Two problems related to automatic transmission control module have been reported for the 1999 Chevrolet Silverado. The most recently reported issues are listed below.
The vehicle was taken to an independent mechanic who stated the abs pump and the pcm module were going bad. This problem was displayed in 1999 Silverado's. The problem was, the abs pump continued to run after the vehicle was turned off. (the abs was inoperative) gm representative stated there was no recall, but an upgraded part and the consumer paid for the repair.
Onsumer is not satisfied with this vehicle. Dealership had vehicle for thirty days over two month period. Consumer heard a grinding noise underneath the hood . Front four wheel drive differential was replaced. Also, steering wheel had a lot of play, and was replaced with upper and lower shaft/ transmission wouldn't shift into second and third gears. Dealership reprogramed pcm, and the transmission still doesn't operate at all. The back window flew open from the third door.