4L60E Transmission TCC Valve 2000-2003 Fix P1870 Code Non-Can Bus

Didn't fix my P1870 DTC on my 02 blazer with the 4l60e. Code had came up after I had changed the fluid and filter. I tried this as I couldn't figure out anything else. I ended up having to remove my valve body to install but it wasn't very hard. GM could have saved some serious effort if they would have just clipped in the tcc from the bottom -_- .... No change after install, still would rev up and wouldn't move anywhere. Just stuck revving in place. I decided to check the trans filter and it seemed fine but really loose. I replaced the trans filter seal in the valve body and reassembled. Shifted and worked like it should and the dtc went away. Before you order this check your trans filter and seal as they can leak enough to keep the trans from getting enough pressure to engage and setting an 1870 DTC. The new tcc is in there and to be honest it hasn't caused any issues nor do I notice much of a change. It is a good product just not what I needed for my fix.

Factory junk! If u have a rough shift in ur chevy and u get the opportunity save urself some time and money, rip this junk out and plug in a fitzall tcc valve. ull dodge a big ass headache and repair bill no joke cuz when the spring collapses or valve shaft bores out over time u lose pressure and ur comp tries to compensate for it ie the rough hard feel like ur gonna snap a gear shift. Common chevy issue wt valve body but easy asf to fix before it gets expensive 😁. Ps no go on anything newer than 03 wt can bus comp u gotta get the adapt one if u have tht kinda comp #chevygang #blacksheepkustoms #shadetreeredneck

I saw this product in a YouTube video doing installed in a 98 s10/blazer I installed this part in my 02 Tahoe rwd because of harsh 1-2 shifts and p1870 -p1860 codes solved the issues completely I had the trim it a bit the valve removed looked nothing like the picture and the valve I bought seemed too long so I cut it shorter it worked out just fine took me five hours to do the job 3 hours removing the clip holding the old valve plug in I got it with a pick and two screw drivers and ground down needle nose pliers if any one knows what bad can come of me cutting short let me know I'm 700 miles past the job now and still no issues

Bought this for my wife’s 00 Tahoe 5.3L 4x4 w/4L60E. Truck has over 300k, had p1870 code and hard shift when hot, took a chance and flushed the system, changed the filter and put in the fitzall valve by dropping the pan, had a hard time removing the clip but got it in and done. Fixed all my issues, shifts like new, no more 1870 code, great product, would def. recommend!!! I would say results like this on this kind of mileage trans are far from typical.

High quality but Tuff getting in with the o-rings but at least I know it won't be blowing fluid out the end plug and cause decrease in pressure.

Very fast service,the parts look to be right,but this a project car so I can't test them ! Good Job

Does what its designed to do

tore apart transmission to put this in as it claims to kill the p1870 code, all that work for nothing. Followed instructions to the T and still have the error code. Not worth the time and effort to tear apart transmission again to return it. Should be taken off the market if it wont do what it claims.