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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 944 (CELLULAR COMMUNICATION SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESVOICE RECOGNITION INOPERATIVE
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Voice Recognition Inoperative

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Voice Recognition Inoperative
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Voice Recognition Inoperative

Step Action Yes No
DEFINITION: The OnStar® personal calling feature may not be able to understand some or all words spoken.
1 Did you perform the Cellular Communication Diagnostic System Check? Go to Step 2  Go to Diagnostic System Check - Cellular Communication 
2
IMPORTANT: The vehicle must be located in a quiet area.
  1. Turn ON the ignition, with the engine OFF.
  2. Press the OnStar® Call Center button.
  3. Ask the OnStar® operator if your voice can clearly be heard.
Does the OnStar® operator hear your voice?		 Go to Step 3  Go to Microphone Inoperative - Caller Cannot Be Heard 
3
  1. Press the call answer button.
  2. Pronounce all Hands Free commands. Refer to OnStar Description and Operation  for proper pronunciation.
Did the OnStar® system recognize any of the voice commands?		 Go to Step 5  Go to Step 4 
4
  1. Press the call answer button.
  2. Have another person pronounce all Hands Free commands. Refer to OnStar Description and Operation  for proper pronunciation.
Did the OnStar® system recognize any of the voice commands?		 Go to Step 5  Go to OnStar Description and Operation 
5 The system is operational, but cannot identify certain word commands due to pronunciation. For tips on proper pronunciation refer to OnStar Description and Operation .
Operate the system in order to verify the repair.
Did you correct the condition?		 System OK Go to Step 2 
RENDER: 1.0x

NO RELATED

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
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  • • 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.