I just replaced the trans in my 99 Blazer with one out of a bone yard. Took it out for a test drive and it will not shift out of 1st. drop it down in 2 & 3 and it keeps in 1st Over the years I have got 4-5 transmissions from this bone yard and they have all been good, so when they told me that it was good when they pulled it I belive them. What could have went out during the time they pulled it and I put it in??? Also the trans fluid level it ok and all plugs are plugged in.


Also no codes were stored during after the drive..

Thanks,

Charles

 

I had the same problem with my transmission and it turned out to be the governor. However, my truck is a '91 with the 700r4 transmission, your truck has a different transmission, not sure which (4L60e?) which is basically the electronic version of what I have, I believe anyway. swartlkk help me with mine, he may be able to help you.

 

A salvage yard will normally have a 30 day exchange policy. They should have stamped the new tranny with their punch-mark and given you a reciept. The only problem is you are gonna have to do all that labor again and hope you get a good one next time.

 

Is the shift linkage adjusted properly? PCM reset? Does it just rev out with no indication of shifting? Any codes present when you scan the PCM?

 

Thanks,

It was a bad speed sensor..