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 MANUALSCHEVROLET2019BLAZER PREMIER, FWDREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTINFOTAINMENTCELLULAR, ENTERTAINMENT, AND NAVIGATION SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESNO GLOBAL POSITIONING SYSTEM (GPS) RECEPTION (UE1)CIRCUIT/SYSTEM TESTING
2019 Chevrolet Blazer Premier, FWD
Circuit/System Testing
2019 Chevrolet Blazer Premier, FWDSECTION Circuit/System Testing
- Ignition OFF/vehicle OFF, disconnect the GPS coax cable connector at the K73 Telematics Communication Interface Control Module.
- Attach both leads of the EL-49903-1 OnStar test antenna to the EL-49903-5 combiner. Using the EL-49903-6 coax cable attach the grey connector to the combiner and the brown connector to the K73 Telematics Communication Interface Control Module. Place the test antenna on the roof of the vehicle, ignition ON.
- Verify DTC B2462 is not set or that the OnStar advisor can locate the vehicle.
- If DTC B2462 is set or the advisor can not locate the vehicle
Replace the K73 Telematics Communication Interface Control Module.
- Go to next step: If DTC B2462 is not set or that the OnStar advisor can locate the vehicle.
- If DTC B2462 is set or the advisor can not locate the vehicle
- Ignition OFF/vehicle OFF, disconnect the EL-49903-1 OnStar Test Antenna, Navn-Cell Comn from the K73 Telematics Communication Interface Control Module
- Disconnect the GPS coax cable at the T2RR Antenna - Roof Rear.
- Test the coax cable between the K73 Telematics Communication Interface Control Module and the T2RR Antenna - Roof Rear. Refer to component testing.
- If the coax cable does not pass the test
Replace the coax cable.
- Go to next step: If the coax cable passes the test
- If the coax cable does not pass the test
- Test or replace the T2RR Antenna - Roof Rear.
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.
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.