Hi,
My 2000 Silhouette 3.4L V6 has about 151,000 miles. It is running great. But lately has developed an intermittent hard shifting while accelerating through all gears. I say intermittent because you can start the engine cold and it will shift smoothly the entire trip, be it a 10 minute drive or a two-hour drive. However, once you shut off the engine...maybe like for shopping or whatever....when you restart the already warm engine, the shifting will all be noticeably hard while accelerating through all gears. You will arrive at your destination, but you will feel every gear change when accelerating. Possibly there is a whining sound too, but not very obvious.
I've been reading some of the previous threads about the PCS as the likely culprit.... Would any of you have an opinion on that?
My check engine light has been on for a while, but the codes are related to emissions...secondary air pump, which I currently have disconnected because the pump is bad and I haven't had the desire to replace it, especially since it doesn't affect performance or driveability, as far as I can tell.
I don't believe my scan tool has the ability to read codes related to the transmission. Does that require a special code reader?
I read that the PCS replacement is a bit of a pain. I've done a good deal of repair jobs on various vehicles over the years, so I'm not afraid of a challenge. Nonetheless, I don't want to go to that effort without being pretty darn certain that the PCS is the real culprit here.
I appreciate any advice. Thanks.