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Home › Buick › 1994 › Roadmaster Base › Repair and Diagnosis › Engine Performance › System › Engine Controls - Tests W/Codes - 5.7L › ECM/Pcm Code Charts › Code 90, TCC Solenoid Circuit › Notes

Code 90, TCC Solenoid Circuit: Notes

NOTE: Test numbers refer to numbers on diagnostic chart.
  1. Checks for a shorted internal transmission harness or TCC solenoid.
  2. Checks power supply to TCC solenoid.
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