P0734 2014 Chevrolet Silverado Code - Transmission 4th Gear Ratio Incorrect
Quick Answer
The transmission turbine speed sensor and vehicle speed sensor are hall-effect sensors. Common causes include Low transmission fluid level, Shift solenoid mechanical fault, Faulty Turbine Sensor. 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
- P0734 2014 Chevrolet Silverado indicates Transmission 4th Gear Ratio Incorrect.
- Common causes
- Common causes include Low transmission fluid level, Shift solenoid mechanical fault, Faulty Turbine Sensor.
- 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.
Code P0734 2014 Chevrolet Silverado Description
The TCM provides a 9 V reference circuit and a signal circuit to each of the sensors. As the 1-2-3-4-5-6 clutch piston housing and transmission output shaft or transfer case output rotates, the sensors produce a signal frequency based on the teeth on the reluctor wheel. The TCM calculates the transmission gear ratio based on the speed sensor signals and compares the calculated gear ratio to the commanded gear ratio.
The Diagnostic Trouble Code (DTC) will be set when the TCM detects the calculated gear ratio with 4th gear commanded differs from the known 6th gear ratio for 2 s.
What are the Possible Causes of the DTC P0734 2014 Chevrolet Silverado?
- Low transmission fluid level
- Shift solenoid mechanical fault
- Faulty Turbine Sensor
- Faulty Output Speed Sensor
How to Fix the DTC P0734 2014 Chevrolet Silverado?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0734 2014 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0734 2014 Chevrolet Silverado Code
1. What does OBDII code P0734 mean for my 2014 Chevrolet Silverado?
This code indicates that the transmission is not shifting into 4th gear correctly, leading to an incorrect gear ratio.
2. What are the common symptoms of P0734 in a Chevrolet Silverado?
Symptoms may include harsh shifting into 4th gear, slipping or hesitation during acceleration, decreased fuel efficiency, and illuminated transmission warning lights.
3. What are the possible causes of P0734 in a 2014 Silverado?
Common causes include low transmission fluid levels, a faulty transmission solenoid, a malfunctioning clutch system, or issues with the transmission control module.
4. How can I diagnose the P0734 code in my Chevrolet Silverado?
Diagnosis typically involves a thorough inspection of the transmission fluid level and condition, conducting a road test to observe shifting behavior, and using a scan tool to monitor transmission sensor data.
5. Can driving with the P0734 code damage my Silverado's transmission?
Continuously driving with this code can potentially cause further damage to the transmission components due to improper gear engagement and increased wear on internal parts.
6. What are some DIY repair tips for resolving P0734 on a 2014 Silverado?
DIY repairs may involve checking and topping up the transmission fluid, inspecting and cleaning electrical connections to the transmission, or replacing faulty solenoids or sensors.
7. Should I seek professional help for fixing the P0734 code in my Chevrolet Silverado?
If you are not experienced with transmission repairs, it is advisable to consult a qualified mechanic or transmission specialist to accurately diagnose and address the underlying issue causing the P0734 code.
8. How much does it typically cost to repair P0734 in a 2014 Silverado?
The cost of repairs can vary depending on the specific cause of the code, but it may range from a few hundred to over a thousand dollars, including parts and labor.
9. Can resetting the OBDII system clear the P0734 code temporarily?
Resetting the system may temporarily clear the code, but if the underlying issue causing the incorrect gear ratio is not addressed, the code is likely to reappear once the problem resurfaces.
10. Is it safe to continue driving my Silverado with the P0734 code until I can address the issue?
It is not recommended to drive the vehicle extensively with the P0734 code present, as it can lead to further damage to the transmission. It's best to address the issue promptly to avoid more severe problems.
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