the rear end in my dakota is making a howling noise.how do i fix this? quick

it sounds like you might have a bearing going I would clean the filings out and refill with oil then see if the noise is any louder if not I would drive it the 1000 km and then have it looked at

I agree with gg, might want to check on exactly what type lube goes back in it. Some take a special lube!

if its a bearing noise you may have to get it replaced at a qualified repair shop

replace pinion bearing and have diff inspected. I got a rear diff assembly from the junkyard and replaced. Cheaper than having rebuilt