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Home >> Cadillac >> 2018 >> CTS V >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 8L45 (M5N) Or 8L90 (M5U) - Description And Operation >> Description and Operation >> Manual Mode Description and Operation >> Manual Mode Shifting Operation

Manual Mode Shifting Operation

  1. With the engine running, place the shift lever in Manual (M) position. The letter M of PRNDM display will initially illuminate to indicate Manual Mode, and then change to indicate the current gear.
  2. Momentary pressing the Transmission Manual Shift Switch - Right will command the transmission to the next higher gear. The current number indicated on the PRNDM display will change to a number to indicate the gear that the vehicle operator has selected, and if conditions are appropriate, commands the Transmission Control Module to upshift to that gear.
  3. Momentary pressing the Transmission Manual Shift Switch - Left will command the transmission to the next lower gear. The current number indicated on the PRNDM display will change to a number to indicate the gear that the vehicle operator has selected, and if conditions are appropriate, commands the Transmission Control Module to downshift to that gear.
  4. To exit Manual Mode, place the shift lever in Drive (D) position.