Jump to content

1993 Silverado K1500 DTC 59

Adam Placker

By Adam Placker
in Ask A GM Technician

Recommended Posts

Adam Placker New Member

Adam Placker

Posted
Posted

Hello there!

 

My 1993 Silverado K1500 is throwing code 59. From what I can find this indicates that the transmission fluid sensor circuit voltage is high, which would mean that the sensor is telling the computer that the fluid is too hot? If I clear the codes and start the truck cold, it immediately throws this code. So I know **for sure** that the transmission isn’t actually hot. My question is, how should I go about diagnosing this? Is the sensor external and is there a way I can test to be sure the wiring is right? Or is it internal and should just be replaced?

 

Appreciate any pointers you can give me.

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • mighty K20
      72 C10 headers question

      By mighty K20 · Posted

      FYI, I used sq body headers on my 72 and they were a perfect fit with zero clearance issues with the rods and Z bar for the clutch  I agree with post on worn mount rubber 
    • KARNUT
      Navigating senior years.

      By KARNUT · Posted

      I do most of my yard work before 10. My summer walks are usually at Kroger’s. Inside and yes I’ll do light shopping. Usually by noon you don’t want to be outside from June to September. The mail box is a good walk. I’ll walk there about 3 times before the mail comes. My house has two floors if I feel I need to move I’ll do the stairs. I’ll walk down the lane to our rent house with clippers trimming branches along the driveway. There’s always something to do. 
    • Grumpy Bear
      Navigating senior years.

      By Grumpy Bear · Posted

      There is a sign at my chiropractors office that says, "Don't quit, take a break." Sound advice.    On a 65 degree day (F) I can still work pretty darn hard (I'm 72). On a 85 degree day with a good deal of humidity it takes me three days to do what in took at 65 degree in three hours. If I work to muscle exhaustion (back) it will take me days more to recover. Taking breaks to prevent that is most useful. A lift belt has been very useful in preventing both.    Minister was giving a talk the other night where he was speaking of age and he used a clock to illustrate the human lifespan and it's ability to task. 1 to 45 was the second hand, scurry about. 46 to 70 the minute hand. Slower but...71 and up the hour hand...Hummm....until that talk I felt more like the minute hand. 😭   Then he says, the most useful hand on the clock is the hour hand. Without it you can't tell time. (Hour of the watch). I felt a bit better knowing we over 70 are useful. 🥹
    • mysery1
      Navigating senior years.

      By mysery1 · Posted

      I still do oil changes on our 2 vehicles and my motorcycle. I have a robot mower for the yard but can't use it in my backyard because my wonderful dog keeps digging the guide wire up so I have to push mow it. Not much of a walker especially during the summer, just to hot. I will ride my e-bike almost daily which helps to keep my knees and hips loose and helps with my balance. That's my story an I'll stick with it. We have been in the mid to high 90's with a feel like temp of 105 to 109 for the last month with no rain. We finally got some rain which cooled it off but were still stuck with the humdity. I do pace myself and that's why it takes me 2 days to do something that used to take a couple of hours.   Peace
    • DustMcGrath
      Transmission Temperature Hitting 220s

      By DustMcGrath · Posted

      @newdude great info, thank you!   So opening the thermal bypass valve early (or all the time) would cause temperature to rise more slowly, but above 194F there would be no difference from normal operation?   It seems like the only practical ways to bring down the peak temperature would be to improve the oil-air heat exchanger in some way or increase fluid capacity?

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...