Body Mount Bushings

[nick0789]

I’ve been dealing with a random popping sound from the front end of my 2005 Tahoe (Z71) and everything is tight with the suspension. It’ll do it when getting out of a parking space as I turn the wheel, which made me thing tie rod or ball joint. Then I came across the two front body mount bushings.
The lower halves of the two front bushings are loose, as shown in the video above. The bolts are tight.

Body mounts are foreign to me, but I’d wager my paycheck that they are not supposed to be that loose. From what I found online, the torque for the bolts should be around 44 ft lbs (please confirm).

Does anyone have an OEM part number for the bushings? I couldn’t find it on the ACDelco website. RockAuto shows 15201791 but is labeled as radiator support and as a body mount. I also see 2924040

Which part number do I actually need for the front body mounts (just behind front wheel well)?

Or would I be better off converting to poly? If so, what part number is best?

Thanks!

 

[Joseph Garcia]

Please post the last 8 digits of your VIN, and @915_Tahoe may be able to provide you with the correct part numbers for your truck.

 

[George B]

Don’t go poly unless you are changing all of them.
Also, find a way to get some penetrating oil into the area where the captured nut is. Don’t use an impact for removal either. If you spin that nut or break that bolt you will have a very bad day.

 

[OR VietVet]

If you are talking about at the bottom of the radiator, when you say front, then the 15201791 would be right for upper and 15837581 for lower

Sorry, first two links pull up something totally different than what I copied. Let me try again.

15837581 - Radiator Support Cushion 2001-2014 GM | GM Parts Warehouse

Save Money On Your OEM Radiator Support Cushion - 15837581 - For Your 2001-2014 GM Vehicle When You Shop Online With GM Parts Warehouse!!!

www.gmpartswarehouse.com

2000-2020 GM Radiator Support Upper Insulator 15201791 | GmPW

2000-2020 GM part # 15201791 - Radiator Support Upper Insulator

www.gmpartswarehouse.com

--upper

 

[nick0789]

Thanks for the replies! And Im trying to stay away from poly if I can, though $200 for all bushings vs. $50 for one rubber one is tempting.

My VIN is as follows: 1GNEK13T65R148028

 

[OR VietVet]

Spending the extra money for the others will also mean way more labor. If you lean that way get some AeroKroil penetrating fluid, 3-4 cans, and spray away.

Amazon.com

 

[OR VietVet]

I’ve been dealing with a random popping sound from the front end of my 2005 Tahoe (Z71) and everything is tight with the suspension. It’ll do it when getting out of a parking space as I turn the wheel, which made me thing tie rod or ball joint. Then I came across the two front body mount bushings.
The lower halves of the two front bushings are loose, as shown in the video above. The bolts are tight.

Body mounts are foreign to me, but I’d wager my paycheck that they are not supposed to be that loose. From what I found online, the torque for the bolts should be around 44 ft lbs (please confirm).

Does anyone have an OEM part number for the bushings? I couldn’t find it on the ACDelco website. RockAuto shows 15201791 but is labeled as radiator support and as a body mount. I also see 2924040

Which part number do I actually need for the front body mounts (just behind front wheel well)?

Or would I be better off converting to poly? If so, what part number is best?

Thanks!

I see you have the "T" engine, meaning gas instead of flex fuel. I am sure you have seen over time that means some parts will be different for our rigs. Fuel pump for sure if you have ever done that or need to in the future. Gotta pay attention.

 

[blueinkd]

I’ve been dealing with a random popping sound from the front end of my 2005 Tahoe (Z71) and everything is tight with the suspension. It’ll do it when getting out of a parking space as I turn the wheel, which made me thing tie rod or ball joint. Then I came across the two front body mount bushings.
The lower halves of the two front bushings are loose, as shown in the video above. The bolts are tight.

Body mounts are foreign to me, but I’d wager my paycheck that they are not supposed to be that loose. From what I found online, the torque for the bolts should be around 44 ft lbs (please confirm).

Does anyone have an OEM part number for the bushings? I couldn’t find it on the ACDelco website. RockAuto shows 15201791 but is labeled as radiator support and as a body mount. I also see 2924040

Which part number do I actually need for the front body mounts (just behind front wheel well)?

