Engine-Codes - Gmc - B051B GMC

B051B GMC Code - Right Side Assist Step Motor Control Circuit

- Code Popularity: 768 Views
- Repair Importance Level: 1/3
- Repair Difficulty Level: 2/3
Table of contents

|What are the Possible Causes of the Code B051B GMC?

  • Faulty Right Side Assist Step Motor
  • Right Side Assist Step Motor harness is open or shorted
  • Right Side Assist Step Motor circuit poor electrical connection
  • Faulty Assist Step Control Module (ASC)

|How to Fix the B051B GMC Code?

Start by checking 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.

|Code B051B GMC Tech Notes

B051B 0B Right Side Assist Step Motor Control Circuit Current Above Threshold
B051B 01 Right Side Assist Step Motor Control Circuit Short to Battery
B051B 02 Right Side Assist Step Motor Control Circuit Short to Ground
B051B 04 Right Side Assist Step Motor Control Circuit Open Circuit

|What is the Cost to Diagnose the Code B051B GMC?

Labor: 1.0

The cost to diagnose the B051B GMC code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

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|What are Code B051B GMC Possible Symptoms?

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

|What Does the B051B GMC Code Mean?

The Assist Step Control Module (ASC) controls the running board actuators to extend or retract the running boards. Each actuator consists of an electric motor and a potentiometer. The module supplies a low reference and 10-volt reference source voltage to the potentiometer. The ASC control module monitors the voltage drop across the potentiometer on the position signal circuit. When the actuator shaft rotates, the voltage on the position signal circuit changes. The ASC control module supplies the actuator motor with a 12-volt control circuit and a ground control circuit. The ASC module controls the direction of the actuator by changing the polarity of the control circuits.

Right Side Assist Step Motor Control Circuit

|Need more Information on the B051B GMC Code?

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|Need Help with the B051B GMC Code?

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