AutoCodes – GMC – P1762 2017 GMC Sierra

P1762 2017 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 2017 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 245

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 Aug 29, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1762 2017 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 2017 GMC Sierra - Transmission Mode Switch Signal Message - AutoCodes.com — P1762 2017 GMC Sierra Code - Transmission Mode Switch Signal Message

What does this mean?

What are the Possible Causes of the DTC P1762 2017 GMC Sierra?

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

How to Fix the DTC P1762 2017 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 2017 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 2017 GMC Sierra code?

Need more information on how to fix the P1762 2017 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 2017 GMC Sierra Code

1. What are the common symptoms of OBDII code P1762 in a 2017 GMC Sierra?

The common symptoms of code P1762 include difficulty shifting gears, transmission slipping, and the transmission staying in a single gear.

2. What could cause the OBDII code P1762 in a 2017 GMC Sierra?

The code P1762 is typically triggered by a faulty transmission mode switch, damaged wiring in the transmission mode switch circuit, or a defective transmission control module.

3. How serious is OBDII code P1762 in a 2017 GMC Sierra?

Code P1762 should be addressed promptly as it can lead to further transmission issues if left unresolved. Ignoring this code may result in transmission failure and potentially costly repairs.

4. Can I continue driving my 2017 GMC Sierra with OBDII code P1762?

It is not recommended to continue driving your vehicle with code P1762 present, as it can cause further damage to the transmission. It is best to have the issue diagnosed and repaired as soon as possible.

5. How can I diagnose and repair OBDII code P1762 in my 2017 GMC Sierra?

Diagnosing code P1762 involves using a scan tool to retrieve the code and testing the transmission mode switch and related wiring for faults. Repair typically involves replacing the faulty transmission mode switch or repairing any damaged wiring.

6. Will resetting the OBDII code P1762 in my 2017 GMC Sierra fix the issue?

Simply resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing code P1762. It is important to diagnose and repair the root cause to prevent the code from reoccurring.

7. How much does it cost to repair OBDII code P1762 in a 2017 GMC Sierra?

The cost of repairing code P1762 can vary depending on the cause of the issue, the extent of the repair needed, and labor rates in your area. It is recommended to consult with a qualified mechanic for an accurate estimate.

8. Can a DIY enthusiast fix OBDII code P1762 in a 2017 GMC Sierra?

While some DIY enthusiasts may have the skills to diagnose and repair code P1762, it is a complex transmission-related issue that may require specialized tools and expertise. If you are not experienced in transmission repairs, it is best to seek professional help.

9. How long does it take to repair OBDII code P1762 in a 2017 GMC Sierra?

The repair time for code P1762 can vary depending on the extent of the issue and the availability of parts. In general, it may take a few hours to a full day to diagnose and repair the problem.

10. Can OBDII code P1762 cause other issues in a 2017 GMC Sierra?

Code P1762 primarily affects the transmission mode switch signal message, but if left unresolved, it can lead to more severe transmission problems such as gear slippage, harsh shifting, or complete transmission failure.