99 sierra hard shift

Fastnloud5.3

Rustbucket
Jan 22, 2015
73
0
0
Mitten
5.3 1500 4x4 Shifting hard between first and second when warm. past owner had it flushed at 160k like a fucking retard so I'm fearing the worst. Im getting an maf code but no tranny codes. Any ideas?
 

marc

WhiteSilvy
May 16, 2013
5,303
123
63
29
canada
not that it really relates but by old Hyundai sonata had a bad MAF and it shifted really hard so i fee like it is possible that that is the problem.

i would look into it before diving into a trans build.

:up: