Icemark

1. Remove the Driver's Side running board cover
It’s the long plastic piece that mounts immediately below the door. This is held in by 6 screws. Pull the plastic rail up, away from the vehicle. There are three metal clips under the running board cover that hold it down, so you will have to provide a pretty good amount of upward pressure.

2. Remove Plastic Side Panel
Take a look at the plastic side panel on the left side of the driver's foot well. This is called the kick panel. Remove the three plastic lock tabs that hold the plastic kick panel cover in. Pull them out. Then lift the panel up and out of the way.

3. Find the CPU.
The CPU is the black almost rectangular box bolted to the metal in the driver’s kick panel. It will have a large wiring harness plugged into the front of it and 1 or two plugs on the bottom. Unplug the harnesses. There is a 10mm nut holding the CPU in place you need to remove it, and then slide the top of the CPU off the mounting bolt. The whole CPU then slides up and can be removed from the car.

4. Remove all the small screws on the CPU (usually 2).
Remove the rear and bottom cover panels, (they are locked in with tabs). This will allow you access to the circuit boards.

5. Resolder
Take a close look at all the solder points on all three of the circuit boards. It would be wise to resolder all of them if you have the ability to do so. However, if you're in a hurry you can just resolder the areas where the spade connectors for the wiring harness plugs are located and where the relays mount. These are easy to recognize because of the copper spade connectors on the component side of the board and the larger solder points on the other side of the board.

These solder points often are the main cause of trouble due to the stress from the weight of the wiring harness and relays bouncing around on them.

Remember when re-soldering you should remove the old solder first (with a solder sucker or solder braid) then flow new solder in. Also use a 25 watt or less soldering iron or professional temp adjustable soldering iron. Too high of temps will burn the circuit board traces off or damage other parts of the board.

6. Re-assemble and plug in and test.
Test by plugging in the CPU before bolting the CPU in, just in case you missed a joint and need to solder the CPU again. If it checks out okay, then re-install and re-assemble the car.