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B153B GMC Code - Liftgate Open Switch Signal Circuit

- Code Popularity: 3,745 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B153B GMC?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Liftgate Motor Assembly
  • Liftgate Motor Assembly harness is open or shorted
  • Liftgate Motor Assembly circuit poor electrical connection
  • Faulty Liftgate Control Module (LGM)
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How to Fix the DTC B153B GMC?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

B153B 02 Liftgate Open Switch Signal Circuit Short to Ground
B153B 05 Liftgate Open Switch Signal Circuit Open

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B153B GMC code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

Code B153B GMC Description

The full open switch is part of the gear motor assembly and will close and become active when the liftgate reaches the full open position. The full open switch signal circuit is supplied battery voltage through a resistor and monitored within the Liftgate Control Module (LGM). The Liftgate Control Module provides a low reference circuit and when the switch contacts close, the signal circuit goes low and the LGM determines the switch to be active.

OBDII Code B153B GMC - Liftgate Open Switch Signal Circuit - AutoCodes.com
B153B GMC Code - Liftgate Open Switch Signal Circuit

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Code B153B GMC comments

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