Posted by Rooster on April 19, 01 at 10:06:57:
In Reply to: Need a quick response - rear differential fluid change posted by john on April 19, 01 at 08:51:52:
Rear differential fluid was changed in mine June 2000. It was done at a GM dealership. They used the differential fluid indicated in the owner's manual. The manual didn't call for any additive. Burb has run fine since.
1997 K2500, 7.4L, 4:1, G80