Hey all.....I realize if the tv cable has too much......slack....you can easily burn the frictions. Been running my rebuilt 2004r now since march.....no issues, awesome trans. It always had a bit of a short shift from 1-2. Last night, I tightened the tv cable one click. It made a noticeable and perfect adjustment in 1-2. Drove it all afternoon with such a smile. But after picking up my Son from a football game last night, it felt as though it started to slip when in traffic pulling out of the school. Never experienced before ever. It was slipping, and felt as though it would not shift. Did manual shifts, all good. Then......it went away, car shifted great rest of the way home. When I got home, I pulled the dipstick. The fluid was still nice and pink, but a gray matter wiped off, and you could see many specs of black soft particles. So is it possible that by moving the TV one click tighter, you can burn some frictions? Or something else went wrong? Not sure I want to drive now, maybe drop the pan
The easiest way to adjust the TV cable is to throw the 2004r in the dumpster and put a 4l80e in. The sooner the better. Too tight of a cable will not burn the clutches. If its too tight you'll notice a hard slam when shifting into drive from park/neutral.
Couple of things can be problematic. The throttle angle and geometry have to be right. Your temporary problem could be leaky or stuck boost valve, the actual cable itself or sticky governor. I would slip it into neutral and work the throttle to see if it clears. Usually 2-3 shift is the first to get soft.
That's what I would do. Why diagnose a new transmission. Why replace a $25 tv cable or adjust the current one correctly. I also wouldn't contact the company that rebuilt it, because it's probably still under warranty. Just crack open that wallet and spend 5k plus on a 4l80e. It shouldn't take but a weekend to install. Maybe an extra day for the pcm install and related wiring. And you can probably make the driveshaft yourself.
Fair enough. let me rephrase.. build a time machine and go back to the point when you decided on a 2004r and go with a 4l80e. It'll still be easier than and 10x better than a 2004r. I would bet a near stock 4l80e would be more than adequate and cost about the same installed as the 200.. I digress.... The best way to adjust the cable is to hook up a pressure gauge and see what's going on. Anything else is just guessing.
Thanks guys. Pressures were perfect since new in March. I verified all pressured and TV cable adjustment....by visually inspecting the valve. The trans shifts hard. It must just be pure coincidence, that the day I tighten the cable a click....which improved the 1-2.....is the night that she feels like slipping. I will test drive it tomorrow again. Had to work all day today. Yes, it's still under warranty. Just a PIA to pull, pallet and ship. Extreme Automatic has proven to me that they stand by their product 100 percent. I was just curious if valve adjust too tight, the valve inside the valve body may change when pressures are applied depending the position of the valve. Wish I did not even mess with it. Oh well.....that's how the hobby goes
The way the GM factory manual says to adjust the TV cable only works if everything is new. I tried to adjust it on my TTA and couldn't get the housing to move at all until I sprayed WD-40 into it. I found the best way to get in the ball park is to unclip the cable from the throttle and linkage and see where the center of the clip is in relationship to the center of the stud it clips onto. The clip center should be 1/4" to 3/8" behind the center of the stud when the tension just starts on the cable so, the cable should slight tension on it at idle.
