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 MANUALSCHEVROLET2016IMPALA LS, 3.6L ENG VIN NREPAIR AND DIAGNOSISBODY & FRAMEWINDOWSFIXED AND MOVEABLE WINDOW SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESDTC B3205CIRCUIT/SYSTEM VERIFICATION

2016 Chevrolet Impala LS, 3.6L Eng VIN N

Circuit/System Verification

2016 Chevrolet Impala LS, 3.6L Eng VIN NSECTION Circuit/System Verification

Ignition» On / Vehicle» In Service Mode
Perform the scan tool control function: Driver Window Motor» Up & Down
Verify the component works as specified: M74D Window Motor - Driver= Up & Down
- If not the specified state
  Test or replace the component:- M74D Window Motor - Driver
- If the specified state
Operate the component: S79D Window Switch - Driver
Verify the component works as specified: M74D Window Motor - Driver= Express Up & Express Down
- If not the specified state
  Use the following procedure: Window Motor Programming - Express Function
- If the specified state
Ignition/Vehicle & All vehicle systems» Off
NOTE: It may take up to 2 min for all vehicle systems to power down before an accurate ground or low reference circuit continuity test can be performed.
Ignition » On / Vehicle» In Service Mode
Operate the component: S79D Window Switch - Driver
Verify the component works as specified: M74D Window Motor - Driver =Express Up & Express Down
- If not the specified state
  Test or replace the component: M74D Window Motor - Driver.
- If the specified state
All OK.

RENDER: 1.0x

NO RELATED

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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.