Trans on my 1999 3500 silverado is shifting late wont go into overdrive till 62 mph could it be the speed censor & where is it

-Sounds like shifting solenoid is not working properly. (It's inside the transmission valve body)


Good luck


Mai

overdrive is the fourth gear.D1,D2,D3,D4 now drive truck at 80 kmh
cruise at steady speed no fuel pedal movement, downshift from D4 to D3 you should feel RPM raise .. after push brake pedal a little you should see RPM raise 300 to 400 rpm.
shift pattern is 1st gear ,second gear,3rd gear and lock up(torque converter clutch). 4th gear with lock up
hope it helps

I'm afraid if you have not changed the trans fluid
every 3 years since the vehicle was new, on all your
vehicles,power steering as well,you will have to pull
it & rebuild it

Thats possible. A torque converter going bad would give you the same feeling as slipping the clutch on a manual shift.
Could also be the pump in the trans, or blockage in the valve body.
You did drive the truck for a couple of days before taking it on the highway ? And change the fluid in the trans ?

sounds like a bad ground connection.. find and secure all you can and reboot...good luck

sounds like over drive switch or transmision box

Do yourself a favor & get it scanned at transmission shop, or dealer & fixed as needed,(within reason) . Delaying it could cost lots of money. A rebuilt is about $1500-$2000.

have a 1998 K3500 silverado 4x4 with 454 motor and 4L80E transmission. I can not get over 55 or 60 mph. At that speed the transmission down shifts from 4th (OD) to 3rd. The speedometer also drifts from about 50 to 65. If I try to speed up it will down shift to 3rd. I have replaced the VSS on the trasfer case. Is there another speed sensor somewhere? Or could it be the TPS? The truck drives and shift normal up to this point. where should i look next. thanks

transmission shift solenoid is stuck open this is a common vehicle issue in automatics and not particular to any make or model vehicle 15 dollar part and arm and leg for labor if taken in

heres an idea to try
take out the transmission filter and replace with new one make sure to take not of any metal debry in trans pan this indicates the trans had sheered its gears down and a trans rebuild is needed
the transfilter needs to be changed at a certain milage interval they can get clogged up
there is a kit you buy for your truck at any parts store
its an easy change hour of time unbolt trans pan unbolt trans filter and put new one in
kit comes with new seals less than an hour you can do it yourself

to overdrive you would feel a difference in shift badley if it was that something to keep in mind

Your speed sensor in your trans. needs to be checked out sounds like its not working or not getting a good signal until its generating enough power and speed to start until it reaches 30 MPH. Check that out sometimes it could just be some dirt on it. It all makes sense the ABS light is on because its not reading the speed of the tires, and the AOD light is on because It has no idea when to shift into overdrive without knowing how fast its going. I sure Hope that Helps You Out, And Thanks, Bear001