Need help w/part# for front coil springs on my 2011 Yukon Denali

[Denaliz]

I’ve looked around and gm parts direct flat out told me the oem springs were discontinued? Rock auto doesn’t list my specific model so I’m concerned I’m ordering wrong ones I’m wanting to replace both front coil springs when I install my new oem struts and mounting parts. I have the z55 suspension. Any help is appreciated.

 

[915_Tahoe]

Last 8 of vin#

 

[swathdiver]

I’ve looked around and gm parts direct flat out told me the oem springs were discontinued? Rock auto doesn’t list my specific model so I’m concerned I’m ordering wrong ones I’m wanting to replace both front coil springs when I install my new oem struts and mounting parts. I have the z55 suspension. Any help is appreciated.

Give Rene the last 8 of your VIN and he can look it up easy peasy.

The ACDelco Professional variety (not GM OE) are either 45H0451 for AWD or 45H0452 for RWD. Your RPO sheet has 6XX and 7XX spring codes on it and we can use those to look up the exact GM OE springs as well. For example, if the codes are 6B4 and 7B4, the front coils are 20842469.

Much easier/accurate to have Rene look it up!

 

[Denaliz]

Thanks guys- this is the 1st part I’ve not been able to find via gmpartsdirect, rock auto, google etc since 2011

6ya,7ya suspension code. Last 8 of vin is BR178000

I believe them to be oem #20842477
And ADO-45H0453 replacement option from ACDelco/ Moog 81254

 

[Foggy]

I’ve looked around and gm parts direct flat out told me the oem springs were discontinued? Rock auto doesn’t list my specific model so I’m concerned I’m ordering wrong ones I’m wanting to replace both front coil springs when I install my new oem struts and mounting parts. I have the z55 suspension. Any help is appreciated.

Not that I know your answer, but I noticed you have the Magnaflow exhaust...
Do you happen to know which one?? and how do you like it.. I have headers etc, but
still the oem cat back. Was wondering real world opinion

 

[Denaliz]

The infamous 12909 muffler

 

[Denaliz]

Thanks guys- this is the 1st part I’ve not been able to find via gmpartsdirect, rock auto, google etc since 2011

6ya,7ya suspension code. Last 8 of vin is BR178000

I believe them to be oem #20842477
And ADO-45H0453 replacement option from ACDelco/ Moog 81254

Just my thoughts based on what I’m seeing but I’d love some validation still if you csn help confirm with the info I provided please

 

[swathdiver]

Thanks guys- this is the 1st part I’ve not been able to find via gmpartsdirect, rock auto, google etc since 2011

6ya,7ya suspension code. Last 8 of vin is BR178000

I believe them to be oem #20842477
And ADO-45H0453 replacement option from ACDelco/ Moog 81254

@915_Tahoe

 

[Denaliz]

All taken care of guys and appreciate the help. I ended up getting a set of moog front coil springs#81254 direct fit for my RWD z55 suspension.

looking forward to the final piece of my suspension rebuild.

 

[Joseph Garcia]

Those OEM Z55 coil springs are no longer manufactured by GM (Why? Who the heck knows!). I just went through this, and I had a dealer check the dealer inventory nationwide. There were 8 OEM coil springs in dealer inventories nationwide, and only 1 dealer actually had 2 in stock. The dealer price plus the added freight to get them to me, made them a non-starter. I purchased the Moog coil springs at Rock Auto, and so far, they work fine.