2000 GMC Sierra SLE Ext Cab Z71 from North America - Comments

I have a 2001 GM 4X4 extra-cab and it has 39K miles. I hear a squeak when I come to a stop or start going from a stop. I also notice I have some play when I switch from Parking to drive.. the drive shaft turns 2-3 inches without the truck moving. What can it be??

I have a 99' GMC Sierra 4x4 and love it. Really the only problem I have with it and have been told be the dealer that there is nothing wrong. It is that when I drop it into drive or am stopped and accelerate there is a clunk from the rear end. Is my rear end getting ready to go out on me? I am going to change the fluid this weekend. But I don't think this will fix the problem. Someone told me a while ago that these trucks had a problem with the rear spring shackles having too much play in them. I just bought a 7800lb fifth wheel and really don't want to run my baby into the ground pulling it.

I am shocked to here about the trouble people have with these trucks and still are ready to slam other brands. I would expect at least 60000 miles of trouble free driving from a new vehicle, anything less would be an frustrate the heck out of me.

Clunking is a very annoying problem. I looked into it a while back (friend had same problem on his '02 Z71 - he now owns a Ford). As for my '00 Z71, I grin and bear it. The culprit is a flange? (can't remember for sure) in the drive shaft. The play is intentional, from what I've heard. If it drives you batty, your dealership should offer a zinc-plated alternative for about $400.00 that is supposed to quiet the superior engineering.

I had to look into the clunk in the rear end of my '97 GM, I was told it was the slip yoke and that the repairs would be very expensive. My brother in-law changed his himself, not fun.

I have a 97 GMC Z71 I have already placed 2 rear ends in it and I'm going to put a 3rd in there tomorrow... any idea why the rear end keeps going out?

I have a 2000 GMC Sierra that has 57000 miles the only problems I have are the rough idling, I have changed out the spark plugs and spark plug wires and it still idles rough. Other than that the truck has been doing good and as long as you do the regular services to it, it will keep running just fine because I haven't had a problem with it since I bought right out the dealer with 3 miles on it. Does anyone know what I can do to get rid of the rough idle?

My 1997 GM idled rough only slightly until I had to put in my third fuel pump. This time though, I went with a GM certified part and the rough idle seems to have stopped.

I have a 2000 GMC Z71 obviously with the 5.3L in it. In regards to the engine/valve clatter, I am hearing that the intake manifold gasket is the culprit which may relate to anyone having issues with low coolant (no visible leaks) and the rough idle. I told my mechanic who was trying to help me troubleshoot this issue, that I had heard from a couple other people who had the same problem. Apparently this is common because he has had numerous customers come in with coolant lose and no explanation of where it is going. Since I am no mechanic and can't quote his exact words, his thinking is that once the engine is shut down, the oil seeps down into the lifters and sits there. Once the motor is fired up, that is why it clatters since the oil is pumping back into the lifters. Since it is such a small amount of antifreeze, that is why the 'check coolant' light only comes on about 2x a year. My question as to if it is contaminating the oil was answered that it most likely burns off after driving and isn't a threat to shortening the life of the motor. Since I am selling my truck and wanting to get it fixed before I do, I will keep you posted as to if the problem was solved. Any donations would be accepted to be the guinea pig. lol.

I have 2000 gmc truck with a 4.8 with 145000 km and bought the truck with 100.000 kms. I have owned gmc and chev trucks all my life. My first truck was a 1963 then a76 a72 a79 a90 and my worst truck the 2000.I have had good luck with my trucks and always stuck up for the gm products. another words I am a true blue chevy guy. But this pston slap carbon knock or whatever it is has got me upset. No truck should make that noise it is embarising and from what I hear there is a lot of trucks out ther with this problem. My manual window crank also broke and when I checked it out it was a broken cable, not an easy fix. Also I don"t know how many of you have heard the ford power sterring noise, but they just about all have it cars and trucks, well guess what, theres a bit of that noise in my 2000.I am looking for a new truck and do not like to sell my truck with this piston slap. so thanks a lot GM. Mabey I will trade it back to a gm dealer. I am looking for a diesel and will either buy a gm or a dodge.I will not buy a ford because the powerstroke is crap and exspensive for parts.

I have a GMC Sierra 2000 z71, but I don't know what model it is.

Is it a 1500 or a 2500?

How do I find out, so I can get the right part?

I have a 2000 Z-71 and clunking is my problem!

This happens after about 15 minutes of driving. As if it only does it when the transmission is warm.

From a stop, when I accelerate and it shifts into 2nd. I feel a drop and hear a clunk.

Does anyone know what the problem is?

Any help is greatly appreciated.

For the drop and clunk guy, check your trans mount and keep an eye on your U joints.

Everyone do some research before you comment theclattering in the engine is the famous piston slap coolant does not go through the intake on a 4.8 or 5.3.