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 MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1844 (DTC INDEX)CELLULAR, ENTERTAINMENT, & NAVIGATION DTCS
2003 Chevrolet TrailBlazer 4.2 S, 4WD
Cellular, Entertainment, & Navigation DTCS
2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Cellular, Entertainment, & Navigation DTCS
WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
CELLULAR, ENTERTAINMENT, & NAVIGATION DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | DEFINITION |
|---|---|
| DTC B1025, B1035, B1045, or B1055 | Audio Output Circuit |
| DTC B1259 | Antenna Ground Circuit |
| DTC B1287 | Amplifier Control Signal Circuit |
| DTC B2455 | Cellular Phone Microphone Circuit |
| DTC B2470 | Cellular Phone Antenna Circuit Malfunction |
| DTC B2476 | Cellular Phone Select Service Switch Malfunction |
| DTC B2482 | Cellular Phone Select Service Switch Range/Performance |
| DTC B2483 or B2484 | GPS Sensor Circuit |
| DTC U1500 | Inter-Device Dedicated Bus Malfunction |
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.