P0734 2016 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 2016 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 2016 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 2016 Chevrolet Silverado?
- Low transmission fluid level
- Shift solenoid mechanical fault
- Faulty Turbine Sensor
- Faulty Output Speed Sensor
How to Fix the DTC P0734 2016 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 2016 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 2016 Chevrolet Silverado Code
1. What does the OBDII code P0734 mean for a 2016 Chevrolet Silverado?
P0734 indicates that the transmission control module has detected an incorrect gear ratio for 4th gear, meaning the actual gear ratio doesn't match the expected value.
2. What are common symptoms of the P0734 code in a 2016 Chevrolet Silverado?
Symptoms include transmission slipping, trouble shifting into or staying in 4th gear, reduced fuel efficiency, and the check engine light turning on.
3. What causes the P0734 code in a 2016 Chevrolet Silverado?
Common causes include low transmission fluid, a malfunctioning shift solenoid, a worn or damaged clutch pack, or internal transmission damage.
4. Can driving with the P0734 code damage my 2016 Chevrolet Silverado?
Yes, driving with this code can cause further damage to the transmission if the issue is not addressed promptly.
5. How do I diagnose the P0734 code on my 2016 Chevrolet Silverado?
Diagnosis typically involves checking the transmission fluid level and condition, scanning for additional codes, inspecting the shift solenoids, and performing a transmission pressure test.
6. How is the P0734 code fixed on a 2016 Chevrolet Silverado?
Repairs may include topping off or replacing the transmission fluid, replacing a faulty shift solenoid, repairing or rebuilding the transmission, or updating the transmission control module software.
7. Can low transmission fluid cause the P0734 code in my 2016 Chevrolet Silverado?
Yes, low or contaminated transmission fluid can lead to improper gear ratios and trigger the P0734 code.
8. How much does it cost to fix the P0734 code on a 2016 Chevrolet Silverado?
Repair costs vary depending on the issue, ranging from $100 to $300 for fluid and solenoid replacements to $1,500 or more for a transmission rebuild.
9. Can a bad transmission control module cause the P0734 code?
Yes, a malfunctioning transmission control module may fail to properly regulate gear ratios, causing the P0734 code.
10. Is the P0734 code a serious issue for my 2016 Chevrolet Silverado?
Yes, it is a serious issue that should be addressed as soon as possible to avoid further damage to the transmission.
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