P0733 2018 Chevrolet Silverado Code - Transmission 3rd Gear Ratio Incorrect
Quick Answer
The P0733 diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates that the transmission's third gear ratio is incorrect. Common causes include Low transmission fluid levels, Worn or damaged transmission components, Faulty solenoids. 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 2018 Chevrolet Silverado indicates Transmission 3rd Gear Ratio Incorrect.
- Common causes
- Common causes include Low transmission fluid levels, Worn or damaged transmission components, Faulty solenoids.
- 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 P0733 2018 Chevrolet Silverado Description
The P0733 diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates that the transmission's third gear ratio is incorrect. This means that there is a discrepancy between the rotational speed of the input shaft and the output shaft in third gear. When the transmission control module (TCM) detects this issue, it triggers the check engine light to alert the driver.
Common Causes of P0733 2018 Chevrolet Silverado
- Low transmission fluid levels
- Worn or damaged transmission components
- Faulty solenoids
- Issues with the transmission control module (TCM)
- Electrical problems in the transmission system
Symptoms of P0733 2018 Chevrolet Silverado
- Harsh or delayed shifting between gears
- Slipping or flaring of the transmission in third gear
- Decreased fuel efficiency
- Check engine light illuminated
- Transmission overheating
How to Fix P0733 2018 Chevrolet Silverado
- Check and top up transmission fluid levels to the correct specification.
- Perform a thorough inspection of the transmission components for wear or damage and replace as necessary.
- Test and replace faulty solenoids if identified as the cause.
- Diagnose and address any issues with the TCM, such as reprogramming or replacing the module.
- Clear the DTC and test drive the vehicle to ensure proper operation of the transmission.
Cost to Fix P0733 2018 Chevrolet Silverado
The cost of repairing a P0733 code on a 2018 Chevrolet Silverado can vary depending on the specific cause of the issue. On average, the repair costs for this type of transmission problem can range from $200 to $800, including parts and labor. However, it's important to note that prices can fluctuate based on the location of the repair shop, the vehicle's make and model, and the extent of the repairs needed. It's recommended to obtain quotes from multiple shops to compare prices and ensure a fair estimate.
Tech Notes for P0733 2018 Chevrolet Silverado
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Frequently Asked Questions about P0733 2018 Chevrolet Silverado Code
1. What does the OBDII code P0733 mean on a 2018 Chevrolet Silverado?
P0733 indicates that the Powertrain Control Module (PCM) has detected an incorrect gear ratio in 3rd gear, meaning the transmission is not performing as expected in that gear.
2. What are common symptoms of the P0733 code on a 2018 Chevrolet Silverado?
Common symptoms include slipping in 3rd gear, harsh or delayed shifting, poor acceleration, decreased fuel efficiency, and the Check Engine Light being illuminated.
3. What causes the P0733 code on a 2018 Chevrolet Silverado?
Possible causes include low transmission fluid, a faulty shift solenoid, worn or damaged transmission components (like clutches or bands), or a malfunctioning PCM.
4. Can low transmission fluid cause a P0733 code on my Silverado?
Yes, low or contaminated transmission fluid can result in improper hydraulic pressure, leading to the incorrect gear ratio and triggering the P0733 code.
5. How can I fix the P0733 code on my 2018 Chevrolet Silverado?
Repairs may involve checking and topping off transmission fluid, replacing a faulty shift solenoid, repairing internal transmission damage, or reprogramming or replacing the PCM.
6. Is it safe to drive my 2018 Chevrolet Silverado with a P0733 code?
Driving with a P0733 code is not recommended, as it may cause further damage to the transmission and lead to more expensive repairs.
7. How do I diagnose the P0733 code on my Silverado?
Diagnosis typically includes checking transmission fluid levels, scanning for additional codes, inspecting the shift solenoids, testing the transmission hydraulic pressure, and possibly inspecting internal transmission components.
8. Can a faulty PCM cause the P0733 code in a 2018 Chevrolet Silverado?
Yes, a malfunctioning PCM can send incorrect signals to the transmission, resulting in improper gear ratios and the P0733 code.
9. How much does it cost to repair a P0733 code on a 2018 Chevrolet Silverado?
Repair costs vary depending on the issue, ranging from around $100 for a fluid change to over $2,000 if a transmission rebuild or replacement is needed.
10. Will clearing the P0733 code fix the problem on my Silverado?
No, clearing the code will only turn off the warning temporarily. The underlying issue causing the code must be addressed to prevent it from returning.
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