P0740 code.

[kennythewelder]

Hmmm, sounds like it might be 4L80E time....

No, no way. I can't afford that, rite now. IMO, I think the trans is fine. It's an electrical issue. At least I hope, and way.

 

[kennythewelder]

If the trans is slipping, it's in trouble.

If this is a problem like the bulletin shows, in "limp home" mode going forward, it should be in 3rd gear. You'd have really-crappy acceleration, and the converter would be working pretty hard--but short trips should be OK.

Hummm, wonder if I could manually shift, into 1st. Well, I have the weekend to fool with it.

 

[kennythewelder]

No, no way. I can't afford that, rite now. IMO, I think the trans is fine. It's an electrical issue. At least I hope, and way.

Well, I am having thoughts of salling my truck. Between the Vette, and the truck, I just can't keep up with it all. Damn I need to retire. February can't get here fast enough.

 

[yevgenievich]

Back a while ago I had a daily with 4l60e stuck in 3rd gear due bad internal seal. Remained half daily for two more years until had a chance to fix it. Just took it easy.

 

[kennythewelder]

So, this is what I don't understand. Why isn't the tach, and speedo not working. This just started when the CEL came on.

 

[Schurkey]

So, this is what I don't understand. Why isn't the tach, and speedo not working. This just started when the CEL came on.

Review Post #5. "Instrument cluster inoperative" is one of the symptoms listed in that bulletin.

 

[yevgenievich]

So, this is what I don't understand. Why isn't the tach, and speedo not working. This just started when the CEL came on.

Your case sounds like electrical power loss causing it to be in one gear

 

[62barsoom]

Well, I am having thoughts of salling my truck. Between the Vette, and the truck, I just can't keep up with it all. Damn I need to retire. February can't get here fast enough.

Yeah I did that retire thing. I'm working harder now, than before. Don't retire to a farm.

 

[kennythewelder]

Update, success. It was the ingotion switch. Truck is back up and running like it should be again, and I also got the Corvette back up and running too. Fresh rear end rebuild, on the Vette.

 

[kennythewelder]

Yeah I did that retire thing. I'm working harder now, than before. Don't retire to a farm.

I live in a small city. About 180,000 people, but the metro area is around 650,000, and Lafayette it the biggest area. Lots of small towns around here. Once I retire, I will have plenty to keep me busy. My wife has been writing that honey do list, for years,,, LOL. But really, I have a bunch of home improvements to do, and then, there is the 1979 Corvette to keep me busy, along with the 97 Silverado.