SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2019BLAZER PREMIER, FWDREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTINFOTAINMENTCELLULAR, ENTERTAINMENT, AND NAVIGATION SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESONSTAR BUTTON LED MALFUNCTIONCIRCUIT/SYSTEM VERIFICATION
2019 Chevrolet Blazer Premier, FWD

Circuit/System Verification

2019 Chevrolet Blazer Premier, FWDSECTION Circuit/System Verification
NOTE:
  • If the green LED is off with the ignition ON and the LED does not function when commanded with the scan tool, contact the OnStar Center to confirm the vehicle has a current subscription.
  1. Vehicle in Service Mode/Ignition ON.
  2. Verify no DTCs are set.
    • Go to next step: If no DTCs are set 
  3. Verify that the green LED turns ON and OFF when commanding the Green Indicator ON and OFF with a scan tool.
    • If the green LED does not turn ON and OFF 

      Refer to Circuit/System Testing - Green LED Test

    • Go to next step: If the green LED turns ON and OFF 
  4. Verify that the red LED turns ON and OFF when commanding the Red Indicator ON and OFF with a scan tool.
    • If the red LED does not turn ON and OFF 

      Refer to Circuit/System Testing - Red LED Test

    • Go to next step: If the red LED turns ON and OFF 
  5. All OK.
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 ToolsFree Quote CheckQuote 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.