Chevrolet Equinox manuals

Chevrolet Equinox Service Manual: Transmission Adaptive Functions Automatic Transmission Unit

Chevrolet Equinox Service Manual / Powertrain / Transmission/Transaxle / Transmission Adaptive Functions Automatic Transmission Unit

The 6T30/40/45/50 transmission utilizes a line pressure control system during upshiftsto compensate for the normal wear of transmission components. As the apply componentswithin the transmission wear or change over time, shift time (the time required toapply a clutch) increase or decreases. In order to compensate for these changes, thetransmission control module-(TCM) adjusts the pressure commands to the various PCsolenoids,to maintain the originally calibrated shift timing. The automatic adjusting processis referred to as “adaptive learning” and it is used to ensure consistent shift feelplus increase transmission durability. The TCM monitors the A/T input speed sensor-(ISS)and the A/T output speed sensor-(OSS) during commanded shifts to determine if a shiftis occurring too fast (harsh) or too slow (soft) and adjusts the corresponding pressurecontrol-(PC) solenoid signal to maintain the set shift feel.

The purpose of the adapt function is to automatically compensate the shift qualityfor the various vehicle shift control systems. The adapt function is a continuousprocess that will help to maintain optimal shift quality throughout the life of thevehicle.

Non-Shifting Clutch Function Verification Description Automatic Transmission Unit
The 6T30/40/45/50 transmission uses a pressure control system to apply and releaseclutches during shifts. The transmission control module (TCM) controls pressure commandsto the pressure control soleno ...

Non-Shifting Clutch Function Verification Description Automatic Transmission Unit
The 6T70/75 transmission uses a pressure control system to apply and release clutchesduring shifts. The transmission control module (TCM) controls pressure commands tothe pressure control solenoids.As ...

Other materials:

Compass
The vehicle may have a compass display on the Driver Information Center (DIC). The compass receives its heading and other information from the Global Positioning System (GPS) antenna, StabiliTrak, and vehicle speed information. The compass system is designed to operate for a certain numbe ...

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