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U2100 GMC Code - CAN Bus Communication

- Code Popularity: 2,274 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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By - Updated Jun 15, 2020
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|Code U2100 GMC Possible Causes

  • Faulty Module/Device that is not communicating
  • Module harness is open or shorted
  • Module circuit poor electrical connection

|How do I Fix the Code U2100 GMC?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Does your GMC have Safety Recalls? → Check here

|What is the Cost to Diagnose the Code U2100 GMC?

Labor: 1.0

The cost of diagnosing the U2100 GMC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

|What are Code U2100 GMC Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|Code U2100 GMC Description

The serial data circuits are used to communicate information between the devices. The serial data circuits also connect directly to the Data Link Connector (DLC). The Diagnostic Trouble Code (DTC) will set when the device setting the DTC has attempted to establish communications on the serial data circuits more than 3 times in 5 s.

OBDII Code U2100 GMC - CAN Bus Communication -
U2100 GMC Code - CAN Bus Communication

|Need More Information on the U2100 GMC Code?

Need more information on how to fix the U2100 GMC code? Get Access to Factory Service Manuals

|Need Help with the U2100 GMC Code?

Get the U2100 GMC code diagnosed by a professional: Find a repair shop in your area

|Code U2100 GMC comments

Help us improve Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the U2100 GMC code? Have you replaced any parts?
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