P0733 2016 GMC Sierra 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 GMC Sierra 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 GMC Sierra 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 GMC Sierra?
- Low transmission fluid level
- Shift solenoid mechanical fault
- Faulty Turbine Sensor
- Faulty Output Speed Sensor
How to Fix the DTC P0733 2016 GMC Sierra?
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 GMC Sierra 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 GMC Sierra Code
1. What are the common symptoms of OBDII code P0733 in a 2016 GMC Sierra?
The common symptoms of OBDII code P0733 in a 2016 GMC Sierra include harsh shifting, slipping gears, hesitation during acceleration, and illuminated warning lights on the dashboard.
2. What does the OBDII code P0733 indicate in a 2016 GMC Sierra?
OBDII code P0733 in a 2016 GMC Sierra indicates that the powertrain control module (PCM) has detected an incorrect ratio for the transmission's third gear.
3. What are some possible causes of OBDII code P0733 in a 2016 GMC Sierra?
Possible causes of OBDII code P0733 in a 2016 GMC Sierra include low transmission fluid, a faulty transmission solenoid, a worn-out clutch, a malfunctioning torque converter, or internal transmission damage.
4. How can I diagnose the root cause of OBDII code P0733 in my 2016 GMC Sierra?
Diagnosing the root cause of OBDII code P0733 in a 2016 GMC Sierra may involve performing a transmission fluid level and condition check, conducting a thorough inspection of the transmission system, and using a professional diagnostic scanner to retrieve live data from the PCM.
5. Can I continue driving my 2016 GMC Sierra with OBDII code P0733?
It is not recommended to continue driving a 2016 GMC Sierra with OBDII code P0733, as it can lead to further damage to the transmission system and potentially result in costly repairs. It is advisable to address the issue promptly.
6. How can OBDII code P0733 in a 2016 GMC Sierra be repaired?
Repairing OBDII code P0733 in a 2016 GMC Sierra may involve addressing the root cause of the issue, which could include topping up or changing the transmission fluid, replacing faulty components like solenoids or clutches, or seeking professional help for more complex repairs.
7. Is it possible to reset OBDII code P0733 in a 2016 GMC Sierra without fixing the underlying issue?
Resetting OBDII code P0733 in a 2016 GMC Sierra without fixing the underlying issue may temporarily turn off the warning light, but the problem will likely reoccur. It is crucial to address the root cause of the code for a lasting solution.
8. Can a DIY enthusiast fix OBDII code P0733 in a 2016 GMC Sierra?
While some basic checks and maintenance tasks can be performed by a DIY enthusiast, diagnosing and repairing OBDII code P0733 in a 2016 GMC Sierra often requires specialized tools, technical knowledge, and experience. It is advisable to seek professional help for complex transmission issues.
9. How much does it typically cost to repair OBDII code P0733 in a 2016 GMC Sierra?
The cost of repairing OBDII code P0733 in a 2016 GMC Sierra can vary depending on the root cause of the issue, the extent of the damage, and the labor rates in your area. It is recommended to obtain quotes from reputable mechanics or dealerships for an accurate estimate.
10. Can regular maintenance help prevent OBDII code P0733 in a 2016 GMC Sierra?
Regular maintenance, such as timely transmission fluid changes, inspections, and addressing any minor issues promptly, can help prevent OBDII code P0733 in a 2016 GMC Sierra. Following the manufacturer's recommended maintenance schedule is key to keeping the transmission system in good condition.
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