2008 Buick LaCrosse intermittently does funny stuff around 2000 RPM. “Bucks,” “lurches,” and “revs” are some fitting words. When I give it gas to get above 2000 - or let off the pedal - it seems to do fine. Sometimes it’ll go a whole trip without any issues at all. Most consistent problem spots are under load (climbing a hill) at 40+ mph right around 2k rpm. It FEELS like its starved for fuel. That lurching feeling you get when you’ve completely run your car out of gas right before you roll to a stop, if any of you know what that feels like.
One guy thought it might be an issue with the Torque Converter Clutch Solenoid. There’s close to 98k miles on the transmission, so it’s not buttery smooth by any means, but it doesn’t seem to slip or “shudder” any notable amount. I also read someone else’s post on here saying a similar issue came down to a misfire and changing the spark plug and line cleared it up.
No check engine, no codes, nothing to go on right now but one guy’s opinion. I’m going to start with what I know; new fuel filter, replace spark plugs and wires, keep an eye on the tranny fluid. I was just wondering if anyone had any other ideas before I go ahead and drop out the transmission.