2000 Venture Hard Shifting

[mshatn]

Originally Posted by Allbert

I found a local transmission shop that replaced the PCS in our company van (Venture) for only $250 in labor. The part can be bought for around $29 via GMpartsdirect.com. The part number is 10478146. Failure of this part is not always accompanied by trouble codes. Not replacing a faulty PCS and continually driving with harsh shifts can lead to transmission damage. By far, the best post on the problems with this part is over in the Buick Century forum. http://www.automotiveforums.com/vbul...ht=pcs+problem

I just went to some local mechancst, The computer found some code -sorry I do not have the number- but is says some thing like this "intemetnet circuit voltage ...- it seems this some sensor- this is what he wrote on the receipt.
Any way it cotsts me 40$ for part + 40$ labor.
I did not check the car yet because it happens only when I travel for 10-20 miutes on the highway
I hope this helps

[jdaa]

Originally Posted by 304617

My van intermittently has very hard abrupt shifting in all gears. I was driving yesterday and it was fine. Stopped to eat, got back in the car and it started shifting hard. Pulled over to the side of the road, switched the car off and waited about 2 minutes, started it back up and it ran perfect. It has only done this twice to me and about 3 times with my wife. Any ideas. I sure would prefer to fix this myself.

We replaced the MAF sensor and it fixed our shifting problems...

[mshatn]

Originally Posted by jhong1226

i have the same problem with my 00 venture, hard shifting with unusual sound, turn engine off bout 1 min and then it will run fine. sometime it does it again for 2 or 3 times more.

just doing usual check shows error "sorry i do not have the number"
it says some thing like this: intermitnt circuit voltage ..."
the part was 40$ and the labor 40$ the van seems to work fine no strange sound no harsh shifting

[jhong1226]

jdaa , did you had a check engine light before you replaced the MAF sensor?
I cleaned the MAF b4 and did not help. maybe it really need to be replaced but ive scanned it for codes but it did not had 1.
i replaced instead the MAP today for I have a spare.
hope this will solve it if it does i will make a post.

[jhong1226]

MAP sensor didnt work, well off to the PCS.

[skiboyne]

This is a common problem on these trannys. I'm 99% sure you have a faulty Pressure selonoid inside the transmission. The cars computer picks up a slip that isn't really there, and compensates for this by raising the pressure needed to shift your transmission. This leads to a hard "bumping" shift. It is harmless, just annoying. To verify that this is the problem before you spend any money throwing parts at the car, take it to a transmission shop or garage that has a tech-2 scanner. This will be able to pick up the fault if it is there, for some reason this problem does not set a code that normal snap-on type scanners car read. My local garage here will fix it for 250 including the part, I'm in Michigan just to give you a cost comparason.

[jhong1226]

Thanks.
Any1 know where or has instructions on how to change PCS in 00 Venture, id really appreciate it.
im going to see if i can do it myself.

[mshatn]

Originally Posted by Allbert

I found a local transmission shop that replaced the PCS in our company van (Venture) for only $250 in labor. The part can be bought for around $29 via GMpartsdirect.com. The part number is 10478146. Failure of this part is not always accompanied by trouble codes. Not replacing a faulty PCS and continually driving with harsh shifts can lead to transmission damage. By far, the best post on the problems with this part is over in the Buick Century forum. http://www.automotiveforums.com/vbul...ht=pcs+problem

I have checked my 00 venture van (76K millage) while it was giving a hardshift which was acompained by a sound (whining sound!! not sure of the name)
any way it gave this code "1811" "maximum adapt shaft..." .
Two of mechancist told me that ti needs to be rebuild, one told me that it may be "valves prbolem" and we need to check the fluid presuure.!!!


* they hooked the computer while driving it, to chek for the selonoids and the tolde me that they are fine since it is goes on and off while shifting...
other people told me even though we need to take the selonoid out and give ti a look...

I am not sure what to do please help me
Thanks

[jhong1226]

I dont exactly know how much it cost to rebuild the trans but if it is expensive, id rather trade in the venture for a nissan or toyota minivans. my blue book value for this 2000 venture is only 5k. i hope the tranny could hold up for a couple more months.

[jhong1226]

I dont exactly know how much it cost to rebuild the trans but if it is expensive, id rather trade in the venture for a nissan or toyota minivans. my blue book value for this 2000 venture is only 5k. i hope the tranny could hold up for a couple more months.

[skiboyne]

The maximum adapt shift deals with the selonoid. A fulty selonoid detects a slight slip in the transmission that may not be there, to compensate it raises the shift pressure, which in turn gives you the hard bumping shift. If you replace the selonoid it will take care of the hard shift problem. As to your transmission needing to be rebuilt I don't know because the mechanics that looked at your vehicle may have found another problem. If they are saying it needs to be rebuilt because of the selonoid or max adapt shift, no way.

[mshatn]

Originally Posted by skiboyne

This is a common problem on these trannys. I'm 99% sure you have a faulty Pressure selonoid inside the transmission. The cars computer picks up a slip that isn't really there, and compensates for this by raising the pressure needed to shift your transmission. This leads to a hard "bumping" shift. It is harmless, just annoying. To verify that this is the problem before you spend any money throwing parts at the car, take it to a transmission shop or garage that has a tech-2 scanner. This will be able to pick up the fault if it is there, for some reason this problem does not set a code that normal snap-on type scanners car read. My local garage here will fix it for 250 including the part, I'm in Michigan just to give you a cost comparason.

* Can you pleasse give us the exact name for the scaneer to ask the dealer if he is using that one or not because in mine he hooked with some scanner and he told me that the selonid are fine ( do they chek the selonids while the car moving..)

Thanks
In what area of michigan is the shop you went to

[skiboyne]

The Scanner is called a Tech 2, It's black with a bluish colored screen. It's the Scanner that the GM Dealer garages use and is the best one out there, the only reason all garages don't use it is because it costs in the neighborhhod of 8,000 dollars. I'm in saginaw michigan pretty much the middle of the state.

[jhong1226]

has any1 tried to replace the PCS themselves? if so is it very hard to do or just time consuming?

[MIBPreacher]

You might think Im crazy, but has anyone tried this? I went to West Virginia for thanksgiving '05 and on the way back, I was able to maintain let say a "Decent" level of "Speed" "All" the way back to Indiana, stopping only momentarily to use the restroom or get snacks and then back on the highway again. We got home in record time it seemed, and went to sleep. After unloading the van the next day, I decided to drive it to work. The transmission was bucking like a horse, I had to stomp on the gas to get it to shift out of 2nd. Guess what the problem was?

Ignition Control Module was sticking, again.

See the last time that happened, the stupid 30.00 sensor was stuck in the opposite direction and wouldnt let my van start. I replaced it with one from Autozone and started right up. Now after my trip, I decided to buy another and I got this one from Pepboys. I put it in, shifts like a dream. Honest to God, it fixed my problem and hasnt came back yet. I see now why there is only a 90 day warranty on them.