No reverse and whining

1998 CHEVROLET TAHOE
22,127 MILES • 5.7L • V8 • 4WD • AUTOMATIC
Avatar
HARDCASE02
  • MEMBER
  • 1 POST
Reverse went out and whining in park and neutral. No check engine light. Changed out filter and still some results. Fluid wasn't really bad for 22127.
Feb 15, 2022 at 9:09 PM
Avatar
JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,244 POSTS
Hi,

The idea that you lost reverse and are hearing a whining leads me to believe there is a line pressure issue. Reverse gear requires the highest amount of line pressure to operate. By chance, did you flush the transmission cooler?

I will be happy to provide directions, but I first need to identify which transmission you have. It will be either a 4L60E or a 4L80E. If you look at the pics below, it shows where to check to identify which one you have.

Let me know when you get a chance.

Take care,

Joe

See pics below.
Images (Click to enlarge)
Attached Media
Attached Media
Feb 16, 2022 at 9:58 AM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle