Transmission Service?
I have a 2013 GMC Sierra 2500HD 2WD with 3.73 rear. 32K miles with 20K of that towing a 6K (loaded) TT. I carefully monitor trans temps when towing and it runs in the 145 to 170 degree range almost al...
Forum Discussion
while I agree excessive fluid changes are not necessary, I'm becoming a firm believer in an initial change at 5k then half the recommended schedule.
for example: front and rear diff, transfer case for a gm HD truck is 100k, I changed initially at 5k and the rear was black and a lot of shavings. changed at 50k, dark brown, changed again at 90k dark brown.
I could go 100k on the diff's but based on what comes out of my vehicle I wouldn't want to.
I should add, the most often over looked fluid is brake fluid, I routinely flush that every 50k, or 3 years.
for example: front and rear diff, transfer case for a gm HD truck is 100k, I changed initially at 5k and the rear was black and a lot of shavings. changed at 50k, dark brown, changed again at 90k dark brown.
I could go 100k on the diff's but based on what comes out of my vehicle I wouldn't want to.
I should add, the most often over looked fluid is brake fluid, I routinely flush that every 50k, or 3 years.
