AutoCodes – GMC – B3392 GMC

B3392 GMC Code - Right Front Window Down Switch Circuit Low

Quick Answer

The window switch or window switch circuits that generate this Diagnostic Trouble Code (DTC) are built-in parts of the Driver Door Switch Assembly (DDSA). Common causes include Faulty Driver Door Switch Assembly (DDSA), Driver Door Switch Assembly (DDSA) harness is open or shorted, Driver Door Switch Assembly (DDSA) 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: B3392 GMC indicates Right Front Window Down Switch Circuit Low.
Common causes: Common causes include Faulty Driver Door Switch Assembly (DDSA), Driver Door Switch Assembly (DDSA) harness is open or shorted, Driver Door Switch Assembly (DDSA) 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.

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Code Popularity 577

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Mar 06, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3392 GMC Description

The window switch or window switch circuits that generate this Diagnostic Trouble Code (DTC) are built-in parts of the Driver Door Switch Assembly (DDSA). There are no external circuits. The DDSA internally supplies power and ground to the contacts of each of the integral window switches. When one of the switches is operated, the switch contacts close, providing the DDSA with a specific window switch signal. The DDSA processes this signal, assigns a digital message to it, and sends the message to the appropriate Driver Door Module (DDM), Passenger Front Door Module (PDM), Left Rear Door Module (LRDM), or Right Rear Door Module (RRDM), via the class 2 serial data circuit. The door module, upon receiving the message, examines other relevant information available on the class 2 serial data line in order to determine if conditions are correct for window operation to occur. If conditions are correct, the door module applies power and ground to the associated window motor and circuits in order to move the window. If the DDSA determines that one of its built in window switches is closed for more than 15 continuous seconds, it sets the DTC.

OBDII Code B3392 GMC - Right Front Window Down Switch Circuit Low - AutoCodes.com — B3392 GMC Code - Right Front Window Down Switch Circuit Low

What does this mean?

What are the Possible Causes of the DTC B3392 GMC?

Faulty Driver Door Switch Assembly (DDSA)
Driver Door Switch Assembly (DDSA) harness is open or shorted
Driver Door Switch Assembly (DDSA) circuit poor electrical connection
Faulty Passenger Front Door Module (PDM)
Faulty Driver Door Module (DDM)

How to Fix the DTC B3392 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 B3392 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.

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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 B3392 GMC Code

1. What does the OBDII code B3392 mean for a GMC vehicle?

The B3392 code indicates a problem with the right front window down switch circuit, specifically detecting a low voltage condition.

2. What are common symptoms of the B3392 code in GMC vehicles?

Symptoms include the right front window not rolling down, intermittent window operation, or no response when pressing the window switch.

3. What causes the B3392 code to appear in GMC vehicles?

Common causes include a faulty window switch, damaged wiring or connectors, a failed motor, or an issue with the body control module (BCM).

4. Can a weak battery cause the B3392 code?

Yes, a weak or failing battery can cause voltage irregularities, potentially triggering this code.

5. How can I diagnose the B3392 code in my GMC?

Start by inspecting the window switch, wiring, and connectors for damage. Use a multimeter to check for proper voltage and continuity in the circuit.

6. Is it safe to drive with the B3392 code active?

Yes, it's generally safe to drive, but the affected window may not function properly, which could be inconvenient or pose a safety concern in emergencies.

7. How do I fix the B3392 code in a GMC vehicle?

Repairs may involve replacing the window switch, repairing damaged wiring, cleaning corroded connectors, or reprogramming the BCM if necessary.

8. Can the B3392 code clear itself after repairs?

The code may clear automatically after the issue is resolved, but you may need to manually clear it with an OBDII scanner.

9. How much does it cost to fix the B3392 code?

Repair costs can vary, but replacing a window switch typically costs $50â€“$200, while wiring repairs or BCM replacements could cost more.

10. Can I fix the B3392 code on my own?

If you have basic automotive knowledge and the right tools, such as a multimeter and OBDII scanner, you may be able to diagnose and fix the issue yourself.