Where is the differential refill plug on a 1987 camaro?
passenger side of the pumpkin. use a 3/8th ratchet to remove it.
Assumeing you are at the rear of your van, if you crawl under the rear bumper you will see the rear axil, the center of that axil in the differential(round part)you should see a bolt or (plug) towards the top left side facing fprward the vehical this is where you can add differential fluid you want to fill it just below the leval of the hole.....
Drive the vehicle for several dozen miles to warm the fluid up. Center a drain pan under the differential and remove the lowest of the two plugs. Allow the fluid to drain - remove the upper plug to allow it to drain freely. When the draining is complete, replace the lower plug and refill the differential with the proper fluid type until it just begins to run out of the upper hole. Replace the upper…
Unfortunately, those axles don't have a drain plug. So you're going to have to unbolt the differential cover and let it drain out that way. Note that you'll also have to clean off the old gasket and replace it when you reinstall the diff cover. To refill it, the plug is at the top of the differential carrier, on the right side.
On my 2002 Grand Cherokee the transmission dipstick is on the left side of the engine (facing the engine) near the firewall. The front differential has a 3/8 socket plug. The rear differential has a rubber plug that can be popped out with a screwdriver. The center differential has a 10mm Allen plug. For each differential the fluid should be just below the plug opening.
To change differential fluid on a 1997 CR-V the vehicle needs to be lifted up to reach the rear differential. Find the drain plug located on the underside of the unit. Pull the plug and drain the fluid, when done place the plug back add fluid into the fill hole which is located topside of the differential.