Where is the first to second shift accumulator located

HELP93

MEMBER
2001 CHEVROLET IMPALA
3.4L
6 CYL
188,000 MILES

I had the transmission rebuilt a couple months back. Due to a bad transmission. Now the transmission for the most part does fine. But every so often it will shift hard in first to second gear. All other gears are smooth. When I stop at a store shop for a few and get back in the car it's completely fine again. And can go days sometimes even weeks without rough shifting. No codes pop up. The guy who rebuilt the transmission says it sounds like it could be first to second shift accumulator. Is this hard to change? Where is it located? Do I have to replace the whole valve body? I keep looking up the first to second shift accumulator for my car and solenoids just pop up.

1 Reply

STEVE W.

MECHANIC
13,475 POSTS

It is in a bore in the valve body. It is not hard to change, but it may be that the bore itself is worn which means you replace it or sleeve it. I would have the guy who rebuilt it take it apart and check it. Hard to tell without pressure testing or pulling the valve and measuring the bore and piston.