2000 Transmission hard shift

[BNaylor]

Originally Posted by troy1

The new PCS are NOT backwards compatible according to all my info. A bad PCS with cause harsh shifts when hot or even shudders and slide bang shifts. I have seen people drive them too long and burn up clutches or break the 2nd drum. My advice would be to get it fixed because its only going to get worse. Please don't get an aftermarket solenoid and do your self a favor and replace the TCC PWM solenoid also.

Thanks for responding to my PM and weighing in Troy. I was not sure about the compatibility issue on the PCS solenoid but now we know for sure.

In case you all do not know Troy is a professional tranny tech and specializes in GM and other make trannies. Also, he earned the Advisor Title of "GM Tranny Advisor".

[cef2lion]

All great information. I added some of the seafoam transmission additive yesterday. Noticed a difference just today but it feels like the issue is still there just not as pronounced.

When changing transmission filter. Would it be a good idea to put in a drain plug on the pan. My F250 has a drain plug and I get out about 7 quarts. Maybe twice a year since it is so easy I just pull the plug and then add back in what I got out. Not as good as getting it serviced but it keep introducing new fluid. Pretty easy with the drain plug.

Also, would there have been any computer/transmission updates for these cars? I just had the PCM flashed to lastest rev on my F250. If there is would there be a sticker telling you the version and a chart somewhere with latest for that year.

Craig

[panzer dragoon]

Also, would there have been any computer/transmission updates for these cars? I just had the PCM flashed to lastest rev on my F250. If there is would there be a sticker telling you the version and a chart somewhere with latest for that year.

http://tis2web.service.gm.com/tis2web

[cef2lion]

I went to that site and got this.

12202244 12201888 N/A - Calibration to correct P1441 from setting on a hot restart.

9390234 9390172 N/A - Control module calibration

Is this a list of all updates that ever came out for this VINs computer or a history of what has been applied to date to this VIN? For my Ford they just applied one update to get all patches to latest rev. Have never had a GM update done. Sort of going in how would one know an update had been applied? Does GM service place a sticker somewhere when an update is done.

Craig

[BNaylor]

Originally Posted by cef2lion

I went to that site and got this.

12202244 12201888 N/A - Calibration to correct P1441 from setting on a hot restart.

9390234 9390172 N/A - Control module calibration

Is this a list of all updates that ever came out for this VINs computer or a history of what has been applied to date to this VIN? For my Ford they just applied one update to get all patches to latest rev. Have never had a GM update done. Sort of going in how would one know an update had been applied? Does GM service place a sticker somewhere when an update is done.

Craig

The GM dealer uses a Tech II machine to verify PCM data to include revision info.

BTW - There is no PCM revision or reflash procedure available that will resolve a PCS issue.

[cef2lion]

Just wondering about updates. I knew the PCS issue was a physical problem and I need to deal with it.

Based on that report would you consider having the computer flashed with those updates or if I'm not having any burning issues don't worry about it.

Also, wonder what people might thing about adding a drain plug to the tranny pan.

[cef2lion]

I had my 2000 into a GM dealer my brother works for on Friday. They scanned and came up with the P1811 code. I have it scheduled tomorrow for the PCS replacement.

[BNaylor]

Sounds good. Please keep us posted and how it turns out. Cost figure would be helpful too. Good luck.

[cef2lion]

Originally Posted by bnaylor

Sounds good. Please keep us posted and how it turns out. Cost figure would be helpful too. Good luck.

Dropped car off night before. Called my brother at noon next day and he said it was done already. Shifts smooth as glass now. They said they had to align front end cause of the suspension parts they had to remove. Was a bit tense when I went to pay the bill. Total was $262 dollars and included the scan from the Friday before. I was very pleased with the cost and end results. Wish I would have done this 6 months ago.

Craig

[panzer dragoon]

at $262 you did about as good as you could.

Get a pint of that LubeGuard from Napa ~$12. Change the tranny fluid and filter every 30-50k miles (take off the tranny pan and clean it) to keep the grit from circulating in that tranny.

Same for the (especially for the 3.5L) Intrigue engine. Change the oil and oil filter every 3-5K miles. I use Mobile1 (synthetic), I pay more initially, but it pays for itself over the long-term. Especially in the winter, synthetic oil is a dream. The 3.5L engine is a fine winter starter also = starts fine on the regular stuff (oil) also.