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Hi Ashley Farmer , my name is Jeff Armer . Which solenoid , your Cavalier has four , Pressure control solenoid , TCC - torque converter clutch solenoid , 1-2 shift solenoid and 2-3 shift control solenoid . And all are located inside the transmission . Do you have a DTC - diagnostic trouble code stored in the PCM - powertrain control module ?
What are you talking about auto shift control solenoid ? Which transmission does yours have ?
Automatic Transaxle - 3T40 Automatic Transaxle - 4T40-E
1-2 Shift Solenoid Valve
In transmission valve body
Transmission Component Location
Automatic Transmission Internal Connector End Views
2-3 Shift Solenoid Valve
In transmission valve body
Is there a DTC - diagnostic trouble code stored ? Which gear or gears are not working ?
Here is what the service manual says about the EPC solenoid, the processor looks at allot of different inputs to command the solenoids, such as Throttle Position Sensor, Vehicle Speed Sensors, Transmission Range Sensor and RPM signal, The PCM controls the shift patterns for the transmission. Electronic Pressure Control (EPC) Solenoid The electronic pressure control (EPC) solenoid is located on the main control valve body and is controlled by the PCM. The EPC controls line pressure used to apply and release clutches and bands in the transmission. The 2-3 shift solenoid is located on the main control valve body and is switched on and off by electrical signals from the PCM. The 2-3 shift solenoid activates the 2-3 shift valve which controls the automatic shifting between second and third gear. Second gear is established when the 2-3 shift solenoid is switched on. The 2-3 shift solenoid is switched off when vehicle speed increases and requires a second to third gear upshift. The 3-4 shift solenoid is located on the main control valve body and is switched on and off by electrical signals from the PCM. The 3-4 shift solenoid activates the 3-4 shift valve which controls the automatic shifting between third and fourth gear. Third gear is established when the 3-4 solenoid is switched off. The 3-4 shift solenoid is switched on when vehicle speed increases and requires a third to fourth gear upshift.
Shift - interlock system problem .
Automatic Transmission Shift Lock Control System
The automatic transmission shift lock control system is a safety device that prevents an inadvertent shift out of PARK when the engine is running. The driver must press the brake pedal before moving the shift lever out of PARK position. The system consists of the following components:
• The automatic transmission shift lock control solenoid
• The automatic transmission park lock solenoid
• The automatic transmission shift lock control switch
• The transmission range switch
With the ignition in the ON position, battery voltage is supplied to the automatic transmission shift lock control switch. The circuit continues through the normally-closed switch to the automatic transmission shift lock control solenoid. The transmission range switch provides a path to ground for the automatic transmission shift lock control solenoid in the PARK position. With the automatic transmission shift lock control solenoid energized the shift lever is mechanically locked in the PARK position. When the driver presses the brake pedal, the contacts in the automatic transmission shift lock control switch open, de-energizing the automatic transmission shift lock control solenoid. This allows the shift lever to move from the PARK position. When the shift lever is out of the PARK position the controlled ground contacts in the transmission range switch open. This prevents the automatic transmission shift lock solenoid from energizing when the vehicle is out of the PARK position.
IT DOESN'T SAY THE SOLENOID IS BAD, JUST THAT IT HAS A PROBLEM IN THE CIRCUIT TO THE SOLENOID, THIS CAN BE WIRING OR THE SOLENOID THAT IS AT ISSUE. THE SOLENOID IS PART OF A PACK OF SHIFT SOLENOIDS AND IT IS LOCATED INSIDE THE TRANSMISSION, YOU MUST REMOVE THE PAN FROM THE TRANSMISSION AND IT IS ATTACHED TO THE VALVE BODY. THIS IS A VERY MESSY JOB BECAUSE THERE IS NO FLUID DRAIN PLUG.
This solenoid is responsible for feeding the correct transmision fluid 'pressure' through the valve body. The valve body is located inside your transmission and contains multiple valves & shifting solenoids, responsible for the correct shifting behaviour of your gears etc.
To gain access to the valve body/sole, you will need to drain transmission fluid, then undo the transmission cover.
You will need to check the resistance of each solenoid, to confirm they are within factory spec.
Some transmission designs will provide access to the solenoids once you remove the trans cover (this design allows you to easily test/replace the solenoids), but if your design requires the removal of the valve body first, then you should leave this job to an experienced FORD transmission specialist, as the valve body is a very delicate piece of machinery with many minute parts. The valve body can be very easily damaged, if not treated with care.
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Shift solenoids control your transmission shifting. More than likely you will need to replace that solenoid, which is located in the transmission valve body. I would guess its about a $300 repair depending on the price of the solenoid.
geode07 : Not knowing which shift solenoid you are seeking, I will give you both.
The first has to do with the internals of the transmission. The "Transmission" shift solenoid referenced there is located within the main control body assembly.
The second is referred to as a "Shift interlock Solenoid"
This is located within the steering column.