Badkarma Posted September 27, 2006 Report Share Posted September 27, 2006 I'm getting ready to do the fluid change on the rear end since I'm close to 500 break in miles on the truck. I just looked the other day and the rear has a drain plug and fill plug * yay no mess!* Anyhow, Do I just fill until it trickles out the fill hole? I've done a few searches and its close is I can find it takes between 2-3 qts of fluid. I'm guessing that is how I would do it but I just want to make sure. Quote Link to comment Share on other sites More sharing options...
Outsource Posted September 27, 2006 Report Share Posted September 27, 2006 I just took mine to the dealer this morning to have the oil /filter change and the rear diff. fluid changed. I have 800 miles. Quote Link to comment Share on other sites More sharing options...
misterp Posted September 27, 2006 Report Share Posted September 27, 2006 Yes you pour GL-5 into the fill hole until it starts to dribble out the side; expect it to take 3-qts. Mr. P. Quote Link to comment Share on other sites More sharing options...
Badkarma Posted September 28, 2006 Author Report Share Posted September 28, 2006 Yes you pour GL-5 into the fill hole until it starts to dribble out the side; expect it to take 3-qts. Mr. P. <{POST_SNAPBACK}> Thanks misterp, I cant wait to pop the service cherry on the truck! *dose happy dance* Quote Link to comment Share on other sites More sharing options...
Outsource Posted September 28, 2006 Report Share Posted September 28, 2006 I just took mine to the dealer this morning to have the oil /filter change and the rear diff. fluid changed. I have 800 miles. <{POST_SNAPBACK}> Got the truck back from the dealer this afternoon. Everything A-OK. Quote Link to comment Share on other sites More sharing options...
Badkarma Posted October 1, 2006 Author Report Share Posted October 1, 2006 Whoohoo! Got my first chore with the truck done today. First oil change and changed the lube in the diff. Man this thing is so easy to work on compared to what im used to. Only supprise was the diff to about 3.5 quarts, that threw me a little. Made sure I did the figure 8's as advised, everything feels good. When I switch to syn at about 3000 I think I will have a tranny service done then also and refill with syn there to. I figure its like chicken soup, it cant hurt! Quote Link to comment Share on other sites More sharing options...
Big O Posted October 1, 2006 Report Share Posted October 1, 2006 I thought we decided that you are supposed to leave the fluid down a little ... there was a change and ... not to fill until it runs out? Quote Link to comment Share on other sites More sharing options...
mcwarren Posted October 1, 2006 Report Share Posted October 1, 2006 I thought we decided that you are supposed to leave the fluid down a little ... there was a change and ... not to fill until it runs out? That's correct and the fluid specification is for 75W-90 synthetic. From GM SI info for the 2006 Silverado is: SAE 75W-90 Synthetic Axle Lubricant GM part # 12378261 The proper level for the 1500 Series is from 5/8 inch to 1 5/8 inch (15 mm to 40 mm) below the bottom of the filler plug hole. Quote Link to comment Share on other sites More sharing options...
drako Posted October 1, 2006 Report Share Posted October 1, 2006 so....from what i gather we dont top it off but just barely top it off....and this is for all Silverado (SS) regardless of year? or 2006 *bear with me everyone just making sure there is a clarification* Quote Link to comment Share on other sites More sharing options...
mcwarren Posted October 1, 2006 Report Share Posted October 1, 2006 so....from what i gather we dont top it off but just barely top it off....and this is for all Silverado (SS) regardless of year? or 2006 *bear with me everyone just making sure there is a clarification* The 2003 GM SI shows the same info as 2006. These trucks leave the factory with synthetic fluid in the rear axle. GM SI states to fabricate a dipstick from a pipe cleaner or similar material with a 90 degree bend in the dipstick. The fluid level is to be at the distance specified below the bottom of the fill plug hole. That's correct and the fluid specification is for 75W-90 synthetic. From GM SI info for the 2006 Silverado is: SAE 75W-90 Synthetic Axle Lubricant GM part # 12378261 The proper level for the 1500 Series is from 5/8 inch to 1 5/8 inch (15 mm to 40 mm) below the bottom of the filler plug hole. Quote Link to comment Share on other sites More sharing options...
Badkarma Posted October 1, 2006 Author Report Share Posted October 1, 2006 I'll recheck the level in the moring and see were it settles down at after having beem drivin a little bit. If its a little high, easy enough to get extra out to avoid excess foaming. Quote Link to comment Share on other sites More sharing options...
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