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Home >> Buick >> 2013 >> Verano Base >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Shift Lock Control System >> Diagnostic Information and Procedures >> DTC B270A >> Component Testing

Component Testing

Dynamic Test

  1. Install a 10 A fused jumper wire between the control terminal 4 X1 and 12 V. Momentarily install a jumper wire between the ground terminal 2 X1 and ground.
  2. Verify the solenoid turns on & off/clicks, etc.
    • If the solenoid does not turn on & off/clicks, etc. 

      Replace the S3 transmission shift lever.

    • If the solenoid does turn on & off/clicks, etc. 
  3. All OK