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.
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HOMESERVICE MANUALSCHEVROLET2019BLAZER PREMIER, FWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTBODY INTERIORVEHICLE ACCESS SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESDTC B396E - LIFTGATE CLOSE SWITCH MALFUNCTIONCIRCUIT/SYSTEM DESCRIPTION
2019 Chevrolet Blazer Premier, FWD
Circuit/System Description
2019 Chevrolet Blazer Premier, FWDSECTION Circuit/System Description
For an overview of the component/system, refer to: Liftgate Description and Operation
| Circuit | Description |
|---|---|
| Signal | The control module input circuit has an internal resistance connected to 12 V. |
| Low Reference | Grounded through the control module. |
| Component | Description |
|---|---|
| B70 Liftgate Close Switch | When the switch is activated, the signal circuit to the control module is grounded. |
| K39 Liftgate Control Module | The control module K39 controls the liftgate motor function depending on inputs from a variety of sensors, switches and serial data information from other control modules. |
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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.