I have a Chevy Silverado 3500 dually 1997 7.4 liter engine with an Allison transmission transmission not shifting out into last gear
Is the transmission fluid level okay? Remember to always rule out the obvious first.
Yes just will not Chang into last gear but will go into passing gear
Passing gear is just downshifting 1 gear.
This is a gas burner
You should have a 4L80E transmission. It is NOT an Allison. If you push the overdrive button will the light come on?
No overdrive button
Looking for a Used C/K 3500 in your area?
CarGurus has 226 nationwide C/K 3500 listings starting at $2,995.
Search Chevrolet C/K 3500 Questions
Chevrolet C/K 3500 Experts