TRANSFER MILES - Cars & Trucks

They change it after a certain thousand miles. Read the manufacturers recommendation. It is a good point to have it changed every 30000 miles.

The 04 was pretty straight forward.

Change the oil and filter when the display tells you to. (Don't forget to reset Oil Life system!)
when the display tells you to change engine oil... Do the following as well:
~Lube Chassis Components
~Check Tires for Air and Damage
~Inspect Break System
~Check Engine Fluids and Washer System
~Check Power Steering System
~Check Wiper Blades
~Check Restraint System
~Lube Body Components (See manual)
~Replace Cabin Air Filter (Located in firewall on passenger side.)


Every 25K miles do the following:
~ Inspect Fuel System, Exhaust System, Accessory Drive Belts for damage or wear.
~ Replace Air Cleaner

Ever 50K Miles
~ If used for Towing - Replace Transfer Case Fluid :: If not change fluid ever 75Kk miles.

Every 100k Miles
~ Change Automatic Transmission Fluid and Filter
~ Change Automatic Transmission Fluid and Filter again at 150k if heavy service
~ Replace Spark Plugs

Every 150k miles
~ Change Engine Coolant (Or every 5 years which ever comes first!)
~ Replace Engine Accessory Drive Belt

optional y are supposed to change the transfer case fluid every 50k if towing

The Transfer case should be flushed and new fluid added every 30,000 miles, so yes you are overdue.

It's probably the chain in the transfer case. I had mine replaced at 150,000 miles and it cost $1500.00 to do a full rebuild. And that included them removing and installing the transfer case and a new yoke for the driveshaft.( Because the play in the transfer case grooved the old one.)

Check oil level in transfer case, all and I MEAN ALL GM transfer cases will and I MEAN ALL will leak after high miles. Above 80k miles. Check for leak on backside of t/case,mid/lower pass.side.

THE TRANSFER CASE MOTOR IS NOT WORKING TO INGAGE 4 WHEEL DRIVE. CHECK WITH DOOR OPEN WHEN YOU PUSH 4 WHEEL SWITCH YOU SHOULD HEAR MOTOR INGAGE 4 WHEEL DRIVE. IF YOU HEAR MOTOR BUT STILL NO 4 WHEEL DRIVE THE GEAR ON MOTOR COULD BE DAMAGED. REPLACE TRANSFER CASE MOTOR.

You should have the trans., transfer, and diff. serviced, if you got an owners manual it will tell you in there at what intervals or the milage it should be done at,mostly around 35 to 50.000 you got that kind of milage on it and its never been done you better do it, the oils do break down and don't last forever, it could cost you more in the long run.

I just had my transfer case rebuilt on my 2002 2500 silverado duramax. They told me that the spring that holds the pump inplace in the transfer case wore a hold through the case. He said this was common on these transfer cases. Chevy has not acknowledge the problem. He designed a steel plate, with flanges that holds the pump in place and will not wear a hole in the case again. And as far as the post to engage it once a month, the chain turns even when in 2WHL drive.

These transfer cases do not have plastic pumps. Do have the transfer case looked at by Jeep tech, it could be as simple as an adjustment on the lever.

when driving forward or backward there a loud metal hit metal sound causing the vehicle to **** when in motion.