1994 chevrolet astro van makes noise in the rear end

I would say it could. Especially for in town driving. It would help with the "searching for the right gear" that sometimes occurs at less than highway/open road speeds.

Also for any towing or heavier loads I would recommend NOT using overdrive.

For open road/highway I would use overdrive to get better MPGs.

Hope this helps.

put high quality gear oil in the metal filler cap on the rear end if that dont work it could be that your rear end is shot

at you wheel hub their is a sensor ( you will see electrcal wires runnung from the back of the hub) check each wheel to see if their is a bair spot and its grounding out

Rear end is a lockup dif. This couples both wheels.It has clutches that allow inner and outer weels to turn at different speeds when going around corner, thus eliminating most tire scrub. If noise is coming from dif. change dif oil and redress clutches.Driving in a straight line with a lockup dif. would not normally be noticed,because both rear wheels are travelling at the same speed.

Did you find out what it was? I have the same thing on my 1999 Astro van. It seems like an electrical issue and it varies when I press the gas. I'm thinking fuel pump. It used to make the noise and then stop. Now it doesn't stop.

i am not mechanic but realise logic control senses excessive rear wheel spin and transfers some torque to front wheels. try quick take off on gravel road to see which wheels dig in or have friend spot if front wheels are driving when they should be. could be simple corrosian at wiring harness. unplug and spray with contact cleaner and re connect and re try. this wont cost you anything.

need to checkm ilder arms also rotatem tires agin

run your hand across the tire tread itself and check to see if the tread is feathered or cupped. this will cause road noise. Also could be a wheel bearing worn.

sounds like a possible wheel bearing issue or brake pad issue!!! i would definatly have this looked at, but in the meantime, make sure that it isnt just a backing plate contacting the rotor ...hope this was helpful!!

Hey First thing I always look for is cheapest thing to repair or look at .. Make sure your tires are not cupping .. or make sure they are wearing good and smoothe all the way around .. this can make a terrible noise if they are cupped or worn improperly.. then I would Jack up one side and shake the rear wheels make sure those bearings are tight feeling .. you should be able to tell if they are loose this way ... I dont know how many miles are on your van but usually the drive line is not the problem.. this is probably last thing you need need to shake and see if there is play in it.. Holler if you need more and thanks Jerry