What is GM driveline clunk?

The clunk is take-up of driveline slack in the differential and transmission output shaft.

How much play should a slip yoke have?

For safe and stable operation, the slip yoke and spline should maintain at least 2 inches of engagement at all times.

Why does my truck clunk when I accelerate?

If you hear a clunk when going over a speed bump or hitting a pothole — and if that clunk is accompanied by a more metallic sound — that usually points to a suspension issue, which could mean a bushing, control arm, strut, strut bushing, or shock absorber needs to be replaced.

Why does my transmission clunk when I put it in reverse?

A popping / clunking noise when moving in reverse can be caused by many things. Two of the most common causes for those symptoms are worn axles or motor mounts. The axles are the joints that transmit power from the transmission to the wheels.

Are you supposed to grease a slip yoke?

The lubricant used for u-joints is satisfactory for slip yoke splines. Apply grease gun pressure to the lube fitting until lubricant appears at the pressure relief hole in the plug at the slip yoke end of the spline.

Should you grease slip yoke?

If you have a 1-piece driveshaft, it connects rear-end directly to the transfer case (on 4wd vehicles) and the slip yoke gets it’s splines lubricated by the transfer case fluid (ATF). I wouldn’t put grease in this type since it’s going to mix with the transfer case fluid. May not do anything bad but who knows.

How much should drive shaft stick out?

3/4″ is recommended by most driveshaft builders, car sitting in its ride height.

How much play do you need in a drive shaft?

3/4″ of rotational play, or slack measured at the outside edge of the u-joint flange? I would say that is fairly normal, but if you are having noise from the rear end, I would be pulling the cover off and have a look inside. Remember, it could be coming from a worn wheel bearing too.

Why does my front end clunk?

A front end clunking noise going over bumps is most often caused by damaged control arms or suspension struts. Often, this kind of damage happens if you use your vehicle for off-roading adventures—or there are a lot of potholes on your daily commute.

Why is the slip yoke on my drive shaft not working?

This condition may be caused by the slip yoke not sliding smoothly on the output shaft splines. Lubricate the slip yoke with a PTFE lubricant or a lubricant specified by the manufacturer of the vehicle or replacement driveshaft.

Is it normal for a Chevy Silverado to clunk when accelerating?

You’re driving your Chevy Silverado peacefully down the highway when suddenly a loud clunking noise shakes you out of your reverie as you accelerate. That’s definitely not normal. It can be quite concerning to hear a clunking noise, but you don’t have to be too worried about it.

How to fix a clunk in the drivetrain?

to fix the clunk in the drivetrain from a dead stop (chirp, clunk, bump…etc…) pull the driveshaft and stuff a raquetball in the yoke and reinstall driveshaft….. it fixed my bro inlaws on his 01…..been that way for 30000miles…..

Why does my front end clunk when I stop?

Some vehicles with rear-wheel drive and may exhibit a driveline clunk or bump that occurs as the vehicle starts to move forward following a stop. This condition may be caused by the slip yoke not sliding smoothly on the output shaft splines.