Quote:
Originally Posted by cooper1965
Wow, some of you guys are really taking Al's cleverly designed response as total gospel. Im not sure if its a lack of understanding, or just plain refusal to accept the truth. So many questions UN-answered.
If there was a build date cut-off, why doesn't GM recognize it? Why weren't dealers ever informed of this information? Why does the TSB specifically list current 18's including the Camaro? Why are dealers still performing the "FIX" on 18's? If fluid was the root cause, how come there are so many examples of shudder returning? The torque converter you say? Ok, how about the guys who got the flush and a torque converter only to have shudder return again? How about the countless examples of tuner's eliminating shudder permanently? How about the fact that nothing changed fluid wise or internally in the transmissions for 2018, yet Global warranty claims are down dramatically? Ect..Ect..
You guys can believe what you want, but the proof is there. I will circle a few critical areas on my previously posted document, since there still seems to be some confusion on that subject... Once again "EOP"= End of Production.
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If GM could plug in a USB Update patch and "fix" this they would.
Think about the economics of it. Pay dealer x amount to Flush, drive, flush, drive, flush, change torque converter.
Or....10 min Trans update.
I think a trans update will force GM to go back into EPA MPG ratings and redo all the tests...then a more deadly lawsuit and fines from the government.
The bottom line still remains the factory fluid breaks down under high temp...like any trans fluid. Temp is the life of the fluid. The harder you drive the car...the sooner the issues. So that is the large variable for who sees issues and when. It's not a matter of "If" it is truly a "When" it happens on your car.
I feel your pain on the shudder concern. Around 10k miles mine started. Dealer couldn't find it with several attempts (service clearly sucks). At 23k miles I changed it to Amsoil and instantly solved the problem. No more shake, shake, shake.
Ever since Knock sensors have been placed in the cars some slip has been added to the transmission. Without this the knock sensor starts picking up false vibrations and does it's job.
EDIT: Added Info: The factory fluid at 23k miles looked like muddy water. I was expecting a red, or dull red tint. NO! Take some black dye or ink and put a few drops in water. That is what factory fluid looked like. I was shocked by what it looked like.
My process for changing the fluid:
1) 10 micron external filter attached in place of lower front cooler.
2) 20 min run going into each gear repeated times: PRNDM DNRP
3) Remove filter and start car and pump fluid from pan. (measure fluid in QTs)
4) Drop pan and pour remaining fluid into measured QT container.
5) Replace pan filter and added 2 rare earth magnets to back of pan
6) Use drill pump and fill from cooler line all fluid that was pumped out (new fluid)
7) Start car again and measure fluid pumped out (dumping torque converter and filling with new fluid)
8) Repeat 6 and 7 until fluid went from "black water" to red fluid
Topped off fluid and again repeat PRND sequence
I put the car in track mode and headed out. seen fluid temp hit 240* with minimal spirited driving.
I'm believe in Amsoil! For over half the life of my car it had shudder (started 10k, changed at 23k.... 13k miles)
This solved the issue and no more shudder. (I will fully eat my words and inform everyone if the shudder returns!)