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K5 Automatic Level Control Module: Scan Tool Information
2025 Chevrolet Suburban LS, 4WDSECTION K5 Automatic Level Control Module: Scan Tool Information
The K5 Automatic Level Control Module scan tool data parameters list contains all automatic level control related parameters that are available on the scan tool. The list is arranged in alphabetical order. A given parameter may appear in any one of the data lists.
Automatic Level Control Module Scan Tool Data Parameters
| Parameter | System State | Expected Value | Description (Range) |
|---|---|---|---|
| Operating Conditions: Ignition ON | |||
| Air Suspension Reservoir Pressure | Normal Ride Height | 18 bar | The scan tool displays the Air Suspension Reservoir Pressure (2 - 20 bar). |
| Left Front Air Spring Pressure | Normal Ride Height | 6.6 - 8.6 bar | The scan tool displays the pressure inside the Left Front Air Spring (2 - 11 bar). |
| Left Front Position Offset From Trim | Normal Ride Height | 0 mm | The scan tool displays amount offset from Normal Ride Height of the left front position sensor (-25 - 50 mm). |
| Left Front Suspension Position Sensor Trim Height | Normal Ride Height | 53% | The scan tool displays the Left Front Position Sensor Duty Cycle (0 - 100%) |
| Left Rear Air Spring Pressure | Normal Ride Height | 5.2 - 6 bar | The scan tool displays the pressure inside the Left Rear Air Spring (2 - 11 bar). |
| Left Rear Position Offset From Trim | Normal Ride Height | 0 mm | The scan tool displays amount offset from Normal Ride Height of the left rear position sensor (-25 - 50 mm). |
| Left Rear Suspension Position Sensor Trim Height | Normal Ride Height | 51% | The scan tool displays the Left Rear Position Sensor Duty Cycle (0 - 100%) |
| Right Front Air Spring Pressure | Normal Ride Height | 6.6 - 8.6 bar | The scan tool displays the pressure inside the Right Front Air Spring (2 - 11 bar). |
| Right Front Position Offset From Trim | Normal Ride Height | 0 mm | The scan tool displays amount offset from Normal Ride Height of the right front position sensor (-25 - 50 mm). |
| Right Front Suspension Position Sensor Trim Height | Normal Ride Height | 53% | The scan tool displays the Right Front Position Sensor Duty Cycle (0 - 100%) |
| Right Rear Air Spring Pressure | Normal Ride Height | 5.2 - 6 bar | The scan tool displays the pressure inside the Right Rear Air Spring (2 - 11 bar). |
| Right Rear Position Offset From Trim | Normal Ride Height | 0 mm | The scan tool displays amount offset from Normal Ride Height of the right rear position sensor (-25 - 50 mm). |
| Right Rear Suspension Position Sensor Trim Height | Normal Ride Height | 51% | The scan tool displays the Right Rear Position Sensor Duty Cycle (0 - 100%) |
| Vehicle Level Control Compressor Temperature | - | Varies | The scan tool displays the current temperature of the Automatic Level Control Compressor (-40 - 125°C). |
Automatic Level Control Module Scan Tool Output Controls
| Output Control | Description |
|---|---|
| Air Spring Deflation | Short Term Deflate - Opens the selected valve for up to a 2 second to allow visible movement. This verifies that the spring can properly deflate. Complete Deflate - When vehicle is raised off the ground or an individual corner is jacked/raised up, opens the valve until selected air spring is approximately 2 Bar. Used to deflate the selected air spring for replacement or testing. |
| Deflate Air Suspension Reservoir | Opens selected valve until pressure is low enough for Reservoir Removal |
| Equalize All Air Spring Pressures | Equalizes spring pressures on the selected axle. Function runs for up to 12 seconds. Used to equalize pressures across axle after component replacement. |
| Short Term Inflate | Opens the selected valve for up to 2 seconds, allowing selected corner to inflate and see that air moves into air spring. Used for testing air spring inflation and inflating air spring after repair or replacement. |
| Pneumatic Connection Pressure Test | Tests the pneumatic connection from the Pneumatic Control Unit to the Air Compressor. Used any time the airline is opened or replaced to verify there are no leaks. |
| Test Compressor Pneumatic Operation | Commands the Air Suspension Leveling Compressor to On for a up to 20 seconds. Used to verify the compressor motor/pump/exhaust valve mechanical, electrical, and pneumatic operation. |
Automatic Level Control Module Scan Tool Configuration/Reset Functions
| Configuration/Reset Function | Description |
|---|---|
| Air Spring Deflation | Opens the selected valve for up to a 2 second to allow visible movement. Used to deflate the selected air spring for replacement or testing. |
| Level Vehicle to Target Height | Commands the vehicle to the Normal Ride Height. Used to return vehicle to Normal Ride Height after performing tests or repairs. |
| Trim Height Settings | Allows vehicle trim height to be set. Used after ECU reflash or component replacement. |
RENDER: 1.0x
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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.