Marty--I assume you're talking about the cabin temp sensors. Look up at the hand grabs above the driver and passenger doors. Underneath each grab you will see a little plastic cap with some holes in it. Behind this cap is the sensor that will get covered with dust, etc., and cause your A/C system to go beserk and cast all kinds of A/C codes to the computer. The little caps pull out with finger pressure and a little bit of swearing, but they will come out. They are angled in slightly, and don't pull straight out. Once you get them out, sit in the seat and with a flashlight, look inside. You will see a delicate mechanism with some tiny springs. You do NOT scratch around inside there with a pencil, brush or some other slender instrument. Use either a vacuum cleaner to suck the dust and furry material off the mechanism, or high pressure air to blow it back into the blower motor which sucks air from inside the passenger compartment and reads the temp, which it feeds to the A/C. I use high pressure air to blow mine clean. Trying to get the end of a vacuum cleaner hose past the handle and over the opening is iffy, at best. Be very careful putting the cover back on, because it has about a one-inch tube on the end of it that slides down and around that sensitive little sensor. It's angled and only goes back in one way, so be careful that you don't jam it back in and mess up the sensor. Dick