Driving down highway at 65 MPH lost all gears?

GEORGE SMITH2

MEMBER
2001 CHEVROLET SILVERADO
5.3L
V8
4WD
AUTOMATIC
233,000 MILES

It didn't make any noise when it happened. All fuses are good. Replace both shift solenoids. TCC Solenoid replaces. New Transmission filter. New VSS. Scanned it multiple times in the last three weeks no codes for transmission or ABS to this topic. Yesterday I scanned it. 9 DTC codes came up for Transmission, so I figured it had to be electrical. So, I check to see if power was at solenoids in the pan of transmission and there was. Went to check vss. Nothing at all. What should I do now? Thank you for any help. I've been stranded in another state. Spent close to $2,500.00 on this issue. Only because of parts, taxi cabs, and multiple. I mean each trip to auto parts store $50.00. And on top of it I was very limited on tools. And trying to do this in a foot and a half of snow. I've got no one to look to.

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
42,833 POSTS

Let's start by clearing the codes, then turn the key on and rerun the codes, this will give us the hard code, which is what we will fix first, it sounds like the pressure regulating solenoid spring broke which is in the front pump cover. Please recheck the transmission fluid level with the truck on flat ground.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Also, if the transmission filter drops out of the transmission case it will cause this issue as well.

Check out this guide:

https://www.2carpros.com/articles/automatic-transmission-problems

and

https://www.2carpros.com/articles/how-to-service-an-automatic-transmission

Let's hope it is the filter. Check out the images (below). Let us know what happens and please upload pictures or videos of the problem.

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