Engine-Codes.com
Engine-Codes – GMC – B133B 2017 GMC Sierra

B133B 2017 GMC Sierra Code - Reverse Gear Status Not Plausible

Quick Answer

The B133B diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates that the reverse gear status is not plausible. Common causes include Faulty reverse gear position sensor, Wiring issues or electrical connection problems, Malfunctioning transmission control module. 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
B133B 2017 GMC Sierra indicates Reverse Gear Status Not Plausible.
Common causes
Common causes include Faulty reverse gear position sensor, Wiring issues or electrical connection problems, Malfunctioning transmission control module.
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 14, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code B133B 2017 GMC Sierra Description

The B133B diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates that the reverse gear status is not plausible. This means that the vehicle's onboard computer system has detected an inconsistency or error in the signal related to the reverse gear position. This issue can affect the vehicle's performance by causing problems with shifting into or out of reverse gear, leading to difficulty in maneuvering the vehicle. It may also result in the inability to engage reverse gear altogether.

OBDII Code B133B 2017 GMC Sierra - Reverse Gear Status Not Plausible
B133B 2017 GMC Sierra Code - Reverse Gear Status Not Plausible

Common Causes of B133B 2017 GMC Sierra

  1. Faulty reverse gear position sensor
  2. Wiring issues or electrical connection problems
  3. Malfunctioning transmission control module
  4. Low transmission fluid level or contaminated fluid
  5. Mechanical issues within the transmission system

Symptoms of B133B 2017 GMC Sierra

  1. Difficulty shifting into or out of reverse gear
  2. Delayed engagement of reverse gear
  3. Inability to engage reverse gear
  4. Harsh or erratic shifting in reverse
  5. Dashboard warning light related to transmission system

How to Fix B133B 2017 GMC Sierra

  1. Diagnose the issue using a professional OBD-II scanner to retrieve the specific trouble code and pinpoint the exact cause of the problem.
  2. Inspect the reverse gear position sensor and its wiring for any damage or corrosion. Replace the sensor if necessary.
  3. Check the transmission control module for any faults or errors. Reset or reprogram the module as needed.
  4. Ensure the transmission fluid level is adequate and of the correct type. Perform a transmission fluid flush and refill if needed.
  5. Test drive the vehicle to verify that the issue has been resolved and that the reverse gear status is now functioning correctly.

Cost to Fix B133B 2017 GMC Sierra

The typical repair costs for addressing a B133B code on a 2017 GMC Sierra can vary depending on the specific cause of the issue. On average, the cost of parts and labor for this repair could range from $200 to $500. However, it's important to note that diagnosis time and labor rates at auto repair shops can vary significantly based on factors such as location, vehicle make and model, and engine type. It's recommended to check with local auto repair shops for a more accurate estimate.

Need more information about the B133B 2017 GMC Sierra code?

Need more information on how to fix the B133B 2017 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B133B 2017 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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 B133B 2017 GMC Sierra Code

1. What does OBDII code B133B on a 2017 GMC Sierra mean?

The code B133B indicates a "Reverse Gear Status Not Plausible" issue in the transmission system of a 2017 GMC Sierra.

2. What are some common symptoms of OBDII code B133B in a 2017 GMC Sierra?

Common symptoms of code B133B may include difficulty shifting into reverse gear, erratic shifting behavior, and potential transmission slippage.

3. What are the possible causes of OBDII code B133B in a 2017 GMC Sierra?

Potential causes of code B133B include faulty transmission sensors, wiring issues, software glitches, or a malfunctioning transmission control module.

4. How can I diagnose the OBDII code B133B on my 2017 GMC Sierra?

Diagnosing code B133B typically involves using a professional OBDII scanner to retrieve the specific error codes, conducting a visual inspection of wiring and connectors, and performing tests on transmission components.

5. Can I continue driving my 2017 GMC Sierra with OBDII code B133B?

It is not recommended to continue driving your GMC Sierra with code B133B, as unresolved transmission issues can lead to further damage and potentially unsafe driving conditions.

6. How can I clear the OBDII code B133B on my 2017 GMC Sierra?

Clearing the code B133B requires fixing the underlying issue causing the fault code to appear. Once the problem is resolved, you can clear the code using an OBDII scanner.

7. Is it safe to ignore OBDII code B133B in my 2017 GMC Sierra?

Ignoring code B133B can lead to more severe transmission problems over time. It is best to address the issue promptly to prevent further damage.

8. Are there any DIY repair tips for fixing OBDII code B133B in a 2017 GMC Sierra?

While basic checks like inspecting wiring connections can be done DIY, diagnosing and repairing complex transmission issues related to B133B may require professional help.

9. How much does it cost to repair OBDII code B133B in a 2017 GMC Sierra?

The cost of repairing code B133B can vary depending on the specific cause of the issue. It is recommended to get a diagnostic from a qualified mechanic to determine the exact repair cost.

10. Can a software update fix OBDII code B133B in a 2017 GMC Sierra?

In some cases, a software update from the dealership or a qualified mechanic may address the issue causing code B133B in a 2017 GMC Sierra.

Discuss the causes and fixes for B133B 2017 GMC Sierra OBDII Code

Submit a New Comment

Code B133B 2017 GMC Sierra comments

No comments found for this page.