LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1408 (Entertainment System) >> Diagnostic Information and Procedures >> DTC B1271 >> Conditions for Clearing the MIL/DTC

Conditions for Clearing the MIL/DTC

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

Re-calibration with the correct calibrations for the vehicle and cycling the Radio to OFF then to ON will clear the DTC if there is no damage to the Radio.

DTC B1271

Step Action Yes No
1 Did you perform the Entertainment System Diagnostic System Check? Go to Step 2  Go to Diagnostic System Check - Entertainment System 
2
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With a scan tool perform the VIN relearn procedure. Refer to Radio Setup (With RPO UM8)  .
Does the DTC Reset?
Go to Step 3  System OK
3 Replace the radio. Refer to Radio Replacement  .
Did you complete the replacement?
System OK -