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.

SYS.OK|MANUAL.DB● LIVE

HOMESERVICE MANUALSBUICK2019ENVISION BASEREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTHEADLIGHTSLIGHTING SYSTEM - DIAGNOSTIC INFORMATION AND PROCEDURESDIAGNOSTIC INFORMATION AND PROCEDURESTRAILER LAMPS MALFUNCTIONCIRCUIT/SYSTEM VERIFICATION

2019 Buick Envision Base

Circuit/System Verification

2019 Buick Envision BaseSECTION Circuit/System Verification

Ignition ON.
Verify the vehicles park lamps turn ON and OFF when commanding the Park Lamps ON and OFF with a scan tool.
- If the vehicles park lamps do not turn ON and OFF
  Refer to Park, License, and/or Tail Lamps Malfunction .
- Go to next step: If the vehicles park lamps turn ON and OFF
Verify the vehicles left brake lamp turns ON and OFF when commanding the Left Brake Lamp ON and OFF with a scan tool.
- If the vehicles left brake lamp does not turn ON and OFF
  Refer to Stop Lamps Malfunction .
- Go to next step: If the vehicles left brake lamp turns ON and OFF
Verify the vehicles right brake lamp turns ON and OFF when commanding the Right Brake Lamp ON and OFF with a scan tool.
- If the vehicles right brake lamp does not turn ON and OFF
  Refer to Stop Lamps Malfunction .
- Go to next step: If the vehicles right brake lamp turns ON and OFF
Verify the vehicles left and right turn signal lamps turn ON and OFF when commanding the left and right turn signal lamps ON and OFF with the turn signal/multifunction switch.
- If the vehicles left or right turn signal lamps do not turn ON and OFF
  Refer to Turn Signal Lamps and/or Indicators Malfunction .
- Go to next step: If the vehicles left and right turn signal lamps turn ON and OFF
Refer to Circuit/System Testing.

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

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.

Shop Manual-Ready Tools Free Quote Check Quote Shield Pro

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.