i have a 02 chevy silverado 2500hd ext cab with 4wd.when i push the button to engage 4wd a grinding noise comes from the front axle.fluid level ok.internal damage maybe?if so what is it and how hard .thanks

i have a 02 chevy silverado 2500hd ext cab with 4wd.when i push the button to engage 4wd a grinding noise comes from the front axle.fluid level ok.internal damage maybe?if so what is it and how hard .thanks

what happens when you place in the auto 4wd position ?
what color is the front diff oil ? what color is the transfercase fluid ? how often do you replace these fluids ?? do you drive on solid, dry pavement in any 4wd position often ?

dont have auto 4wd.change fluids once a yr.only time i use 4wd is when its snowing alot or on job site where mud or snow is a problem.not sure of color thanks

dont have auto 4wd.change fluids once a yr.only time i use 4wd is when its snowing alot or on job site where mud or snow is a problem.not sure of color thanks

the front diff uses 80-90wt gear oil, should be yellow..the transfercase fluid is tracII this should be a blue/purple color..

do "YOU" ,,,do this once a year, change of fluids ? if not It is possible the wrong fluids were used..check for color contamination..

yeah i change it regulary .yes the correct fluids r in it.i thought u ment what color when drained.sounds like metal on metal.i should go check 4 metal shavings in the oil.

yeah i change it regulary .yes the correct fluids r in it.i thought u ment what color when drained.sounds like metal on metal.i should go check 4 metal shavings in the oil.

metal shavings ! how big ? what componet..?

as far as color goes usually the front diff turns gray ,,,the transfercase black..when things start failing..with you fliud change intervals, it should be perfect...