One problem related to brake light on has been reported for the 2004 Chevrolet Silverado 3500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Chevrolet Silverado 3500 based on all problems reported for the 2004 Silverado 3500.
In March while driving my 2004 chevy 3500 diesel truck the brake warning lights inside the cab lit up and the brake pedal was feeling spongy. I took it into classic auto group mentor for service. A wheel bearing was replaced along with a few other items and I was told that it was good to go. I picked it up. The brake pedal was still spongy and the warning lights were still on. On April 22, I returned to the classic auto group chevy service to again have the brakes serviced. They billed me $1400. 00 to change a valve, a module and some screws. The brakes now go all the way down to the floor when depressed with the motor running. There is no effective braking ability. With no effective braking the warning lights are not lit up. Classic auto group chevy in mentor says that this is normal. This is not how the brakes worked before the warning lights came on. They worked like brakes on any vehicle. Classic auto group mentor says that I should just get used to it. I have a complaint number from chevy # 71-1469406675.