P0733 2016 Chevrolet Silverado Code - Transmission 3rd 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
- P0733 2016 Chevrolet Silverado indicates Transmission 3rd 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 P0733 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 3rd gear commanded differs from the known 6th gear ratio for 2 s.
What are the Possible Causes of the DTC P0733 2016 Chevrolet Silverado?
- Low transmission fluid level
- Shift solenoid mechanical fault
- Faulty Turbine Sensor
- Faulty Output Speed Sensor
How to Fix the DTC P0733 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 P0733 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 P0733 2016 Chevrolet Silverado Code
1. What does the OBDII code P0733 mean for a 2016 Chevrolet Silverado?
P0733 indicates that the transmission is experiencing an incorrect gear ratio in 3rd gear, which can result from mechanical or electrical issues.
2. What are common symptoms of code P0733 in a 2016 Chevy Silverado?
Symptoms may include slipping in 3rd gear, harsh shifting, reduced acceleration, poor fuel economy, and the check engine light turning on.
3. What causes the P0733 code to appear?
Common causes include low transmission fluid, worn clutches or bands, a faulty shift solenoid, damaged transmission components, or a malfunctioning transmission control module (TCM).
4. Can low transmission fluid trigger the P0733 code?
Yes, insufficient or contaminated transmission fluid can cause gear ratio issues, including code P0733.
5. How is code P0733 diagnosed?
A mechanic will use a scan tool to verify the code, check transmission fluid levels, inspect wiring and solenoids, and perform tests to assess internal transmission components.
6. Can driving with code P0733 damage my Silverado's transmission?
Yes, continuing to drive with this code can worsen transmission wear and lead to costly repairs if not addressed promptly.
7. What repairs might fix the P0733 code?
Repairs may include replacing or refilling transmission fluid, repairing or replacing shift solenoids, fixing wiring issues, or rebuilding the transmission.
8. How much does it typically cost to fix the P0733 code on a 2016 Chevrolet Silverado?
Costs vary widely depending on the cause, ranging from $100 for fluid changes to several thousand dollars for a transmission rebuild.
9. Can a faulty transmission control module cause the P0733 code?
Yes, if the TCM fails to properly manage gear shifts, it can result in an incorrect gear ratio and trigger the P0733 code.
10. Is it safe to drive with the P0733 code active?
It’s not recommended to drive for extended periods with this code active, as it can lead to further transmission damage and unsafe driving conditions.
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