My 98 silhouette gets smoke from thermostat area in town not on longer trips?

Your ABS/TC unit fragged......get a replacement one from a junk yard or from Ebay for ~ $100 or new/rebuilt ones are about double that

What color smoke blue means oil burning. White means coolant burning. From your description I am assuming blue. If this is the case you have either groove in your piston walls or damage piston ring. The reason for more smoke on long trip is the faster your speed more oil gets pumped into engine and the piston moves quicker and with the engine damage the piston ring can't remove all oil and it burned up when spark plugs ignition

Running hot and white smoke indicates failed head gasket. Sorry bout your luck

Look at the hoses coming from the radiator, the bottom large hose connects to the water pump.

locating the thermostat housing there will be a thick hose from radiator to some where on cylinder head this will be the housing where you will find the thermostat undo the bolts take out old thermostat then reverse to put back

sounds like sum fluid got spelt or thr transmission fill tube isnt all the way in

check and see if the head gaskets are blowed you may have a cracked or blown head or head gasket

For the 1998 Oldsmobile Truck Silhouette 3.4L SFI 6cyl
The Fuel Filter is located under vehicle, center, below seating area, front of fuel tank, mounted on chassis.

Hope helped (remember rated this help) Good luck.

The small oil leak from exterior of engine would not cause the smoke from tailpipe that your describing, even though I would take the time to clean that area well & pinpoint where it's coming from and repair it. Having recently experienced same symptom on my 98 intrepid 2.7, I must ask this, do you make a lot of short trips with the vehicle? My wife drives ours & we recently had to install a new muffler, and when it was removed it weighed a ton from moisture build up inside from too many short runs. Mechanic said it was full of water (not coolant) . Although I had explained to her that making 5 trips to the store, when 1 would have done it, isn't good for the car, she still has to make numerous short runs per day due to work, and this is whats causing the excessive moisture to build up in the exhaust system. If it isn't oil & isn't coolant, then I suspect it's simply moisture build up from too many short trips. Is this possible, do you make a lot of short trips?

On the 98 Silhouette, the PCM should be located in the air filter housing.