The Car Care Clinic with the Dr John

2001 Chevy - 2001 Chevy needs a new Body Control Module

Matt in Detford London

Question

My 2001 Chevy needs a new Body Control Module (BCM). Some of my dashboard gauges work sparingly. I have had it diagnosed at the dealer I purchased it from as well as a reputable garage and both have confirmed the need for a new BCM. I was quoted over 400 pounds in both places. Yesterday the odometer froze. Is the BCM or engine control unit still tracking my mileage, and just not relaying to the dash or is it completely frozen?

Where is the BCM located? How difficult is it to replace at home?

Answer

You'll be pleased to know Matt the Body Control Module (BCM) is a breeze to replace. The BCM is located on the top of the glove box on your Saturn and requires few tools to remove and install. Hoewever, there is a BUT to this one.

The BCM has to be programmed or it will not work. The only people that can program the BCM are the ones with the costly tools - dealerships. It's the BCM programming of it that is the biggest part of the job, money wise that is.

The labor to remove and replace it is the easy part. As for what is happening with the mileage? It is hard to say. The BCM is what stores and reports the mileage information. The dealership tech can probably answer that when he/she is doing the job for you.

Good Luck!
Dr. John