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#4507662 - 09/04/17 09:47 PM Resonator replacement $?
TmanP Offline

Registered: 10/30/15
Posts: 427
Loc: MN
So, 12 years of salt has taken its toll on the resonator in my Lacrosse. It's leaking enough that you can feel it when placing your hand above it, and you can hear a "droning"/vibrating noise in the exhaust. It's particularly noticeable on cold starts. So, so I don't go to a shop with no knowledge (there isn't too much info on resonator replacement online, it's mostly about mufflers) what would you expect? The part is $50 and it looks easy to get to (just the welding)- is about an hour of labor fair? About $100-150? It's similar to/the same as the exhaust system used on Grand Prix and Impalas.
2006 Buick Lacrosse 3.8 V6 150,000 mi
2015 Chevy Silverado LT Z71 5.3 V8 30,000 mi
2010 Toyota Sienna 3.5 V6 150,000 mi

#4507715 - 09/04/17 11:01 PM Re: Resonator replacement $? [Re: TmanP]
user52165 Online   content

Registered: 10/21/11
Posts: 1296
Loc: CA
Walker makes SS ones. Resonators are not vehicle specific, being flow through designs. Get one that fits.

No doubt your original was SS. Makes me wonder about everything else in your undercarriage.

Edited by user52165 (09/04/17 11:04 PM)

#4507767 - 09/05/17 05:19 AM Re: Resonator replacement $? [Re: TmanP]
Silverado12 Offline

Registered: 02/26/13
Posts: 2958
Loc: Central Virginia
You could buy the resonator, sawzall off the old one and clamp on the new one too.
12 Chevy Silverado ext. cab LS, 2WD 4.3 auto
16 Challenger R/T Shaker 5.7 manual B5 blue
07 Harley Dyna Street Bob 96 c.i. 6 sp.
00 Mustang GT auto

#4507768 - 09/05/17 05:20 AM Re: Resonator replacement $? [Re: TmanP]
Trav Offline

Registered: 11/20/06
Posts: 17798
Loc: MA,
Thats a bolt on resonator, it has a flange that bolts to the cat. I wouldn't mess around cutting it out and welding just put a cat back system in.
ASE L1, Master. Deutsch Meisterbrief.

#4507782 - 09/05/17 06:19 AM Re: Resonator replacement $? [Re: TmanP]
BigD1 Offline

Registered: 08/12/15
Posts: 2572
Loc: NC
Local muffler shop around here would charge $30 labor if it's a bolt on plus the price of new bolts/nuts.
1992 Toyota Pickup--Havoline HM 10W-30--Motorcraft FL-910S

#4507793 - 09/05/17 06:39 AM Re: Resonator replacement $? [Re: Trav]
mk378 Offline

Registered: 09/27/15
Posts: 1263
Loc: USA
Originally Posted By: Trav
I wouldn't mess around cutting it out and welding just put a cat back system in.

+1. When you get a hole one place, the rest of the pipes won't be far behind.

Edited by mk378 (09/05/17 06:39 AM)

#4507866 - 09/05/17 08:38 AM Re: Resonator replacement $? [Re: TmanP]
WyrTwister Offline

Registered: 01/13/13
Posts: 1141
Loc: Texas
If you are not going to DIY the project , Get a price from several shops .

BTW , we recently purchased a 2006 Lacrosse CX 3.8l with 37,000+ miles . Love it ! :-)

Best wishes ,
God bless

P S I HATE doing exhaust work !
God bless

#4507879 - 09/05/17 08:52 AM Re: Resonator replacement $? [Re: TmanP]
UG_Passat Offline

Registered: 05/27/08
Posts: 1851
Loc: NJ
resonators are just another name for mufflers. They are called resonators because they located before the rear muffler.

Walker mufflers are not straight throw designs (unless you get a glasspack), they are tube-chambered mufflers, that flows quiet well, very similar to their performance aftermarket dynomax super turbo mufflers

#4507913 - 09/05/17 09:19 AM Re: Resonator replacement $? [Re: BigD1]
Linctex Offline

Registered: 12/31/16
Posts: 5198
Loc: Waco, TX
Originally Posted By: BigD1
Local muffler shop around here would charge $30 labor if it's a bolt on plus the price of new bolts/nuts.

I'd definitely hit up the local independent exhaust shop. The one with the best reputation around here charges a very small fee (relatively) for installing stuff if the customer supplies all the materials needed.

I'd be concerned about the remaining life of the pipe ahead of the resonator. If the resonator expired, I'll bet there's only another 1-2 years max left in the rest of the exhaust system.
"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

#4507941 - 09/05/17 09:53 AM Re: Resonator replacement $? [Re: TmanP]
WyrTwister Offline

Registered: 01/13/13
Posts: 1141
Loc: Texas
Very true . How many miles on the car ?

If this part is rust damaged , I recommend a very through corrosion inspection of the complete under side of the car .

Thankfully , I do not live in the rust / salt belt . It has been a long time since I have had to replace an exhaust component on one of our cars .

Best wishes , :-)
God bless

#4507985 - 09/05/17 10:52 AM Re: Resonator replacement $? [Re: TmanP]
HangFire Offline

Registered: 08/21/13
Posts: 2505
Loc: Central Maryland
It's a fair question to ask about rust on the rest of the car. But don't assume the worst. Exhaust systems handle much more water inside, plus condensation from heat/cool cycles, so they tend to rust out faster than everything else. They also don't get rustproofing or paint, because it would just cook off.
Various musings:

#4508077 - 09/05/17 12:46 PM Re: Resonator replacement $? [Re: TmanP]
Huie83 Offline

Registered: 02/19/09
Posts: 469
Loc: Minnesota
I just did mine on our 2010 impala. I would not do it again unless I had a lift and a torch. I had to cut the front bolts off because of rust, there is almost zero room as that's where GM put the front hanger location for that section of pipe. Had to get creative with a small diameter cutoff wheel, that's all that will fit to cut the top bolt off. Took me a good 3 hours. I ended up just replacing the muffler too, so cat back with the Walker stainless steel (muffler was stainless, pipe didn't seem to be) kit. I think the shop wanted $275 to do just the resonator.

The Walker kit was really nice for the money. I think it was $160 for the resonator/mid pipe, Stainless muffler and all the rubber hangers, clamps and gaskets etc. It's a little louder than stock but sounds good.

Edited by Huie83 (09/05/17 12:54 PM)