Engine-Codes - Gmc - B1045 GMC

B1045 GMC - Audio Output 3 Left Rear Circuit

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

B1045 GMC Possible Causes

  • Faulty Speaker Output 3
  • Speaker Output 3 harness is open or shorted
  • Speaker Output 3 circuit poor electrical connection
  • Audio Amplifier

How is the B1045 GMC code repair?

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.

Tech Notes

B1045 01 Audio Output 3 Left Rear Circuit Short to Battery
B1045 02 Audio Output 3 Left Rear Circuit Short to Ground
B1045 04 Audio Output 3 Left Rear Circuit Open

What is the cost to diagnose the B1045 GMC code

Labor: 1.0

The cost to diagnose the B1045 GMC code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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Possible Symptoms

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

B1045 GMC Meaning

The Up-Level radio (UQA) supplies 4 channels of audio to an amplifier. The amplifier supplies 6 input signal channels to 8 speakers. The radio sets a current status for this Diagnostic Trouble Code (DTC) when a short to ground, short to voltage or an open is detected on any of the 6 speaker channel outputs from the radio.

More Information

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