Radiator crapped out.

[partcheck]

Ugh. Everything seems to be breaking lately. Noticed antifreeze leaking and then the "service airbag" message pops up.

Radiator finally gave out.

Upper right side of the radiator I noticed these cracks.

Would anyone happen to know what size radiator I need for an '05 Z71? I tried measuring it without taking everything apart and I think it's 34" wide x 1-1/4 thick. Not sure of the height. The last 8 of my VIN is: 5R208540

 

[swathdiver]

Ugh. Everything seems to be breaking lately. Noticed antifreeze leaking and then the "service airbag" message pops up.

Radiator finally gave out.

Upper right side of the radiator I noticed these cracks.

Would anyone happen to know what size radiator I need for an '05 Z71? I tried measuring it without taking everything apart and I think it's 34" wide x 1-1/4 thick. Not sure of the height. The last 8 of my VIN is: 5R208540

Plug your VIN in here and have a look: https://parts-catalog.acdelco.com/catalog/catalog_search.php

I come up with 21647 or 21650 but do not know your RPOs. You're about spot on with the dimensions, 34 x 18-1/2 x 1-1/16!

 

[partcheck]

Thanks for the response!

Here's my build sheet. I have no idea how to translate RPO codes into figuring out what size radiator I need. How do you do that?

Build Sheet

 

[Doubeleive]

Ugh. Everything seems to be breaking lately. Noticed antifreeze leaking and then the "service airbag" message pops up.

Radiator finally gave out.

Upper right side of the radiator I noticed these cracks.

Would anyone happen to know what size radiator I need for an '05 Z71? I tried measuring it without taking everything apart and I think it's 34" wide x 1-1/4 thick. Not sure of the height. The last 8 of my VIN is: 5R208540

the 34" radiators are all basically the same with 1 key difference, either they come with a oil cooler option or no oil cooler, even if you do not have the oil cooler you can still use one with the option. generally they all have a transmission cooler option.
the cheap re-pops are usually only 1" thick, best to try to for at least a little thicker some come 1 1/8"
other than that they all fit and work

 

[OR VietVet]

I have a 2005 Z71 and mine is the Genuine GM part #21647. RPO codes do make the difference to get the correct one. Simple to check them. If you actually need the 21650, as per RPO codes, likely still time to cancel the other one.

 

[partcheck]

Thanks, all.

Ordered the 21647 from RA.

Now to watch videos to learn how to install the damn thing lol. This truck is the first vehicle I've ever worked on.

 

[OR VietVet]

Actually is pretty simple but the hardest part is the refill and burping air. Lots of threads and videos about that process.

 

[Tonyrodz]

Ugh. Everything seems to be breaking lately. Noticed antifreeze leaking and then the "service airbag" message pops up.

Radiator finally gave out.

Upper right side of the radiator I noticed these cracks.

Would anyone happen to know what size radiator I need for an '05 Z71? I tried measuring it without taking everything apart and I think it's 34" wide x 1-1/4 thick. Not sure of the height. The last 8 of my VIN is: 5R208540

I bet the airbag sensor on the driver side, underneath crapped out. Super common on these. I had the same issue. Replaced mine with a used one--gtg.

 

[partcheck]

I have a 2005 Z71 and mine is the Genuine GM part #21647. RPO codes do make the difference to get the correct one. Simple to check them. If you actually need the 21650, as per RPO codes, likely still time to cancel the other one.

I posted my build sheet a few posts up. How do I read those RPO codes? I don't see anything in there that indicates radiator sizing.

 

[partcheck]

I bet the abs sensor on the ds, underneath crapped out. Super common on these. I had the same issue. Replaced mine with a used one--gtg.

ABS - airbag sensor?

Not sure what DS is.

Do you mean something like this? https://www.ebay.com/itm/383876821422?hash=item5960d771ae:g:-BsAAOSwp19f51w0

 

[Fless]

Get an advanced code reader and read the code for the airbag light (reader needs to do body codes). It will help you pinpoint the issue instead of throwing parts at it. Post up the code when you get it.

 

[Tonyrodz]

ABS - airbag sensor?

Not sure what DS is.

Do you mean something like this? https://www.ebay.com/itm/383876821422?hash=item5960d771ae:g:-BsAAOSwp19f51w0

I bet the airbag sensor on the driver side, underneath crapped out. Super common on these. I had the same issue. Replaced mine with a used one--gtg.

I fixed my post. I don't know why it posted as abs. Should've said srs. Ds is the driver's side.
This sensor--

2003-04 Front Impact Sensor GMC Chevrolet Tahoe Suburban, Tahoe 15057506 | eBay

WHAT IT FITS: 2003-2004GMC Sierra, 2003-2004Chevrolet Silverado, 2003-2004Chevrolet Suburban, 2003-2004Chevrolet Tahoe, 2003-2004GMC Yukon, 2003-2004 Cadillac Escalade, 2003-2004 Chevrolet Avalanche.

www.ebay.com

 

[OR VietVet]

I posted my build sheet a few posts up. How do I read those RPO codes? I don't see anything in there that indicates radiator sizing.

