B0785 2015 GMC Sierra Code - Two Wheel Drive High Range Indicator Circuit
Quick Answer
The Two Wheel Drive (2WD) High Range (HI) indicator circuit consists of a Light Emitting Diode (LED) feed circuit, an LED, and an 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
- B0785 2015 GMC Sierra indicates Two Wheel Drive High Range 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 B0785 2015 GMC Sierra Description
The TCCM tests the 2WD HI indicator circuit for unexpected voltage by monitoring the B+ supplied by the BCM on the indicator dimming control circuit by grounding the 2WD HI indicator control circuit for 2 seconds during the Bulb Test at key ON.
What are the Possible Causes of the DTC B0785 2015 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 B0785 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 B0785 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.
Need more information about the B0785 2015 GMC Sierra code?
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Frequently Asked Questions about B0785 2015 GMC Sierra Code
1. What are the common symptoms of OBDII code B0785 in a 2015 GMC Sierra?
- Common symptoms include the illumination of the Two Wheel Drive High Range indicator on the dashboard and potential issues with the vehicle's two-wheel drive system.
2. What can cause the Two Wheel Drive High Range Indicator Circuit issue in a GMC Sierra?
- The B0785 code can be triggered by wiring issues, a faulty indicator switch, a malfunctioning transfer case control module, or a problem with the transfer case itself.
3. How serious is the B0785 OBDII code in a 2015 GMC Sierra?
- While the code may not affect the immediate drivability of the vehicle, it is important to address the underlying issue promptly to prevent potential problems with the two-wheel drive system.
4. Can I continue driving my GMC Sierra with the Two Wheel Drive High Range Indicator Circuit problem?
- It is generally not recommended to drive the vehicle with unresolved OBDII codes, as they can indicate underlying issues that may worsen over time and potentially lead to safety concerns.
5. How can I diagnose the B0785 code in my 2015 GMC Sierra?
- Diagnosis typically involves using an OBDII scanner to retrieve the specific code, inspecting the wiring and connections related to the indicator circuit, and testing components like the indicator switch and transfer case control module.
6. What are some repair tips for addressing the B0785 code in a GMC Sierra?
- Repair tips may include checking and repairing any damaged wiring, replacing a faulty indicator switch, testing and potentially replacing the transfer case control module, or addressing any transfer case problems.
7. Is it possible to reset the B0785 code in a 2015 GMC Sierra without fixing the underlying issue?
- While clearing the code may temporarily turn off the dashboard indicator light, the underlying problem will persist and may trigger the code again in the future.
8. How much does it typically cost to repair the Two Wheel Drive High Range Indicator Circuit issue in a GMC Sierra?
- The cost of repairs can vary depending on the specific cause of the issue, but it may involve expenses for parts replacement, labor costs, and diagnostic fees.
9. Can I fix the B0785 code in my GMC Sierra myself, or should I seek professional help?
- Depending on your automotive repair skills and knowledge, you may attempt to diagnose and repair the issue yourself. However, seeking professional help from a certified mechanic is often recommended for accurate diagnosis and proper repair.
10. Will fixing the B0785 code improve the overall performance and reliability of my 2015 GMC Sierra?
- Resolving the Two Wheel Drive High Range Indicator Circuit problem can help ensure the proper functioning of the two-wheel drive system, potentially improving the vehicle's performance and overall reliability.
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