[Rob Petrie E395]

When you pull the pan off disconnect the TCC solonoid and measure it with a ohm meter. If its more than 30 ohms its junk. Not a real uncommon problem and cheap to fix. To adjust the brake light switch start the truck and push the pedal down there will be a little *** hanging down off the switch push the *** back towards the seat and let the pedal go and its adjusted. The switch can be the problem too but if the truck has antilock brakes it will usually set a antilock brake code before it will start overriding TCC lockup. If the light on the dash stays on even when the emergency brake is off start with the switch adjustment and clear the code before pulling the pan it might save you some work. Another common problem on these trucks is 2 foot drivers (using one for the brake and the other for the gas) if you drive like this it will cause all kinds of problems with TCC & antilock brake codes.
Hope this helps
Rob

One more thing I just thought of check the fuse for the cigerette lighter. On some of these trucks the cig lighter and the tcc solonoind are on the same fuse. I know its stupid but its the way they did some of the trucks back then.