P0785 GMC Code - 3-2 Shift Solenoid Circuit Electrical
Quick Answer
The P0785 diagnostic trouble code (DTC) for GMC vehicles specifically refers to a problem with the 3-2 Shift Solenoid Circuit Electrical. Common causes include Faulty 3-2 shift solenoid, Wiring issues or shorts in the electrical circuit, Low transmission fluid levels or dirty fluid. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0785 GMC indicates 3-2 Shift Solenoid Circuit Electrical.
- Common causes
- Common causes include Faulty 3-2 shift solenoid, Wiring issues or shorts in the electrical circuit, Low transmission fluid levels or dirty fluid.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P0785 GMC Description
The P0785 diagnostic trouble code (DTC) for GMC vehicles specifically refers to a problem with the 3-2 Shift Solenoid Circuit Electrical. This code indicates that there is an issue with the electrical circuit that controls the 3-2 shift solenoid in the transmission. The 3-2 shift solenoid is responsible for controlling the shifting between third and second gear in the transmission.
Common Causes of P0785 GMC
- Faulty 3-2 shift solenoid
- Wiring issues or shorts in the electrical circuit
- Low transmission fluid levels or dirty fluid
- Malfunctioning PCM
- Mechanical transmission issues
Symptoms of P0785 GMC
- Harsh or delayed shifting between gears
- Slipping or flaring between gears
- Erratic shifting patterns
- Transmission staying in one gear
- Illumination of the check engine light
How to Fix P0785 GMC
- Diagnose the issue: Use a scan tool to retrieve the trouble code and perform a thorough inspection of the 3-2 shift solenoid and its circuit to pinpoint the exact cause of the problem.
- Replace the 3-2 shift solenoid: If the solenoid is found to be faulty, it will need to be replaced with a new one. This may require removing the transmission pan to access the solenoid.
- Repair wiring or electrical issues: Check for any wiring issues or shorts in the circuit and repair or replace them as needed.
- Check and replace transmission fluid: Ensure that the transmission fluid is at the correct level and in good condition. Replace the fluid if it is dirty or contaminated.
- Clear the trouble code: After the repairs have been made, clear the trouble code from the PCM's memory using a scan tool to reset the check engine light.
Cost to Fix P0785 GMC
The typical repair costs for addressing a P0785 code can vary depending on the extent of the issue and the specific repairs needed. On average, the cost of replacing a shift solenoid can range from $150 to $400, including parts and labor. Additional costs may be incurred for diagnosing the issue, replacing wiring or other components, and any necessary transmission fluid changes. It's important to note that labor rates at auto repair shops can vary, so it's advisable to check with local shops for more accurate pricing.
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