If you look inside the glove box cover, the RPO codes are listed there. Much easier for us to read if a pic of that is posted here. Only care about the codes and not the description when looking for correct application. If you notice, at RA, the two choices we have given are the same size. I had to look thru all the RPO codes, listed at RA, for each radiator part number to make sure I ordered the right one. PITA sometimes but is important. If you will post a pic of those codes in the glove box, I will help look it up, if you wish.

 

[partcheck]

I fixed my post. I don't know why it posted as abs. Should've said srs. Ds is the driver's side.
This sensor--View attachment 345958

2003-04 Front Impact Sensor GMC Chevrolet Tahoe Suburban, Tahoe 15057506 | eBay

WHAT IT FITS: 2003-2004GMC Sierra, 2003-2004Chevrolet Silverado, 2003-2004Chevrolet Suburban, 2003-2004Chevrolet Tahoe, 2003-2004GMC Yukon, 2003-2004 Cadillac Escalade, 2003-2004 Chevrolet Avalanche.

www.ebay.com

Is there any difference between that one and this one?

2005-06 Front Impact Air Bag Sensor GMC Chevrolet Tahoe Escalade Yukon 15103522 | eBay

<p>2005-06 Front Impact Air Bag Sensor GMC Chevrolet Tahoe Suburban Yukon 15103522. Condition is Used. Shipped with USPS First Class Package.</p><br><br><br><p>WHAT IT FITS: 2005-2006 GMC Sierra, 2005-2006 Chevrolet Silverado, 2005-2006 Chevrolet Avalanche, 2005-2006 Chevrolet Suburban...

www.ebay.com

The one you listed is part # 15057506. The one RA lists for my truck is 15103522

Could there possibly be a difference between those two? It looks like such a simple part.

 

[partcheck]

If you look inside the glove box cover, the RPO codes are listed there. Much easier for us to read if a pic of that is posted here. Only care about the codes and not the description when looking for correct application. If you notice, at RA, the two choices we have given are the same size. I had to look thru all the RPO codes, listed at RA, for each radiator part number to make sure I ordered the right one. PITA sometimes but is important. If you will post a pic of those codes in the glove box, I will help look it up, if you wish.

I would love it if you would teach me how to make heads or tails over the RPO codes!

 

[TollKeeper]

I would love it if you would teach me how to make heads or tails over the RPO codes!

Thats pretty easy actually..

Send an email to [email protected]

Include your VIN # and ask for your build sheet.

In a day or 2, they will respond with your RPO sheet, with a brief description of each.

Or you could use http://www.free-vin-decoder.com/ (its free)
Punch in your VIN on the top right, and click on Decode VIN.

They aren't as accurate thou as the GM one. But it will get you started.

 

[OR VietVet]

Thats pretty easy actually..

Send an email to [email protected]

Include your VIN # and ask for your build sheet.

In a day or 2, they will respond with your RPO sheet, with a brief description of each.

Or you could use http://www.free-vin-decoder.com/ (its free)
Punch in your VIN on the top right, and click on Decode VIN.

They aren't as accurate thou as the GM one. But it will get you started.

He already listed his build sheet, that he got from some site, in post #3. I just don't want to scroll thru all of those descriptions. The pic he just posted is more up my alley.

 

[TollKeeper]

Also.. Why are people so worried about posting a VIN # online?

 

[TollKeeper]

He already listed his build sheet, that he got from some site, in post #3. I just don't want to scroll thru all of those descriptions. The pic he just posted is more up my alley.

Doh! Missed that!

 

[Tonyrodz]

Is there any difference between that one and this one?

2005-06 Front Impact Air Bag Sensor GMC Chevrolet Tahoe Escalade Yukon 15103522 | eBay

<p>2005-06 Front Impact Air Bag Sensor GMC Chevrolet Tahoe Suburban Yukon 15103522. Condition is Used. Shipped with USPS First Class Package.</p><br><br><br><p>WHAT IT FITS: 2005-2006 GMC Sierra, 2005-2006 Chevrolet Silverado, 2005-2006 Chevrolet Avalanche, 2005-2006 Chevrolet Suburban...

www.ebay.com

The one you listed is part # 15057506. The one RA lists for my truck is 15103522

Could there possibly be a difference between those two? It looks like such a simple part.

Not really sure, but you can google the part number to see if it'll work for you, or stick your head under the frontend and peep it out. Either way will work.
EDIT--My hoe is an 03, yours may differ.