1998 blazer tranny troubles

[quote:869d7581ee="baja457"]hi, i have a 1998 blazer 4x4 4.3 v6 with 183.000 miles tranny has been rebuilt and now it has a check engine light on and will only shift out of first gear only if you let up on accellerator and will not go in to overdrive can this be the shift sensor and if so where is it located on the tranny? thanks john[/quote:869d7581ee]

hi john
since u have check engine light on u should have it scanned
By u scanning for codes will pin point the trouble area and make it a lot EZ and cheaper to repair
you can post the code and we will help
good luck