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Discussion Starter #1
I ran over a traffic cone on highway and broke the underbody plastic covers in the front. Couldn't find the parts on online dealers. Anybody knows the part #? I guess they are officially called air deflectors (just like the rim attached to the bumper).
 

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pictures might help
 

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Discussion Starter #5
Needs GM EPC installed on your computer to find them. They do not show up on online parts catalogs. #4 and #5 below:



 

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Bumping this thread from the past. Above photos are helpful but still don't include the part numbers.

Like the OP, I ran over a thing and damaged one of the covers and the cross-brace. The cross brace is easy to find, has a part number stamped into it, and costs a whopping $6.67. The felt cover is a mystery, there seem to be "air deflectors" available but no diagrams to ensure I'm ordering the correct part.
 

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Discussion Starter #7
Replying my own question, I removed two of them and part numbers are stamped inside.

Front passenger side : 23363171
Front: 84084598
 

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Actually marking parts with their respective part numbers seems almost TOO helpful to be real! That's awesome, though!
 

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Where does one obtain GM EPC (Electronic parts catalogue?) from??
 

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I ran over an "alligator" on the freeway (truck tire retread) and had to replace all of them. First I had to figure out they are called deflectors. I thought it was some kind of sound proofing. Here are all the part numbers and links to help someone else.

The metal piece going across the front that is bent on mine is engine cradle brace 22957057. I ordered from GM Parts bin. It fit perfect and shipped quickly. The old one was rubbing against the exhaust and causing noise like it had a hole in it. I was surprised this part was only about $7

The part on the drivers side on the brace is 23363169 Front Compartment Splash. About $50

Passenger side REAR deflector: 23363172

Passenger side FRONT deflector: 23363171

DEFLECTOR, UNDERBODY REAR AIR REAR Drivers side 23363173

84052477 Large Drivers Side DEFLECTOR, UNDERBODY FRONT AIR( VEHS BUILT W/O MOUNTING HOLE NEED TO ORDER 23505514 TOGETHER WITH 11570498 & 11611806) $70 at gm parts giant.

If you lose the nuts you can get them too.
13280110 NUT, Front End/Bumper Filler NUT,UNDERBODY REAR AIR OUTER DEFLECTOR(13.5 THICK, FOR WELD STUD T5X14,2)(12.980)

11547637 NUT, Radiator Air NUT,FRONT COMPARTMENT AIR DEFLECTOR(NUT-HEXFLNGE,T5,20 OUTSIDE DIAMETER,10 SOCKET, PLASTIC) (1.269)
 

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Snow & Ice Ripped Off My Undercarriage Underbody Deflector Panel

If anyone needs the part number for the full under body deflector panel: (that spans roughly from the driver's side front wheels to the back wheels)

Factory Part Number: 84052477
Description: Deflector 012630
List Price: $153.14 CDN
Labour: 0.30 hours

Just ensure that they clean the undercarriage before they install the new panel, don't want any of that salt/corrosive materials to linger around the high voltage wires that was visible.

IMG_20200305_093613.jpg

Cheers,

-Sparky II
 

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The two I replaced in our car were:

- 84084598 - Shield - under/behind radiator (be careful to avoid falling debris from the space in front of the radiator when removing the old one)

- 23363171 - Deflector - behind above, in front of passenger compartment.

Additionally, for some unknown reason, my car was missing two fender bolts, pn 11561674, holding the deflector in place.
 
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