Chevrolet Sonic manuals

Chevrolet Sonic Repair Manual: 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, the throttle position sensor and other vehicle sensors to determine the precise moment to command ON the normally-low 2-6 pressure control solenoid 4 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

26 Pressure Control (PC) Solenoid 4

The 26 PC solenoid 4 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 #37 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. With the 2-6 clutch regulator valve in this position, PS2 fluid is allowed to exhaust and the normally-closed PS2 switch closes.

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.

Drive Range, Second Gear

lowreverseclclutchpressurepressureconvrolnlonn.hnhon:nlclutchactfdumtorqueclconverterassemblvpcsexbf-compreleasepcstdccoolercompensatorfeedregulatorvalvesolblow-offfluidpressuressuctionconverterlubelinepcslinesolenoidactuatorcompensatdr
Drive Range, First Gear Engine Braking (Gen 2)
Note: Some models of the 6T30/40/45/50 automatic transmission are equipped with an electric auxiliary fluid pump for use in hybrid vehicles (BAS+). Hybrid vehicles do not require internal combusti ...

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 ...

Other materials:

Hood Primary Latch Release Cable Replacement
iv Hood Primary Latch Release Cable Replacement Callout Component Name Preliminary Procedures Remove the radiator opening upper cover. Refer to Front Opening Upper Cover Replacement. Remove the air inlet grille. Refer to A ...

Heater Core Outlet Tube Replacement
Heater Core Outlet Tube Replacement Callout Component Name Preliminary Procedures Remove the Heater and Air Conditioning Evaporator and Blower Module. Refer to Heater and Air Conditioning Evaporator and Blower Module Removal ...

Engine Replacement (Automatic Transmission)
Special Tools J-45859 Wheel Drive Shaft Remover CH-807 Closure Plugs For equivalent regional tools, refer to Special Tools. Removal Procedure Remove the battery and battery tray. Refer to Battery Tray Replacement. Relieve the fuel system pressure. Refer to Fuel Pressur ...

В© 2014-2021 Copyright www.csmans.com
   
0.0163