Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Scan Tool Data Definitions
- 8 Digit GM Part Number
-
The scan tool displays an 8 digit alphanumeric number. The part number of the module.
- Balance
-
The scan tool displays a numeric value. This data parameter refers to the right to left audio output balance with a range from -50 to +50.
- Bass
-
The scan tool displays % (percent). This data parameter refers to the percentage of bass commanded by the radio.
- Battery Voltage
-
The scan tool displays the voltage level of the battery.
- Cal. Module 1 Part No.
-
The scan tool displays the 8 digit part number of the module.
- Cal. Module 1 Suffix
-
The scan tool displays the 2 position suffix of the module.
- Chime Volume
-
The scan tool displays 0-100%. The percentage at which the chime volume has been calibrated to.
- Fade
-
The scan tool displays a numeric value. This data parameter refers to the front to back audio output fade with a range from -50 to +50.
- Ignition Since Current DTC
-
The scan tool displays cycles of the ignition. This data parameter indicates the number of ignition cycles since a current DTC was set.
- Midrange
-
The scan tool displays % (percent). This data parameter refers to the percentage of midrange commanded by the radio.
- Operational S/W Part No.
-
The scan tool displays the 8-digit software part number of the module.
- Operational S/W Suffix
-
The scan tool displays the 2 position software suffix of the module.
- Signal Strength
-
The scan tool displays dB (decibel). This data parameter indicates the strength of the tuned frequency in dB.
- Treble
-
The scan tool displays % (percent). This data parameter refers to the percentage of treble commanded by the radio.
- Volume
-
The scan tool displays % (percent). This data parameter refers to the percentage of volume commanded by the radio.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.