LED is not illuminated, verify USB power source is working properly.
  • If USB power adapter is being used to power the MIT, check and, if necessary, replace the fuse in adapter.

Problem with Aux/Line-In Test

  • Verify Aux/Line- In test cable is inserted properly into the vehicle audio input jack. Verify the MIT is in Aux/Line-In mode as indicated by the red AUX LED.
  • Verify the vehicle audio system is in Auxiliary or Line-in mode. Verify the vehicle audio system volume is turned up and not in mute mode.

Problem with USB Test

  • Verify MIT is in USB mode as indicated by the red USB LED. Verify the vehicle audio system is in USB mode.
  • Verify the vehicle audio system volume is turned up and not in mute mode.

Problem with Bluetooth Pairing

  • Delete previous devices stored in the device list of the radio and the pair the MIT
  • Remove USB cable, and then reconnect to reset the MIT. Carefully follow the bonding instructions for the correct Passkey procedure.

Problem with Bluetooth Test Call Audio

  • Verify the MIT is paired with the vehicle. This is indicated by the quick flashing Bluetooth LED.
  • Audio system should have indicated the MIT is bonded.
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When to See a Mechanic

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

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