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P0742 2016 Chevrolet Silverado Code - Torque Converter Clutch System Stuck On Or Transmission Hydraulic/Mechanical Performance

Quick Answer

The P0742 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado refers to an issue with the Torque Converter Clutch (TCC) system being stuck on or a problem with the transmission's hydraulic or mechanical performance. Common causes include Faulty torque converter clutch solenoid, Malfunctioning TCC valve, Low transmission fluid levels. 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
P0742 2016 Chevrolet Silverado indicates Torque Converter Clutch System Stuck On Or Transmission Hydraulic/Mechanical Performance.
Common causes
Common causes include Faulty torque converter clutch solenoid, Malfunctioning TCC valve, Low transmission fluid levels.
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 17, 2024
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Code P0742 2016 Chevrolet Silverado Description

The P0742 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado refers to an issue with the Torque Converter Clutch (TCC) system being stuck on or a problem with the transmission's hydraulic or mechanical performance. The torque converter clutch is an essential component of the automatic transmission system, responsible for connecting the engine to the transmission and improving fuel efficiency by reducing slippage. When the TCC system is stuck on or there are hydraulic/mechanical performance issues, it can lead to various problems with the vehicle's drivability and overall performance.

OBDII Code P0742 2016 Chevrolet Silverado - Torque Converter Clutch System Stuck On Or Transmission Hydraulic/Mechanical Performance
P0742 2016 Chevrolet Silverado Code - Torque Converter Clutch System Stuck On Or Transmission Hydraulic/Mechanical Performance

Common Causes of P0742 2016 Chevrolet Silverado

  1. Faulty torque converter clutch solenoid
  2. Malfunctioning TCC valve
  3. Low transmission fluid levels
  4. Internal transmission damage

Symptoms of P0742 2016 Chevrolet Silverado

  1. Decreased fuel efficiency
  2. Rough or harsh shifting
  3. Engine stalling at idle
  4. Increased engine temperature

How to Fix P0742 2016 Chevrolet Silverado

  1. Perform a thorough diagnostic scan to confirm the P0742 code and identify the specific cause of the issue.
  2. Inspect the torque converter clutch solenoid and TCC valve for any signs of damage or malfunction.
  3. Check the transmission fluid level and quality, topping up or replacing it if necessary.
  4. If internal transmission damage is suspected, a professional transmission rebuild or replacement may be required.
  5. Clear the DTC and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P0742 2016 Chevrolet Silverado

The typical repair costs for addressing a P0742 code on a 2016 Chevrolet Silverado can vary depending on the specific cause of the issue and the extent of the repairs needed. On average, the repair costs for this type of transmission-related problem can range from $300 to $800, including parts and labor. However, it is important to note that the actual cost may be higher or lower based on factors such as the location of the repair shop, the vehicle's make and model, and the type of engine. Additionally, diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. It is recommended to obtain a detailed estimate from a trusted mechanic or repair shop to determine the precise cost of addressing the P0742 code on a 2016 Chevrolet Silverado.

What does this mean?

Tech Notes for P0742 2016 Chevrolet Silverado

When a transmission solenoid is stuck on, in most cases the problem is not the electrical part of the solenoid; the problem is foreign material obstructing the mechanical function of the solenoid or the flow of the fluid through the transmission valve body. If the transmission fluid is very dirty, it is recommended to change the transmission fluid and if possible, remove the transmission pan for further diagnosis. Excessive debris or metal particles on the transmission pan could be an indication that there is a transmission mechanical failure, and that the transmission will need to be rebuilt or replaced.

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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 P0742 2016 Chevrolet Silverado Code

1. What does the OBDII code P0742 mean on a 2016 Chevrolet Silverado?

P0742 indicates that the torque converter clutch (TCC) system is stuck on or there’s an issue with the transmission’s hydraulic or mechanical performance.

2. What are the common symptoms of code P0742 in a 2016 Chevrolet Silverado?

Symptoms may include a drop in fuel efficiency, stalling at low speeds, harsh shifting, transmission overheating, or the check engine light illuminating.

3. What causes the P0742 code to appear on a 2016 Chevrolet Silverado?

Common causes include a faulty torque converter clutch solenoid, transmission fluid issues (low, dirty, or burnt), internal transmission problems, or electrical wiring faults.

4. Can I drive my 2016 Chevrolet Silverado with a P0742 code?

While the truck may still drive, continuing to operate it with this code can cause further damage to the transmission and should be addressed promptly.

5. How can I fix the P0742 code on my 2016 Chevrolet Silverado?

Repairs may involve replacing the TCC solenoid, performing a transmission fluid flush, repairing damaged wiring, or addressing internal transmission issues.

6. How do I diagnose the P0742 code on a 2016 Chevrolet Silverado?

Diagnosis typically includes scanning for codes, inspecting the transmission fluid, testing the TCC solenoid, and checking the electrical wiring and connectors.

7. How much does it cost to fix the P0742 code on a 2016 Chevrolet Silverado?

Costs can vary widely, ranging from $150 for a solenoid replacement to over $2,000 for major transmission repairs, depending on the root cause.

8. What transmission fluid should I use to prevent the P0742 code in a 2016 Chevrolet Silverado?

Use DEXRON VI transmission fluid, as specified in the owner’s manual, and maintain proper fluid levels to prevent issues.

9. Can a bad torque converter cause the P0742 code in a 2016 Chevrolet Silverado?

Yes, a malfunctioning torque converter can cause the TCC to stay engaged, triggering the P0742 code.

10. Will resetting the check engine light fix the P0742 code on a 2016 Chevrolet Silverado?

Resetting the light will not fix the underlying issue; proper diagnosis and repair are required to resolve the code.

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