Chevrolet Sonic Repair Manual: Transmission Adaptive Functions
The 6T30/40/45/50 transmission utilizes a line pressure control system during upshifts to compensate for the normal wear of transmission components. As the apply components within the transmission wear or change over time, shift time (the time required to apply a clutch) increase or decreases. In order to compensate for these changes, the transmission control module (TCM) adjusts the pressure commands to the various PC solenoids, to maintain the originally calibrated shift timing. The automatic adjusting process is referred to as ?daptive learning?and it is used to ensure consistent shift feel plus 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 shift is occurring too fast (harsh) or too slow (soft) and adjusts the corresponding pressure control (PC) solenoid signal to maintain the set shift feel.
The purpose of the adapt function is to automatically compensate the shift quality for the various vehicle shift control systems. The adapt function is a continuous process that will help to maintain optimal shift quality throughout the life of the vehicle.
Ignition Transmission Lock Check
While parked, and with the parking brake set, try to turn the ignition to LOCK/OFF
in each shift lever position.
For automatic transmission vehicles, the ignition should turn to LOCK/OFF
onl ...
Transmission Assemble (Gen 1)
Special Tools
3-9506289 Universal Adapter
R-0007758 Holding Fixture
S-9407197 Differential Rotating Tool
S-9407198 Differential Bearing Race Wrench
For equivalent regional tools, refer ...
Other materials:
Remote Keyless Entry (RKE) System Operation
The RKE transmitter may work up to 60m (195 ft) away from the vehicle.
Other conditions can affect the performance of the transmitter. See Remote Keyless
Entry (RKE) System.
The RKE transmitter can have one of the two symbols for the remote trunk release.
With Remote Start Shown
The follow ...
Instrument Panel Tie Bar Replacement
Removal Procedure
Remove the Instrument panel assembly. Refer to Instrument Panel Assembly
Replacement.
Remove the steering column and wheel from the vehicle. Refer to Steering
Column Replacement.
Remove the air inlet grill panel. Refer to Air Inlet Grille Panel Replacem ...
SPORT mode
The symbol of this Nissan Armada mode is
.
When SPORT mode is activated in the Nissan Armada, the vehicle is tuned for a
more dynamic and responsive driving experience. In this mode, 4WD options such as
4H and 4L are not available. Refer to the Nissan Armada All-Mode 4WD system for
additiona ...
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