B0785 2016 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 2016 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 2016 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 2016 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 2016 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 2016 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 2016 GMC Sierra code?
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Frequently Asked Questions about B0785 2016 GMC Sierra Code
1. What are the common symptoms of OBDII code B0785 in a 2016 GMC Sierra?
The common symptoms include the malfunction indicator light (MIL) illuminating on the dashboard and the two-wheel drive high range indicator not functioning properly.
2. What does the OBDII code B0785 indicate in a 2016 GMC Sierra?
The code B0785 indicates a problem with the Two Wheel Drive High Range Indicator Circuit in the vehicle.
3. What are the possible causes of OBDII code B0785 in a 2016 GMC Sierra?
Possible causes include a faulty indicator switch, damaged wiring or connectors in the circuit, or a malfunctioning transfer case control module.
4. How can I diagnose the issue related to OBDII code B0785 in my 2016 GMC Sierra?
Diagnosis involves using a scan tool to read the stored trouble codes, checking the wiring and connectors for any damage, and testing the indicator switch for proper functionality.
5. Can I still drive my 2016 GMC Sierra with the OBDII code B0785 illuminated?
It is generally safe to drive the vehicle with this code, but it is recommended to have it diagnosed and repaired as soon as possible to avoid potential transmission or drivability issues.
6. Are there any DIY repair tips for fixing OBDII code B0785 in a 2016 GMC Sierra?
DIY repair tips may include checking and repairing any damaged wiring or connectors in the circuit, and replacing the indicator switch if found faulty.
7. How much does it typically cost to repair OBDII code B0785 in a 2016 GMC Sierra?
The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor at a repair shop.
8. Can a malfunctioning Two Wheel Drive High Range Indicator Circuit affect the overall performance of my 2016 GMC Sierra?
While the issue may not directly affect the performance of the vehicle, it can impact the driver's ability to engage or disengage the two-wheel drive high range mode.
9. Is it possible for the OBDII code B0785 to reoccur after being repaired in a 2016 GMC Sierra?
If the root cause of the issue is not properly addressed during the repair, there is a chance for the code to reoccur. It is important to ensure a thorough diagnosis and repair process.
10. How long does it take to repair OBDII code B0785 in a 2016 GMC Sierra?
The repair time can vary depending on the exact cause of the issue and the repair shop's workload, but it typically takes a few hours to complete the diagnosis and repair process.
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