ran diagnostics and it said low voltage on quite a number of things. could it be battery?
Dec 3, 2019 at 7:02 PM
check engine light came on and it would not shift into overdrive
2005 CHEVROLET COBALT
GAILW
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Can you provide us with the exact trouble codes you got? Once we see the codes we will provide a diagnostic path for you to follow.
Dec 4, 2019 at 12:53 AM
changed battery and that got rid of low voltage items. ran diagnostics again and the code PO974 came up. it said shift solenoid's. can no longer get into high gear.
Dec 6, 2019 at 9:37 AM
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Check fuse #10 inside cabin. 10A fuse.
2005 Chevrolet Cobalt
L4-2.2L VIN F
4T40-E / 4T45-E Automatic Transaxle
Vehicle ALL Diagnostic Trouble Codes ( DTC ) Testing and Inspection P Code Charts P0974 4T40-E / 4T45-E Automatic Transaxle
4T40-E / 4T45-E AUTOMATIC TRANSAXLE
DTC P0974
Open In New TabZoom/Print
Circuit Description with 4T40-E / 4T45-E Automatic Transaxle
The 1-2 shift solenoid (SS) valve controls transmission fluid pressure acting on the 1-2 and 3-4 shift valves to position the valves for the appropriate gear. The 1-2 SS valve is a normally open exhaust valve located on the lower control valve body. Ignition voltage is supplied to the solenoid. The transmission control module (TCM) commands the solenoid ON or OFF by providing a ground path. When the 1-2 SS valve is commanded ON, the TCM senses low voltage. When the 1-2 SS valve is commanded OFF, the TCM senses high voltage.
If the TCM detects a continuous short to voltage in the 1-2 SS valve circuit, then DTC P0974 sets. DTC P0974 is a type B DTC.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC P0974 1-2 Shift Solenoid (SS) Control Circuit High Voltage
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
The 1-2 SS valve feedback circuit indicates a continuous short to voltage for 4.4 seconds.
Action Taken When the DTC Sets
^ The TCM illuminates the malfunction indicator lamp (MIL) during the second consecutive trip in which the Conditions for Setting the DTC are met.
^ The TCM commands maximum line pressure.
^ The TCM freezes transmission adaptive functions.
^ The TCM records the operating conditions when the Conditions for Setting the DTC are met. The TCM stores this information as Freeze Frame and Failure Records.
^ The TCM stores DTC P0974 in TCM history during the second consecutive trip in which the Conditions for Setting the DTC are met.
Conditions for Clearing the MIL/DTC
^ The TCM turns OFF the MIL during the third consecutive trip in which the diagnostic test runs and passes.
^ A scan tool can clear the MIL/DTC.
^ The TCM clears the DTC from TCM history if the vehicle completes 40 warm-up cycles without an emission related diagnostic fault occurring.
^ The TCM cancels the DTC default actions when the ignition switch is OFF long enough in order to power down the TCM.
If fault tracing leads to a bad solenoid, with the high mileage I would recommend you swap out the transmission.
2005 Chevrolet Cobalt
L4-2.2L VIN F
4T40-E / 4T45-E Automatic Transaxle
Vehicle ALL Diagnostic Trouble Codes ( DTC ) Testing and Inspection P Code Charts P0974 4T40-E / 4T45-E Automatic Transaxle
4T40-E / 4T45-E AUTOMATIC TRANSAXLE
DTC P0974
Open In New TabZoom/Print
Circuit Description with 4T40-E / 4T45-E Automatic Transaxle
The 1-2 shift solenoid (SS) valve controls transmission fluid pressure acting on the 1-2 and 3-4 shift valves to position the valves for the appropriate gear. The 1-2 SS valve is a normally open exhaust valve located on the lower control valve body. Ignition voltage is supplied to the solenoid. The transmission control module (TCM) commands the solenoid ON or OFF by providing a ground path. When the 1-2 SS valve is commanded ON, the TCM senses low voltage. When the 1-2 SS valve is commanded OFF, the TCM senses high voltage.
If the TCM detects a continuous short to voltage in the 1-2 SS valve circuit, then DTC P0974 sets. DTC P0974 is a type B DTC.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC P0974 1-2 Shift Solenoid (SS) Control Circuit High Voltage
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
The 1-2 SS valve feedback circuit indicates a continuous short to voltage for 4.4 seconds.
Action Taken When the DTC Sets
^ The TCM illuminates the malfunction indicator lamp (MIL) during the second consecutive trip in which the Conditions for Setting the DTC are met.
^ The TCM commands maximum line pressure.
^ The TCM freezes transmission adaptive functions.
^ The TCM records the operating conditions when the Conditions for Setting the DTC are met. The TCM stores this information as Freeze Frame and Failure Records.
^ The TCM stores DTC P0974 in TCM history during the second consecutive trip in which the Conditions for Setting the DTC are met.
Conditions for Clearing the MIL/DTC
^ The TCM turns OFF the MIL during the third consecutive trip in which the diagnostic test runs and passes.
^ A scan tool can clear the MIL/DTC.
^ The TCM clears the DTC from TCM history if the vehicle completes 40 warm-up cycles without an emission related diagnostic fault occurring.
^ The TCM cancels the DTC default actions when the ignition switch is OFF long enough in order to power down the TCM.
If fault tracing leads to a bad solenoid, with the high mileage I would recommend you swap out the transmission.
Images (Click to enlarge)
Dec 6, 2019 at 8:52 PM
can you put the info in more understandable terms?
Dec 9, 2019 at 12:06 PM
If i can but in here. it sounds like the alternator is not working correctly or a bad battery. here are two guides to help check both:
https://www.2carpros.com/articles/how-to-check-a-car-alternator
and
https://www.2carpros.com/articles/car-battery-load-test
Please run down these guides and report back.
https://www.2carpros.com/articles/how-to-check-a-car-alternator
and
https://www.2carpros.com/articles/car-battery-load-test
Please run down these guides and report back.
Dec 12, 2019 at 1:11 PM