2006 Silverado 2500 HD 4X4 Transmission Temp and Maintenance

[DirtyLarry]

That is a good question. It seems everybody has a different opinion when it comes to synthetic fluids. I personally do not use any synthetic lubes in any of my rigs but I have not heard of any issues where the synthetic fluid would cause a leak. However, I have heard the stories of converting to synthetic too soon can cause components to not “break in” but I don’t have any factual information to back that story up either way.

Actually, 2006 was the first year of Dexron VI transmission fluid in the 4L60E and 4L80E transmission which I believe is a full synthetic transmission fluid but you might do some research on Dexron VI to make sure it is as it could be just a synthetic blend (either way is good). In 2006 Allison did indeed changed to a full synthetic fluid in their transmissions called Transynd. Personally, I don’t see a need to change the transmission fluid to synthetic regardless what year the truck is as long as you follow the schedule maintenance and change the fluid and filter every 50,000 miles.

Yes, there are grease zerks in the lower ball joints. To get to the right lower ball joint grease zerk turn the wheels all the way to the left and get to it from the back side of the wheel. The zerk is on the top side of the ball joint body just below the outter front axle CV joint boot. Then turn the wheels all the way to the right to get to the left lower ball joint grease zerk. There are actually 11 grease zerks in the front suspension of the GMT800 trucks. Upper and lower ball joints (4 zerks), inner and outer tie rods (4 zerks), an idler arm on each side (2 zerks) as well as a bell crank (1 zerk) on the right side that is very well hidden up under the plastic splash shield. Most quicky lube shops only grease the ball joints and outer tie rods because they do not realize there are more zerks there.

Have fun with that...