Hot Check

s2 m 26.04.005

Recommended Method

With the vehicle on a level surface and the transmission in neutral at operating temperature, perform the steps below.

  1. On the transmission shift selector, press the up and down arrow keys simultaneously. See Fig. .

    1. Shift Selector Display Screen

    Fig. 1, Transmission Shift Selector

  2. Release the arrow keys and wait for a two-minute countdown.
  3. The transmission shift selector display screen will display one of the following messages.

    • OL - OK indicates an acceptable oil level.

    • OL - HI followed by a number indicates the amount that is over-filled.

    • OL - LO followed by a number indicates the amount that is under-filled.

    • OL - 70 indicates that the transmission is not up to operating temperature.

Note:
Parent topic: Allison Transmission Fluid and Filter Changing
Document Number: 0000121218
Manual Publication Date: 2024-05-24
Topic Publication Date: 2026-10-14