I have a 2004 GMC Sierra SLE 4wd With locking rear diff. I am replacing the gear oil in the rear differential. Does anyone know the correct amount of gear oil to add. The chiltons manual says to add to within 5/8" to 1 5/8" from the bottom of the fill plug. That is fine, but how can you measure that with any accuracy? There must be a known amount that will put you in that range. Thanks!
- posted
17 years ago