P0717, P0716 Anybody?

[kreiderkid]

I posted about this previously but am still unable to fix the problem. I believe that my problem is not a bad sensor, but just a loose connector. I have had the sensors replaced yet still experience this problem. The problem is only intermittent and comes and goes when the car gets shaken up. The shifting becomes rough and the check engine light comes up. I am trying to find a picture, diagram, or explanation as to where each sensor is located and where the wiring harness they plug into is. I want to check all the connections before I assume it's a bad sensor. My thinking is a bad sensor would cause it to act up continually, not just occasionally like it does. And something simpler, like a wire, wouldn't cost me as much either! So if anybody has anything they think I may find helpful please, send it this way! This error code is causing me to think bad things about my car, and I don't want to do that!

[patelnj]

Transmission connect is located just below Throttle body on 3.5L. It's round connection. I also have same problem. I tried to take this connector out for examination. However, I am not quite sure how to pull it out.

[Marc]

P0716 = Too large a change in the trans input shaft speed in a short time.

P0717 = Too low a trans input shaft speed when car & engine speeds are high.

[aurora2001tan]

Sounds like slippage to me and you got the hard shift problem. I would buy a rebuilt transmission.IMHO Actually at 240 k youll never get enough use out of a rebuilt trans. I would personally start parting the car out. Please do it here in the marketplace. You do have 240k miles on it dont you? If you get a chance I would like to hear your maint history in those 240k miles. I think you got the most mileage here on the 2nd gen! Im trying to get to 300 k and thats it! Boda Bing! I installed a new trans at 145k miles.


there is a bulletin that talks about having both of these codes and they do talk about the 20 pin connector so the good news is to disc that and you can spray some brake cleaner around if its nasty. then blow off with air. The connector just pulls strait out. Dont forget after you do this. Disconnect the battery for a minute so the trans will relearn its shifts.

with 4T65-E, 4T40-E or 4T45-E Transaxle (RPOs MN3, MN7, M15, M76, MN4, MN5)

This bulletin is being revised to add the 2004 model year as well as the Chevrolet Classic model. Please discard Corporate Bulletin Number 02-07-30-022A (Section 07-Transmission/Transaxle).

Condition
Some customers may comment that the Service Engine Soon (SES) indicator is illuminated and that while the light is illuminated, transmission shifts are extremely harsh.

Cause
These types of conditions may be caused by an intermittent connection at the transaxle 20-way connector to the wiring harness interface.

Correction
If a DTC was recorded and the Freeze Frame and Failure Records back it up, a problem existed at one time with the wiring and/or the connectors between the transaxle and the PCM. Therefore, a thorough inspection and/or repair of the wiring harness at the transaxle 20-way connector for one or more of the following conditions may be warranted.

The wiring harness is stretched too tightly or other components are pressing on the connector body itself causing a downward pressure on the connector body and possible intermittent contact of the wiring terminals. Ensure proper clearance to any other components and wiring (i.e. hoses, battery cables, etc.).
The terminals are not fully seated into the cavity of the connector body.
The male terminals in the transaxle portion of the connector may be in the wrong position (i.e. bent).
The female terminals may be loose and are not making proper contact. Check the tension with the proper terminal tester from the GM Terminal Test Kit J 35616-A or J 35616-92. If the tension is low, replace the terminal. Do not try to re-form the terminal.
The crimp of the terminal to the wire may not be satisfactory (i.e. loose, over insulation, etc.).
The wiring connector is not properly seated and locked in position. Ensure proper seating of the connector into the transaxle and that the connector is properly locked in place.

[apostolakisl]

Anybody have a picture of the 20 way transaxle wiring harness? Or at least a really good description.

[oldwino]

Here's some info from an '02 FSM. The troubleshooting chart for 0716 and 0717 are identical. Hope this helps. Good Luck.

[kreiderkid]

Oct 12, 2009 19:43:08 GMT -6 aurora2001tan said:

Sounds like slippage to me and you got the hard shift problem. I would buy a rebuilt transmission.IMHO Actually at 240 k youll never get enough use out of a rebuilt trans. I would personally start parting the car out. Please do it here in the marketplace. You do have 240k miles on it dont you? If you get a chance I would like to hear your maint history in those 240k miles. I think you got the most mileage here on the 2nd gen! Im trying to get to 300 k and thats it! Boda Bing! I installed a new trans at 145k miles.

You're not the first person to tell me to part the car out! But, i could never do that to her. I know she has alot of miles on her but i like to believe there are a lot left in the car still. besides this issue the car runs pretty well, and is in pretty good condition. The day the car finally hits the point of no return I will most definitely part it out here online. But I hope that won't be for a long time. I also have the 95 deville which has 260,000 miles on it and soars like new. I come from a family that takes great care of vehicles. If you think that's alot, you should see the 21 year old chevy pickup! 1988 and runs perfectly.

Sorry about the car rant there lol. Can't help myself sometimes. Thank you for the helpful information! I'm glad you're all sending me this stuff.