B0775 2017 GMC Sierra Code - Four Wheel Drive High Indicator Circuit
Quick Answer
The Four Wheel Drive HI indicator circuit consists of a Light Emitting Diode (LED) feed circuit, a LED, and a LED control circuit. Common causes include Faulty Transfer Case Select Switch, Transfer Case Select Switch harness is open or shorted, Transfer Case Select Switch circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- B0775 2017 GMC Sierra indicates Four Wheel Drive High Indicator Circuit.
- Common causes
- Common causes include Faulty Transfer Case Select Switch, Transfer Case Select Switch harness is open or shorted, Transfer Case Select Switch circuit poor electrical connection.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Code B0775 2017 GMC Sierra Description
The TCCM tests the 4WD HI indicator circuit for unexpected voltage by monitoring the B+ supplied by the BCM on the indicator dimming control circuit by grounding the 4WD HI indicator control circuit for 2 seconds during the Bulb Test at key ON.
What are the Possible Causes of the DTC B0775 2017 GMC Sierra?
- Faulty Transfer Case Select Switch
- Transfer Case Select Switch harness is open or shorted
- Transfer Case Select Switch circuit poor electrical connection
- Faulty Transfer Case Shift Control Module (TCCM)
How to Fix the DTC B0775 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 B0775 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 B0775 2017 GMC Sierra code?
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Frequently Asked Questions about B0775 2017 GMC Sierra Code
1. What are the common symptoms of OBDII code B0775 in a 2017 GMC Sierra related to the Four Wheel Drive High Indicator Circuit?
The common symptoms include the four-wheel drive high indicator not illuminating or staying on permanently, even when the vehicle is not in four-wheel drive mode.
2. What are the possible causes of OBDII code B0775 in a 2017 GMC Sierra?
Possible causes of this code include a faulty indicator switch, wiring issues in the indicator circuit, or a malfunction in the transfer case control module.
3. How can I diagnose the OBDII code B0775 in my 2017 GMC Sierra?
Diagnosing this code typically involves using a scan tool to retrieve the specific fault code, checking the indicator switch for proper operation, inspecting the wiring for any damage, and testing the transfer case control module.
4. Can I continue driving my 2017 GMC Sierra with OBDII code B0775 present?
While the vehicle may still be operable with this code, it is recommended to address the issue promptly to ensure proper functioning of the four-wheel drive system and avoid potential safety concerns.
5. How can I repair OBDII code B0775 in my 2017 GMC Sierra?
Repairing this code may involve replacing the faulty indicator switch, repairing any damaged wiring in the circuit, or reprogramming the transfer case control module, depending on the root cause of the issue.
6. Is OBDII code B0775 in a 2017 GMC Sierra a serious problem?
While the severity of the issue may vary, addressing this code is important to maintain the proper functioning of the four-wheel drive system and ensure the vehicle's overall performance and safety.
7. Can a DIY enthusiast fix OBDII code B0775 in a 2017 GMC Sierra?
Depending on the specific cause of the code, some DIY enthusiasts with the necessary tools and knowledge may be able to address the issue themselves, but professional assistance is recommended for complex repairs.
8. How much does it cost to repair OBDII code B0775 in a 2017 GMC Sierra?
The cost of repairing this code can vary widely depending on the root cause of the issue, the required parts, and labor costs. It is advisable to obtain quotes from reputable mechanics or service centers.
9. Will OBDII code B0775 cause my 2017 GMC Sierra to fail an emissions test?
Since this code is related to the four-wheel drive high indicator circuit and not emissions control, it is unlikely to cause your vehicle to fail an emissions test. However, it is still important to address the issue for proper vehicle operation.
10. How long does it take to repair OBDII code B0775 in a 2017 GMC Sierra?
The repair time for this code can vary depending on the specific cause and complexity of the issue. Simple fixes may take a short amount of time, while more involved repairs could require several hours or more.
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