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2010 Chevy Cobalt P0751 and P0752: Shift Solenoid A Stuck On/Off - Diagnosis and Fix

Model: 2010 Chevy Cobalt Fault Code: P0751 Posted: 2018-02-11 19:51

My 2010 Chevrolet Cobalt with a 2.2L engine has the check engine light on. After scanning, the fault codes show P0700 (Transmission Control Module), P0751, and P0752 — indicating the shift solenoid A is stuck in either an 'on' or 'off' state. How can both P0751 and P0752 be present? What steps should I take to diagnose and fix this issue? P0700 is a generic code meaning there's a problem with the transmission system, not specifically tied to the TCM. It typically appears alongside more specific codes like P0751 and P0或2, which point directly to shift solenoid issues. The most likely cause is a defective shift solenoid A. Before replacing the solenoid, it's essential to test the entire circuit — including wiring harnesses, connectors, fuses, and power supply — to rule out electrical faults.

Related fault codes
P0751P0752
Comments (4)
Anonymous 2018-02-12 10:05

P0700 is not a TCM-specific code; it's a generic transmission fault that indicates an issue within the transmission system. It usually appears alongside more specific codes like P0751 and P0752, which help pinpoint the actual problem. In this case, a faulty shift solenoid A is likely. Before replacing the solenoid, test the circuit — including wiring, connectors, fuses, and power supply — to ensure it's not an electrical issue.

Anonymous 2018-02-12 10:14

The wiring issue should be checked between the TCM and the transmission valve body. Specifically, verify the integrity of the harness connecting the TCM to the shift solenoid A in the transmission.

Anonymous 2018-02-12 10:49

Shift solenoids are located inside the transmission's valve body. To diagnose, check for voltage on the red wire (connected from underhood fuse block) and continuity on the light green wire that runs from shift solenoid A (1-2 gear solenoid valve) to the TCM. If both signals are normal, replacing the shift solenoid A is the next step.

Anonymous 2018-02-22 12:14

The TCM is not just a plug near the fuse box — it's an electronic control module located in the vehicle’s instrument panel or underhood area. The wiring runs from the TCM to the transmission valve body, and while direct access to the transmission is required for internal inspection, external circuit checks can be performed without full disassembly.