AutoCodes – GMC – B3605 GMC

B3605 GMC Code - Adjustable Pedal Rearward Switch Circuit Protection Time-Out

Quick Answer

Ground is supplied at all times to the adjustable pedal switch. Common causes include Faulty Adjustable Pedal Forward Switch, Adjustable Pedal Forward Switch harness is open or shorted, Adjustable Pedal Forward 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: B3605 GMC indicates Adjustable Pedal Rearward Switch Circuit Protection Time-Out.
Common causes: Common causes include Faulty Adjustable Pedal Forward Switch, Adjustable Pedal Forward Switch harness is open or shorted, Adjustable Pedal Forward 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.

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Code Popularity 544

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 Jun 14, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3605 GMC Description

Ground is supplied at all times to the adjustable pedal switch. The adjustable pedal forward and rearward switches are inputs to the seat memory control module. When the switch is operated to the forward or rearward direction, it supplies a ground path for the signal inputs from the seat memory control module. The seat memory control module then commands the adjustable pedals motor to move in response to the switch signal. The Diagnostic Trouble Code (DTC) will be set when the seat memory control module detects a short to ground in the rearward signal circuit for greater than 60 s.

OBDII Code B3605 GMC - Adjustable Pedal Rearward Switch Circuit Protection Time-Out - AutoCodes.com — B3605 GMC Code - Adjustable Pedal Rearward Switch Circuit Protection Time-Out

What does this mean?

What are the Possible Causes of the DTC B3605 GMC?

Faulty Adjustable Pedal Forward Switch
Adjustable Pedal Forward Switch harness is open or shorted
Adjustable Pedal Forward Switch circuit poor electrical connection
Faulty Driver Seat Memory Control Module

How to Fix the DTC B3605 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 B3605 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 B3605 GMC code?

Need more information on how to fix the B3605 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B3605 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

B3605 2014 GMC Sierra — Adjustable Pedal Rearward Switch Circuit Protection Time-Out
B3605 2015 GMC Sierra — Adjustable Pedal Rearward Switch Circuit Protection Time-Out
B3605 2016 GMC Sierra — Adjustable Pedal Rearward Switch Circuit Protection Time-Out
B3605 2017 GMC Sierra — Adjustable Pedal Rearward Switch Circuit Protection Time-Out
B3605 2018 GMC Sierra — Adjustable Pedal Rearward Switch Circuit Protection Time-Out

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 B3605 GMC Code

What does OBDII code B3605 indicate in a GMC vehicle?

OBDII code B3605 indicates a problem with the adjustable pedal rearward switch circuit, specifically that the circuit has experienced a time-out condition, which means the system isn't functioning as intended.

What are the common symptoms of a B3605 code?

Common symptoms include the adjustable pedals not moving as expected, dashboard warning lights related to the pedal system, and potential issues with other related systems like cruise control.

What can cause the B3605 code to trigger?

Causes of the B3605 code can include a faulty adjustable pedal rearward switch, damaged wiring, poor electrical connections, or issues with the body control module (BCM) that manages the pedal system.

How can I diagnose the B3605 code?

To diagnose the B3605 code, use an OBDII scanner to confirm the code, inspect the adjustable pedal switch and its wiring for damage or corrosion, and test the switch for proper operation with a multimeter.

What repairs are recommended for a B3605 code?

Recommended repairs may include replacing a faulty adjustable pedal rearward switch, repairing damaged wiring or connectors, and reprogramming or replacing the body control module if necessary.

Can I drive my vehicle with the B3605 code?

While you can technically drive with the B3605 code, it is not advisable as it may affect the functionality of the adjustable pedals, which can impact your comfort and driving position.

Is there a way to reset the B3605 code?

Yes, you can reset the B3605 code using an OBDII scanner after addressing the underlying issue. However, if the problem persists, the code will likely reappear.

What should I do if the B3605 code keeps coming back?

If the B3605 code keeps returning, further diagnosis is needed. Check for intermittent wiring issues, review the repair history, and consider professional assistance for a thorough inspection.

Are there any recalls related to the B3605 code?

While there may not be recalls specifically for the B3605 code, itâ€™s advisable to check with your local GMC dealership for any recalls or service bulletins that may be relevant to your vehicle's adjustable pedal system.