Go to autozone they do it for free
It is on the opposite side of the throttle body from the throttle cable attachment.
The 3.8L engine found in some years and models of Buick cars uses a throttle body to regulate the amount of air flowing into the engine. This throttle body has a butterfly valve on the front which is opened and closed with the throttle cable. The throttle body needs occasional maintenance, including cleaning and lubricating the linkage. To do this, you can remove the throttle body from the engine, which should take about an hour to do.
You can reset it with your OBD reader or you can disconnect the negative battery cable for a couple of minutes to reset the check engine light.
disconect pos battery cable for a few minutes
It is on the throttle plate right across from the throttle cable.
remove neg. battery cable for 10 min. and reconnect. that should reset the light.
You can reset it by disconnecting the negative battery cable for 5 minutes. But, it will just come back on unless you repair the problem.
The throttle position sensor is on the throttle body. That's the part of the engine that controls the amount of air allowed into the engine. To find the throttle body, follow the air intake routing toward the engine. The throttle body is the part that sits on the intake manifold. To find the throttle position sensor, follow the throttle cable to the throttle body. If it helps, have someone press down and release the throttle pedal while you're looking for the throttle body/position sensor. The throttle cable causes a shaft to turn, that's the part that controls the air coming into the engine. The throttle position sensor is connected to that shaft.
The TPS (throttle position sensor) would be found on the throttle body on the opposite side of the throttle cable.
unplog the battery cable for 10 seg. unplug the battery cable for 10 s,
Check for a floormat catching on the accelerator. If not the floormat, usually is a mis-routed cable where it comes out of the cable jacket and loops around the throttle shaft. This will hurt you or your engine if left alone-- please fix it quickly. You can check throttle operation with engine off.
Discconect the negative cable from the battery for a few minutes and that should do the trick