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HOMESERVICE MANUALSCADILLAC2011ESCALADE BASE, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 920 (AUTOMATIC TRANSMISSION - ALLISON - REMOVAL & INSTALLATION, SERVICE, OVERHAUL, TROUBLESHOOTING & DIAGNOSIS)DIAGNOSTIC INFORMATION AND PROCEDURESFASTLEARN PROCEDUREOVERVIEW
2011 Cadillac Escalade Base, AWD

FastLearn Procedure: Overview

2011 Cadillac Escalade Base, AWDSECTION Overview
WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

In general, FastLearn is a procedure for Allison 1000 Series transmissions in which a series of tests are run to allow the transmission control module (TCM) to learn individual clutch characteristics. Once the clutch data is learned, FastLearn translates it to the adaptive data cells, which the TCM uses for clutch control during range shifts. FastLearn is used at GM assembly plants, and allows the vehicle to be driven out of the assembly plant in a near-fully-adapted state to minimize any customer shift concerns. The scan tool version of FastLearn is intended to provide the same benefit following transmission repair or replacement at GM Dealerships.

FastLearn must be used when one of the following repairs have been made to the vehicle:

  • Transmission replacement or internal service/overhaul
  • Valve body repair or replacement, including replacement of the pressure control solenoids
  • TCM replacement
  • TCM software/calibration update
  • Any service in response to a shift quality concern

The scan tool is used to initiate FastLearn by selecting the following commands:

  • F3: Special Functions
  • F1: Transmission Output Controls
  • FastLearn
IMPORTANT: When performing FastLearn, the following conditions must be met:
  • Block the drive wheels.
  • Apply the parking brake.
  • Apply the service brake during DRIVE and REVERSE.
  • 0 percent throttle and engine at idle RPM
  • Transmission sump temperature is between 40-100°C (104-212°F) - Ref temp bargraph on screen.
  • If equipped, 4WD transfer case in 2WD
IMPORTANT: If at any time during the procedure, required conditions are not met, FastLearn may abort and the process will need to be started again from the beginning.

Three steps are required to successfully complete the FastLearn procedure:

  1. PARK Mode
  2. DRIVE Mode
  3. REVERSE Mode
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.