One problem related to instrument panel has been reported for the 2003 Chevrolet Blazer. The most recently reported issues are listed below.
The was a sensor on the dash which controlled the headlights. When the vehicle was under a tree or in the garage, the headlights went dim. The dealer stated there was a code to over ride the system. The dealers had no access to the code. The sensor on the dash turned down the dash lights which made it impossible to read the instrument panel. At dusk the high beams came on without the driver's knowledge. The consumer is looking for the code that will allow the light to operate manually.