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P0732 2014 GMC Sierra Code - Transmission 2nd Gear Ratio Incorrect

Quick Answer

The P0732 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates that the transmission is experiencing an issue with the 2nd gear ratio being incorrect. Common causes include Low transmission fluid levels or dirty fluid, Faulty shift solenoid, Worn or damaged transmission gears. 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
P0732 2014 GMC Sierra indicates Transmission 2nd Gear Ratio Incorrect.
Common causes
Common causes include Low transmission fluid levels or dirty fluid, Faulty shift solenoid, Worn or damaged transmission gears.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 16, 2024
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Code P0732 2014 GMC Sierra Description

The P0732 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates that the transmission is experiencing an issue with the 2nd gear ratio being incorrect. This means that the transmission is not shifting into 2nd gear properly, which can lead to a variety of performance issues. When the transmission is unable to engage the correct gear ratio, it can result in poor acceleration, reduced fuel efficiency, harsh shifting, and overall diminished driving experience.

OBDII Code P0732 2014 GMC Sierra - Transmission 2nd Gear Ratio Incorrect
P0732 2014 GMC Sierra Code - Transmission 2nd Gear Ratio Incorrect

Common Causes of P0732 2014 GMC Sierra

  1. Low transmission fluid levels or dirty fluid
  2. Faulty shift solenoid
  3. Worn or damaged transmission gears
  4. Malfunctioning clutch pack
  5. Electrical issues within the transmission control module

Symptoms of P0732 2014 GMC Sierra

  1. Delayed or harsh shifting between gears
  2. Slipping or jerking sensations during acceleration
  3. Decreased fuel efficiency
  4. Illumination of the Check Engine Light
  5. Transmission overheating

How to Fix P0732 2014 GMC Sierra

  1. Begin by checking the transmission fluid level and condition. If low or dirty, perform a transmission fluid flush and refill.
  2. Inspect the shift solenoid for any signs of damage or malfunction. Replace if necessary.
  3. Conduct a thorough inspection of the transmission gears and clutch pack. Replace any worn or damaged components.
  4. Scan the vehicle's computer system for any stored fault codes and perform a reset to clear the code.
  5. Test drive the vehicle to ensure proper shifting and functionality of the transmission.

Cost to Fix P0732 2014 GMC Sierra

The typical repair costs for addressing a P0732 code in a 2014 GMC Sierra can vary depending on the specific cause of the issue. On average, the repair costs for this type of transmission problem can range from $500 to $1500, including parts and labor. It is important to note that diagnosis time and labor rates at auto repair shops can vary, so it is recommended to obtain quotes from multiple sources to ensure a fair price. Additionally, the cost may be higher if more extensive repairs are needed to resolve the underlying transmission issue.

What does this mean?

Tech Notes for P0732 2014 GMC Sierra

Incorrect ratio Diagnostic Trouble Code (DTC) may indicate a component condition with piston seals, clutch plates, or solenoids or it may be caused by a faulty turbine or output speed sensor signal.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0732 2014 GMC Sierra Code

1. What does the OBDII code P0732 mean on a 2014 GMC Sierra?

P0732 indicates that the transmission control module (TCM) has detected an incorrect gear ratio in 2nd gear, which means the actual RPM does not match the expected RPM for that gear.

2. What are the common symptoms of code P0732 in a 2014 GMC Sierra?

Symptoms may include poor acceleration, slipping in 2nd gear, harsh shifting, reduced fuel efficiency, the check engine light turning on, and the vehicle going into limp mode.

3. What causes the P0732 code to appear in a 2014 GMC Sierra?

Common causes include low or dirty transmission fluid, malfunctioning shift solenoids, worn or damaged transmission bands or clutches, a faulty transmission control module, or internal transmission damage.

4. Can low transmission fluid cause the P0732 code?

Yes, low or contaminated transmission fluid can lead to improper hydraulic pressure, causing the transmission to fail to maintain the correct gear ratio.

5. How do I diagnose the P0732 code on my 2014 GMC Sierra?

Begin by checking the transmission fluid level and condition. Use an OBDII scanner to confirm the code and observe live data for gear ratios. If needed, inspect the shift solenoids, wiring, and internal transmission components.

6. Can I still drive my 2014 GMC Sierra with a P0732 code?

It is not recommended to drive with this code, as continued operation can cause further damage to the transmission, potentially leading to costly repairs.

7. How much does it cost to fix the P0732 code on a 2014 GMC Sierra?

Repair costs vary depending on the issue. Replacing transmission fluid and filters may cost $100-$250, while repairing solenoids or internal transmission parts could cost $500-$3,000 or more.

8. How can I prevent the P0732 code from occurring in my 2014 GMC Sierra?

Regular maintenance, such as checking and replacing transmission fluid, avoiding towing beyond the vehicle's capacity, and promptly addressing transmission issues, can help prevent this code.

9. Will resetting the check engine light fix the P0732 code?

Simply resetting the light will not fix the underlying problem. The issue causing the incorrect gear ratio must be identified and repaired to resolve the code.

10. Can a faulty shift solenoid trigger the P0732 code in a 2014 GMC Sierra?

Yes, a malfunctioning shift solenoid can prevent the transmission from properly engaging 2nd gear, leading to an incorrect gear ratio and triggering the P0732 code.

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