Or would I be better off converting to poly? If so, what part number is best?

Thanks!

Interesting. I'm getting a popping from the front as well when making turns. All front end is new. Let me know how yours turns out. I may be replacing body mounts here. Rig has 255k miles

 

[blueinkd]

Thanks for the replies! And Im trying to stay away from poly if I can, though $200 for all bushings vs. $50 for one rubber one is tempting.

My VIN is as follows: 1GNEK13T65R148028

What's wrong with poly for the body mounts??

 

[OR VietVet]

Noisy is what I have seen in threads.

 

[blueinkd]

Noisy is what I have seen in threads.

I'm checking mine tomorrow and ordering the energy suspension kit if hacked. My energy suspension sway bar bushings made a heck of a difference and they have yet to sqeak.

 

[nick0789]

What's wrong with poly for the body mounts??

In my previous experiences with poly bushings, they wore out so much faster than traditional rubber bushings. Granted they didn’t crack or split, but the holes “ovaled out” fairly quickly.

They were control arm bushings a Jeep XJ, and while they didn’t squeak they definitely didn’t last long. Take it with a grain (or several) of salt, though: I used Kendall Super Blue or Mobil XHP 222 grease. In my research, traditional petroleum based greases aren’t the best for poly bushings.

 

[915_Tahoe]

Thanks for the replies! And Im trying to stay away from poly if I can, though $200 for all bushings vs. $50 for one rubber one is tempting.

My VIN is as follows: 1GNEK13T65R148028

Upper cushion (white)
Gm#15201140 Discontinued
- Depending which color you have
Upper cushion (yellow)
Gm#15201141
$66.67 each

Lower cushion (71 MM OD)
Gm#15201791
$54.70 each

 

[nick0789]

Upper cushion (white)
Gm#15201140 Discontinued
- Depending which color you have
Upper cushion (yellow)
Gm#15201141
$66.67 each

Lower cushion (71 MM OD)
Gm#15201791
$54.70 each

Thanks for the part numbers. My upper cushions are black from what I saw: is there a new PN for the white upper cushion that supersedes 15201140?

 

[nick0789]

Well, just finished with the replacement. I just said screw it and went with the Energy Suspension kit (black) and a good coating of Super Lube on all components. Most bushings were still pretty good for 16 years old with 185k miles, outside of the two just behind the front wheels on either side. The lower halves were toast and flexed way more than the rest and even crumbled a little bit.


My Tahoe has been in the south its whole life (East NC), so rusted bolts were not a concern. It took minimal effort with a 2’ breaker bar to break everything free. That said, a word to the wise for anyone doing this: it took me about 4 hours of casually going through the process (could easily cut it to 1.5-2 hours if I did it again), with an hour easily going towards removing the bolt from the bumper radiator support bushing on the passenger side. The bolts in the front have fat washers and I couldn’t get it around the AC line that runs right above it. Finally got a work-around where I pried up on that tubing (VERY carefully) just enough to wiggle the bolt at an angle to get it out.
Save yourself the hassle and go that route if you want, but be aware that you are adding stress to a sensitive component.

Torqued everything to 50 ft-lbs with blue thread locker once all bushings were in place. All clearances around body panels / door jambs are consistent as well after the repair.

As far as road manners go, I only did a brief test drive. I’ll have a more thorough update tomorrow with my work commute but I definitely feel the road more. It’s not significant enough to upset me: I’d consider it similar
to that rumble/vibration feeling you get when driving a golf cart on asphalt. Just enough of a hum but nothing annoying. Granted, these vehicles are not Town Cars and I do have the stiffer Z71 shocks so YMMV.

I will say that the road feel is something I’ll easily forget about, but damn can I feel this transmission shift haha

 

[nick0789]

After driving around for a few days I will say that you feel the road more with the poly bushings. It’s more of a hum/buzz in the seat and I feel railroad tracks more when I go over them.
Still, I’m happy with the repair. I am still dealing with the popping sound (go figure) so I’ll be starting a new thread for that.