Differential Noise
Thread Starter
Instructor
Joined: Apr 2005
Posts: 120
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From: Port Angeles WA
Differential Noise
Several weeks ago I changed the differential fluid using M1 75W90 and adding the two 4oz. bottles of GM positraction additive. Recently I've notice a sound coming from the rearend just after I start to drive away from a stop. This only happens when the car has sat for awhile and has been shifted from from forward to reverse and back again. Sounds like 
grrrr or whurr and only lasts for a fraction of a second. I'm hoping this is normal and I don't have anything to worry about. Right!
grrrr or whurr and only lasts for a fraction of a second. I'm hoping this is normal and I don't have anything to worry about. Right!
