AutoCodes – GMC – P17B0 2018 GMC Sierra

P17B0 2018 GMC Sierra Code - Transmission Range Control Module System Voltage Low

Quick Answer

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. Common causes include Faulty Transmission Range Control Module, Transmission Range Control Module harness is open or shorted, Transmission Range Control Module 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: P17B0 2018 GMC Sierra indicates Transmission Range Control Module System Voltage Low.
Common causes: Common causes include Faulty Transmission Range Control Module, Transmission Range Control Module harness is open or shorted, Transmission Range Control Module 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 269

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 Jul 04, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P17B0 2018 GMC Sierra Description

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. The Diagnostic Trouble Code (DTC) will be set when the Transmission Range Control Module detects a system voltage below or above a threshold.

OBDII Code P17B0 2018 GMC Sierra - Transmission Range Control Module System Voltage Low - AutoCodes.com — P17B0 2018 GMC Sierra Code - Transmission Range Control Module System Voltage Low

What does this mean?

What are the Possible Causes of the DTC P17B0 2018 GMC Sierra?

Faulty Transmission Range Control Module
Transmission Range Control Module harness is open or shorted
Transmission Range Control Module circuit poor electrical connection

How to Fix the DTC P17B0 2018 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 P17B0 2018 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 P17B0 2018 GMC Sierra code?

Need more information on how to fix the P17B0 2018 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P17B0 2018 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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 P17B0 2018 GMC Sierra Code

1. What does the OBDII code P17B0 mean on a 2018 GMC Sierra?

The P17B0 code indicates a "Transmission Range Control Module System Voltage Low," meaning the module is not receiving the correct voltage to function properly.

2. What are the symptoms of code P17B0 in a 2018 GMC Sierra?

Common symptoms include difficulty shifting gears, the transmission being stuck in one gear, erratic shifting, or the illumination of the check engine light.

3. What causes the P17B0 code to appear on a GMC Sierra?

This code is typically caused by issues such as a weak or failing battery, corroded or loose battery terminals, damaged wiring or connectors, or a faulty transmission range control module.

4. Can a low battery voltage trigger the P17B0 code?

Yes, a low or failing battery can result in insufficient voltage being supplied to the transmission range control module, triggering the P17B0 code.

5. How do I diagnose the P17B0 code on my GMC Sierra?

Start by checking the battery voltage, inspecting the battery terminals and wiring for damage or corrosion, and using a multimeter to test for proper voltage at the module.

6. Can I drive my 2018 GMC Sierra with the P17B0 code?

While the vehicle may still be drivable, it is not recommended as it can lead to erratic shifting or further damage to the transmission system if the issue is not resolved.

7. What repairs can fix the P17B0 code?

Repairs may include replacing or recharging the battery, cleaning or tightening battery terminals, repairing damaged wiring, or replacing the transmission range control module if it's faulty.

8. How much does it cost to fix the P17B0 code?

The cost varies depending on the exact issue, but battery replacements typically cost $100-$300, while replacing the transmission range control module can cost $500-$1,000 or more, including labor.

9. Can a faulty alternator cause the P17B0 code?

Yes, a faulty alternator can lead to low voltage in the system, which may cause the transmission range control module to malfunction and trigger the P17B0 code.

10. Do I need a professional mechanic to fix the P17B0 code?

While basic checks like inspecting the battery and terminals can be done at home, diagnosing and repairing wiring or module issues may require a professional mechanic with specialized tools.