B0770 Chevrolet Code - All Wheel Drive Indicator Circuit
Quick Answer
The All Wheel Drive (AWD/4WD Auto) 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
- B0770 Chevrolet indicates All Wheel Drive 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 B0770 Chevrolet Description
The TCCM tests the AWD indicator circuit for unexpected voltage by monitoring the B+ supplied by the BCM on the indicator dimming control circuit by grounding the AWD indicator control circuit for 2 seconds during the Bulb Test at key ON.
What are the Possible Causes of the DTC B0770 Chevrolet?
- 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 B0770 Chevrolet?
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 B0770 Chevrolet 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 B0770 Chevrolet code?
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Information for Specific Chevrolet Models
- B0770 2014 Chevrolet Silverado — All Wheel Drive Indicator Circuit
- B0770 2015 Chevrolet Silverado — All Wheel Drive Indicator Circuit
- B0770 2016 Chevrolet Silverado — All Wheel Drive Indicator Circuit
- B0770 2017 Chevrolet Silverado — All Wheel Drive Indicator Circuit
- B0770 2018 Chevrolet Silverado — All Wheel Drive Indicator Circuit
Frequently Asked Questions about B0770 Chevrolet Code
1. What are the common symptoms of OBDII code B0770 in a Chevrolet related to the All Wheel Drive Indicator Circuit?
- Common symptoms include the all wheel drive (AWD) indicator light not functioning properly or staying illuminated on the dashboard.
2. What are the possible causes of OBDII code B0770 in a Chevrolet?
- The code B0770 in a Chevrolet can be caused by issues with the AWD indicator switch, wiring problems, or a faulty control module.
3. How can I diagnose the OBDII code B0770 in my Chevrolet?
- To diagnose the B0770 code, you can use a diagnostic scanner to retrieve the specific fault code and then inspect the AWD indicator circuit for any visible damage or loose connections.
4. Is it safe to continue driving my Chevrolet with OBDII code B0770 present?
- While the vehicle may still be operable with the B0770 code, it is recommended to address the issue promptly to prevent further damage or potential safety concerns related to the AWD system.
5. Can I repair OBDII code B0770 in my Chevrolet myself?
- Repairing the B0770 code in a Chevrolet may require basic electrical knowledge and tools. It is recommended to consult the vehicle's service manual or seek assistance from a professional mechanic for accurate diagnosis and repair.
6. How much does it typically cost to fix OBDII code B0770 in a Chevrolet?
- The cost of fixing the B0770 code in a Chevrolet can vary depending on the root cause of the issue. Repairs may range from a simple wiring repair to replacing the AWD indicator switch or control module, so it's best to get a proper diagnosis first.
7. Are there any preventive maintenance tips to avoid OBDII code B0770 in a Chevrolet?
- Regularly inspecting the AWD indicator system for any signs of wear or damage, as well as addressing any electrical issues promptly, can help prevent the occurrence of the B0770 code in a Chevrolet.
8. Can OBDII code B0770 cause other problems in my Chevrolet if left unresolved?
- Ignoring the B0770 code in a Chevrolet can potentially lead to inaccurate AWD system readings or malfunctions, affecting the vehicle's performance and safety on the road.
9. How long does it usually take to repair OBDII code B0770 in a Chevrolet?
- The repair time for the B0770 code in a Chevrolet can vary based on the complexity of the issue and the availability of parts. Simple fixes may take a few hours, while more involved repairs could require a day or more.
10. Will resetting the OBDII system clear the B0770 code in my Chevrolet?
- While resetting the OBDII system may temporarily clear the B0770 code, it is essential to address the underlying issue causing the code to prevent it from reoccurring. Resetting alone may not solve the problem.
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