P1762 2015 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 2015 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.
Code P1762 2015 GMC Sierra Description
What are the Possible Causes of the DTC P1762 2015 GMC Sierra?
- Faulty Transmission Control Module (TCM)
- Faulty Body Control Module (BCM)
How to Fix the DTC P1762 2015 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 2015 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.
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Frequently Asked Questions about P1762 2015 GMC Sierra Code
1. What does the OBDII code P1762 mean on a 2015 GMC Sierra?
P1762 indicates an issue with the transmission mode switch signal or its communication, typically related to the transmission control module (TCM).
2. What are the symptoms of code P1762 in a 2015 GMC Sierra?
Common symptoms include the transmission stuck in one gear, erratic shifting, the check engine light turning on, or reduced performance in towing or hauling modes.
3. What causes the P1762 code to appear in a 2015 GMC Sierra?
The code can be triggered by a faulty transmission mode switch, damaged wiring or connectors, a malfunctioning TCM, or software issues within the vehicle's control system.
4. How do I diagnose a P1762 code in my GMC Sierra?
Start by scanning the vehicle with an OBDII scanner, inspecting the transmission mode switch and its wiring for damage, and testing the TCM for proper function.
5. Can a bad transmission mode switch cause a P1762 code?
Yes, a failing or defective mode switch can result in improper signals being sent to the TCM, triggering the P1762 code.
6. Is it safe to drive my 2015 GMC Sierra with a P1762 code?
Driving with this code may lead to poor transmission performance and increased wear, so it’s best to address the issue promptly to avoid further damage.
7. How do I fix a P1762 code on a 2015 GMC Sierra?
Repairs may include replacing the transmission mode switch, repairing damaged wiring or connectors, or reprogramming or replacing the TCM.
8. Can a software update resolve the P1762 code on a GMC Sierra?
In some cases, a software update to the TCM may resolve the code if the issue is related to outdated programming.
9. How much does it cost to repair a P1762 code on a 2015 GMC Sierra?
Repair costs vary depending on the cause but typically range from $150 to $500, including parts and labor.
10. Can a dirty or corroded connector cause the P1762 code?
Yes, corrosion or debris on the connectors of the transmission mode switch or TCM can interrupt the signal and trigger the code.
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