[SE Off Road1]

I have 1100 miles on the truck. It is a 05 SE Off Road with the Auto option on the transfer case. Here is what I am experiencing. I will bring the truck up to speed, say 35-40 and totally lay off the gas for a second and then quickly accelerate again. The truck will make a clunk (feels like it may be in the rear-end) as it applies power to the driveline. This can be somewhat normal for a car or truck with miles on it but being this new I would hope it would be tighter. Those who had new differentials installed, what is the symptom you experienced.

Thanks

 

[armagdn]

clunk

i have the same problem with my 05 armada, and i took it to the dealer at 700 miles, and they told me there snothing wrong with it, and its normal
should i bring it back to get looked at again?

 

[andy]

I got the exact same thing. If I coast then step on gas, it feels like a U joint is loose or something....

 

[masterwong]

Mine doesn't do it. I had a car a few years back that did it at 65,000 miles and low and behold a couple thousand miles later my tranny went out.

 

[crazy4trains]

I have 1100 miles on the truck. It is a 05 SE Off Road with the Auto option on the transfer case. Here is what I am experiencing. I will bring the truck up to speed, say 35-40 and totally lay off the gas for a second and then quickly accelerate again. The truck will make a clunk (feels like it may be in the rear-end) as it applies power to the driveline. This can be somewhat normal for a car or truck with miles on it but being this new I would hope it would be tighter. Those who had new differentials installed, what is the symptom you experienced.

Thanks

I have the same issue that the original post mentions and am looking to determine if this is really normal operation or an issue. 2011 Armada Platinum with 87,000 miles.

 

[staplebox]

I have the same issue that the original post mentions and am looking to determine if this is really normal operation or an issue. 2011 Armada Platinum with 87,000 miles.

Not normal to clunk imo.
Where do you feel it? In your feet? In your seat? Steering wheel? Front, back? Any speed or rmp? Can you make it happen when you want?

If the gas pedal causes a clunk I'd focus on the drive shafts and suspension closest to the clunk. Could be a u-joint, maybe rear diff bushings, bad/loose body mounts, bad shock, broken spring, really bad ball joint etc.

 

[crazy4trains]

Just as the OP says,

"I will bring the truck up to speed, say 35-40 and totally lay off the gas for a second and then quickly accelerate again. The truck will make a clunk (feels like it may be in the rear-end) as it applies power to the driveline."

I've seen multiple posts on this issue but none that really close the loop and define the cause. I'm thinking universal joint, rear diff, transmission mount, transmission and/or transfer case. Seems to be easier to make it happen after the vehicle warms up.

Got under the beast today to check driveline components. Everything feels tight. Any additional insight would be appreciated.

I crawled under the beast and checked the driveline. As far as checking by hand everything feels tight. BTW, the driveshaft on this beast is huge.

Any other thoughts would be appreciated.

 

[staplebox]

I think the front drive shaft may weight more than the rear.

If it isn't drive shaft ujoints, diff mount, tranny mount, or body mounts (or engine mount I suppose) then I would move on to the suspension. Don't forget the CV axles too - check for ripped boots - once crud get in there it is like sand in your underwear - just rubs everything till it doesn't work.

If I think through the problem, it only happens under firm acceleration - when you let off the gas the trucks weight shifts forward and when you "quickly accelerate" you are shifting the weight backwards - that involves the suspension. Could be a loose / bad shock or bolt, ball joint, spring, wheel bearing etc.

These are all just guesses but how I would approach it - hard to figure out random clunks over the internet.

 

[crazy4trains]

Thanks for the feedback. If I ever figure out the problem I'll follow up.

Any other thoughts are welcome.