Transmission - Hard Shifting 2004 Venture - Chevrolet Forum - Chevy Enthusiasts Forums

Go Back   Chevrolet Forum - Chevy Enthusiasts Forums > Past Chevy Truck, SUV & Vans > Venture
Log In 

Venture 1997-2005
This minivan from Chevy offers a sporty look as well as all of the modern additons of the minivan market.
Platform: U-Body

LinkBack Thread Tools Search this Thread
Old 10-10-2010, 09:44 AM
CF Beginner
Join Date: Oct 2010
Posts: 3
Unhappy Transmission - Hard Shifting 2004 Venture

My 2004 Venture transmission starts to shift hard after driving about 8 miles(14km). I noticed if I shut the engine off and then restart it immediately the hardshifting stops. The transmission/engine does not really have a chance to cool down. This tells me that it may have something to do with the computer. Its almost like it is resetting itself after I shut down and restart.
Anybody have any clue??

Dan in Canada
Reply With Quote
Old 10-25-2010, 11:03 PM
CF Beginner
Join Date: Oct 2010
Location: Brigham City, UT
Posts: 6
Default Venture Hard Shift

When you shut off the engine, pull the key and get out of the van, the computer resets the drive cycle. When you start the van and start moving again the computer checks the length of time it takes for the trans to complete a shift. If it's longer than 65 milliseconds, it increases the pressure. It will do this 5 times (so I've been told) before it gives up and changes the pressure to maximum. This makes the pump whine and the shifts jarring. The computer will store the code P1811 each time this occurs.

I know you already found the thread that explains this, but I'll put a link to it for anyone else who might be having this problem.
Reply With Quote
Old 10-26-2010, 12:24 PM
CF Beginner
Join Date: Oct 2010
Posts: 5
Default hard shift solution

The problem with the transmissions in these vans that cause them to hard shift is the pressure regulating solenoid. It cloggs up and causes this symptom usually between 60-100k miles. I was lucky and was able to do a transmission service and flush on mine and it removed the build up and has been shifting fine now for months. You may have the same luck. If not the solenoid will need to be replaced which is a fairly involved job involving the removal of the cover on the drivers side of the transmission. If changing the filter and flushing it doesn't get rid of it you may want to try an additive before giving up on the easy way. good luck!
Reply With Quote
Old 07-11-2014, 03:28 PM
CF Beginner
Join Date: Jul 2014
Posts: 2
Default Venture Van, Montana Van shifting hard.

Hello everyone. I have owned 8 of these vans over different years and I have found a solution to the hard shifting that does not require an expensive fix.
The pressure control module is the problem but it is getting a signal from a dirty Mass air flow sensor.

Now all you have to do is buy a spray can of mass air flow control cleaner and take out your MAF sensor and spray clean this really well and put it back in and it will no longer send your computer a signal saying something is wrong and screw with your pressure control module.

It is a special cleaner that leaves no residue on the MAF sensor readily available at Canadian tire or parts store.

I know this might be hard to believe but believe an experienced Venture owner. Been there done that.

The MAF is in the tube from your air cleaner to the intake.

Hope you have success.
Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
2004 Impala transmission shifting issues Navy Man Impala 32 07-28-2015 02:05 PM
Transmission shifting hard daanders Tahoe & Suburban 26 07-01-2015 12:40 AM
2004 Malibu - hard shifting in all gears - only happened once rtarb41323 Malibu 0 09-19-2012 04:48 PM
Transmission shifts Hard - 04 Venture DanOttawa General Tech 0 10-11-2010 08:59 AM
Shifting hard...2nd to 3rd...slight "clunk" noise..?? Summett Tahoe & Suburban 8 02-13-2007 03:59 PM

04, 2004, chevrolet, chevy, flush, hard, location, shift, shifting, shifts, solenoid, transmission, uplander, van, venture

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On


All times are GMT -5. The time now is 07:51 AM.