Loosing VSS signal causing speedometer non-op and shifting issues

[Billme]

Not the same gen, but I had a speedo that played around randomly and a flashing O/D off light (trans in limp mode) after a rebuild. I had to change both the shaft speed sensor and its connector. Make sure the hole into which the sensor is dry and fully cleaned of any debris, and only apply oil on the sensor's o-ring. Also, the connector must be fully clicked and attached onto the sensor, and when replacing the connector, make sure it's the exact same shape, since I faced a huge problem in finding the same shape and found it on Temu of all places (it works perfectly fine). I used a Dorman sensor that works great. If the trans is in limp mode, the car might still drive relatively normal, but the trans overheats like crazy and burns off oil. Hope that helps.

Thanks for the info, I was crisping for straws on the speed test, it came back before I could get do it.. So I noticed I would scan and do a hard reset, then crank, and go drive any speed, and would get back and run another scan, which was good.. I then shut it off and re scanned and the PO500 showed up.. So, I was thinking something is upsetting the GEM, so I got to thinking that main connection is the ignition solenoid, so I changed it.. So far, it hasn’t showed up.. It probably will since I said this here lol.. I sure hope it is, I need to move on lol
BTW, you are correct on that weird limp mode, I’m just glad someone else recognized it.. It’s almost normal, but the only difference is on mine is the shifts take a little longer, and you have to give it more gas to get it going..

 

[jr1under]

So, I was thinking something is upsetting the GEM, so I got to thinking that main connection is the ignition solenoid, so I changed it.. So far, it hasn’t showed up.. It probably will since I said this here lol.. I sure hope it is, I need to move on lol

It's always seemed that a flaky GEM is somehow involved with this behavior. Easy observation but what's flaking it out...? A while back, there was a comment something like "maintaining 25 year old vehicles is not for the easily discouraged." You are definitely not easily discouraged and I've learned a lot just by following along!

 

[Billme]

It's always seemed that a flaky GEM is somehow involved with this behavior. Easy observation but what's flaking it out...? A while back, there was a comment something like "maintaining 25 year old vehicles is not for the easily discouraged." You are definitely not easily discouraged and I've learned a lot just by following along!

Thanks Jr1under, so far so good.. I even took it out in a storm, and stopped and shut it off several times, and everything is still good..
I believe I can get on to the next problem now..
I’m slow, but I eventually get to my destination lol
Have a good one friend