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Home >> GMC >> 1994 >> C3500 HD 6.5 F, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - Electronic Transmission >> Trouble Code Charts >> Code 39, TCC Stuck Off >> Notes

Code 39, TCC Stuck Off: Notes

NOTE: Test numbers refer to numbers on diagnostic chart.
  1. Checks the mechanical status of the TCC. When PCM commands the TCC solenoid off, TCC slip speed should increase.
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