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.

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. Turn ON the ignition, with the engine OFF. Press the OnStar® Call Center button. 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	Press the call answer button. 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	Press the call answer button. 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