AutoCodes – GMC – B3177 GMC

B3177 GMC Code - Right Front Window Down Switch Circuit Low

Quick Answer

This Diagnostic Trouble Code (DTC) is generated by a passenger door window switch or a passenger door window switch circuit. Common causes include Faulty Right Front Window Switch, Right Front Window Switch harness is open or shorted, Right Front Window Switch circuit poor electrical connection. 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: B3177 GMC indicates Right Front Window Down Switch Circuit Low.
Common causes: Common causes include Faulty Right Front Window Switch, Right Front Window Switch harness is open or shorted, Right Front Window Switch circuit poor electrical connection.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 463

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 04, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B3177 GMC Description

This Diagnostic Trouble Code (DTC) is generated by a passenger door window switch or a passenger door window switch circuit. Each passenger door window switch is mounted to the trim panel of the appropriate passenger door. The circuits and contacts of each passenger door window switch receive battery voltage and ground from the corresponding door module, i.e. Front Passenger Door Module (PDM), Left Rear Door Module (LRDM), or Right Rear Door Module (RRDM). When a passenger door window switch is operated, the switch contacts close and the associated door module interprets the flow of voltage as a specific request to move the window up or down. If conditions are correct for window operation to occur, the door module then powers the associated window motor and circuits to move the window.

OBDII Code B3177 GMC - Right Front Window Down Switch Circuit Low - AutoCodes.com — B3177 GMC Code - Right Front Window Down Switch Circuit Low

What does this mean?

What are the Possible Causes of the DTC B3177 GMC?

Faulty Right Front Window Switch
Right Front Window Switch harness is open or shorted
Right Front Window Switch circuit poor electrical connection
Faulty Front Passenger Door Module (PDM)

How to Fix the DTC B3177 GMC?

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B3177 GMC 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.

Need more information about the B3177 GMC code?

Need more information on how to fix the B3177 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B3177 GMC 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 B3177 GMC Code

1. What are the common symptoms of OBDII code B3177 GMC (Right Front Window Down Switch Circuit Low)?

- The common symptoms include the right front window being inoperative or stuck in the down position, along with potential issues with the power window switch.

2. What are the possible causes of OBDII code B3177 GMC?

- The code B3177 GMC may be caused by a faulty right front window switch, damaged wiring in the circuit, or a malfunction in the power window control module.

3. How can I diagnose the cause of OBDII code B3177 GMC?

- To diagnose the code B3177 GMC, you can perform a visual inspection of the wiring and connectors, test the right front window switch for proper function, and use a scan tool to check for any related trouble codes.

4. Is it safe to continue driving with OBDII code B3177 GMC active?

- It is not recommended to continue driving with the code B3177 GMC active, as it can lead to further issues with the right front window operation and potentially other electrical components in the vehicle.

5. Can I repair OBDII code B3177 GMC on my own?

- Depending on your mechanical skill level, you may be able to repair the code B3177 GMC on your own by replacing the faulty right front window switch, repairing damaged wiring, or addressing any issues with the power window control module.

6. How much does it typically cost to repair OBDII code B3177 GMC at a mechanic or dealership?

- The cost of repairing OBDII code B3177 GMC can vary depending on the specific cause of the issue, but it may range from $100 to $300 for parts and labor at a mechanic or dealership.

7. Are there any preventive measures to avoid OBDII code B3177 GMC in the future?

- To prevent OBDII code B3177 GMC in the future, you can regularly inspect the condition of your vehicle's power window switches, wiring, and control modules, and address any issues promptly to avoid potential malfunctions.

8. Will resetting the OBDII system clear the B3177 GMC code?

- Resetting the OBDII system may temporarily clear the B3177 GMC code, but if the underlying issue causing the code is not addressed, it is likely to reappear once the system detects the problem again.

9. Can a weak car battery cause OBDII code B3177 GMC to trigger?

- A weak car battery may not directly cause OBDII code B3177 GMC, but it can lead to electrical issues that may contribute to the malfunction of the right front window switch circuit.

10. Is OBDII code B3177 GMC a common issue in GMC vehicles?

- OBDII code B3177 GMC (Right Front Window Down Switch Circuit Low) is a relatively common issue in GMC vehicles, particularly in models with power windows and electronic control systems.