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What's up with the tranny already??

2000 GMC

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2000 GMC Enthusiast

2000 GMC

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Posted

I was at a stop light today.  When the light turned green I gave it gas and the truck just stood there.  I took my foot off the gas pedal then gunned it again and it moved just fine.  Did it just that once no more problems the rest of the day.  Any ideas what would be the problem?   Truck only has 19,600 miles on it.  Thanks in advance   ???

Shaners Senior Enthusiast

Shaners

Posted
Posted

Mine did that in my HD and I took it to the dealer.  It was doing it about once a day and both the dealer and the tech had it do it to them too.

 

They found a reprogram for the tranny and downloaded it to my truck and it hasn't done it since.

 

I have about 4400 miles on my truck and the reprogramming was done about 1000-1500 miles ago!!!

2000 GMC Enthusiast

2000 GMC

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  • Author
Posted

Thanks Shanners. I've only noticed it this one time.  I'll drive it for a couple of more weeks and see if it does it again.  If it does I'll take it to the dealer.

Shaners Senior Enthusiast

Shaners

Posted
Posted

It's kind of a weird feeling, like you are in neutral and then pull it down into drive...  usually that was the way mine was.  The truck would free rev and then slam into gear, but there was some instances where the truck felt like it was starting in 2nd and then would drop into first once it started to roll...

  • 1 month later...
2000 GMC Enthusiast

2000 GMC

Posted
  • Author
Posted

Truck did it again today, after starting it up and then putting it in reverse it just stood there. I had to put it back in park then in reverse again before it moved.  

It's going in on Tuesday for the ext cabs windows making noises on the highway.  I'm going to ask them to check out the transmission.  This is one of those times that I'm considering the extended warranty.  :D

RyanbabZ71 Senior Enthusiast

RyanbabZ71

Posted
Posted

Mine has doen this about 8 times in 26K miles.  Hasnt done it in quite awhile (knock on wood).  I have discussed this with a few people and it sounds like a new valve body may be the solution.

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