AutoCodes – GMC – P1762 2014 GMC Sierra

P1762 2014 GMC Sierra Code - Transmission Mode Switch Signal Message

Quick Answer

The Body Control Module (BCM) is constantly sending the Engine Control Module (ECM) and Transmission Control Module (TCM) serial data messages with information regarding transmission mode switch activation. Common causes include Faulty Transmission Control Module (TCM), Faulty Body Control Module (BCM). 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: P1762 2014 GMC Sierra indicates Transmission Mode Switch Signal Message.
Common causes: Common causes include Faulty Transmission Control Module (TCM), Faulty Body Control Module (BCM).
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 189

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 Aug 29, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1762 2014 GMC Sierra Description

The Body Control Module (BCM) is constantly sending the Engine Control Module (ECM) and Transmission Control Module (TCM) serial data messages with information regarding transmission mode switch activation. The TCM sets this code when it detects a discrepancy in the structure of the message causing the signal message integrity to be questioned. The Diagnostic Trouble Code (DTC) is set when the TCM detects an error in the rolling count value that does not match with the BCM.

OBDII Code P1762 2014 GMC Sierra - Transmission Mode Switch Signal Message - AutoCodes.com — P1762 2014 GMC Sierra Code - Transmission Mode Switch Signal Message

What does this mean?

What are the Possible Causes of the DTC P1762 2014 GMC Sierra?

Faulty Transmission Control Module (TCM)
Faulty Body Control Module (BCM)

How to Fix the DTC P1762 2014 GMC Sierra?

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 P1762 2014 GMC Sierra 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 P1762 2014 GMC Sierra code?

Need more information on how to fix the P1762 2014 GMC Sierra code? Get Access to Factory Service Manuals

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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 P1762 2014 GMC Sierra Code

1. What does the OBDII code P1762 mean on a 2014 GMC Sierra?

P1762 indicates an issue with the Transmission Mode Switch Signal Message, often related to communication or electrical problems in the transmission control system.

2. What are the common symptoms of a P1762 code on a 2014 GMC Sierra?

Common symptoms include erratic shifting, the transmission stuck in one gear, an illuminated check engine light, and reduced engine or transmission performance.

3. What causes the P1762 code to appear on a 2014 GMC Sierra?

Potential causes include a faulty transmission mode switch, damaged wiring or connectors, software issues in the Transmission Control Module (TCM), or a communication failure between modules.

4. Can a failed transmission mode switch trigger the P1762 code?

Yes, a failed or malfunctioning transmission mode switch can prevent proper signal communication, triggering the P1762 code.

5. How do I diagnose the P1762 code on my 2014 GMC Sierra?

Diagnosis involves scanning for additional codes, inspecting the transmission mode switch and related wiring, testing the TCM for proper functionality, and checking for software updates.

6. Can I drive my 2014 GMC Sierra with the P1762 code active?

While it may be possible to drive, it is not recommended as it can lead to further transmission issues, poor performance, or potential damage.

7. How do I fix the P1762 code on a 2014 GMC Sierra?

Repairs may include replacing the transmission mode switch, repairing damaged wiring, updating TCM software, or recalibrating the transmission system.

8. Is a faulty TCM a possible cause of the P1762 code?

Yes, a malfunctioning Transmission Control Module can cause communication errors, leading to the P1762 code.

9. What tools are needed to troubleshoot the P1762 code on a 2014 GMC Sierra?

Youâ€™ll need an OBDII scanner, a multimeter for testing electrical connections, and possibly manufacturer-specific diagnostic tools for advanced troubleshooting.

10. How much does it cost to repair a P1762 code on a 2014 GMC Sierra?

Repair costs vary but may range from $100 to $500 or more, depending on whether the issue is with the switch, wiring, or TCM, and whether labor is required.