Chevrolet Sonic Repair Manual: Drive Range, Second Gear (Gen 2)
As vehicle speed increases and operating conditions become appropriate, the transmission control module (TCM) processes input signals from the automatic transmission input and output speed sensors, the throttle position sensor and other vehicle sensors to determine the precise moment to command ON the normally-low 26 pressure control solenoid and shift the transmission into Second gear. The manual valve remains in the Drive (D) position and line pressure continues to feed the drive fluid circuit.
- 2-6 Clutch Applies
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26 Pressure Control (PC) Solenoid
The 26 PC solenoid is commanded ON, allowing actuator feed limit fluid to enter the PCS 26 clutch fluid circuit. PCS 26 clutch fluid is then routed through orifice #24 to the 2-6 clutch regulator valve.
2-6 Clutch Regulator Valve
PCS 26 clutch fluid, at the 2-6 clutch regulator valve, opposes 2-6 clutch regulator valve spring force and orificed 26 clutch fluid pressure to regulate drive fluid pressure into the 26 clutch circuit. 26 clutch fluid is then routed through orifice #22 to the 2-6 clutch assembly in the transmission case, and through orifice #4 to the spring end of the 2-6 clutch regulator valve.
2-6 Clutch
The 26 clutch fluid from the 2-6 clutch regulator valve is routed through the transmission case to the 2-6 clutch piston assembly. The 26 clutch fluid pressure moves the piston against 2-6 clutch spring force to apply the 2-6 clutch plates.
Accumulator
PCS 26 clutch fluid is also routed to an accumulator valve. The accumulator valve is used to dampen any pressure irregularities occurring in the PCS 26 clutch fluid circuit. This helps to control clutch apply fluid pressure and clutch apply feel.
- Drive Range, Second Gear ?#8201;Gen 2/Hybrid
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Drive Range, Second Gear (Gen 1)
As vehicle speed increases and operating conditions become appropriate, the transmission
control module (TCM) processes input signals from the automatic transmission input
and output speed sensors ...
Drive Range, Sixth Gear (Gen 1)
As vehicle speed increases, the transmission control module (TCM) processes input
signals from the automatic transmission input and output speed sensors, the throttle
position sensor and other veh ...
Other materials:
Replacing LATCH System Parts After a Crash
Warning
A crash can damage the LATCH system in the vehicle. A damaged LATCH system
may not properly secure the child restraint, resulting in serious injury or even
death in a crash. To help make sure the LATCH system is working properly after a
crash, see your dealer to have the system inspec ...
Radio Settings
Select and the following may display:
Auto Volume
Radio Favorites
Radio Tune Bar
Radio Text
XM Categories
Radio Factory Settings
Auto Volume
This feature adjusts the radio volume to compensate for road and wind noise as
the vehicle speeds up or slows down, so that the volume leve ...
Air Conditioning Clutch Assembly Replacement (LDE/LUW/LWE)
Air Conditioning Clutch Assembly Replacement
Callout
Component Name
Preliminary Procedure
Remove the air conditioning compressor. Refer to Air Conditioning Compressor
Replacement.
1
Air Conditio ...
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