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compressor for 2000 Cadillac

mhamilton on Sun May 02, 2010 4:22 PM User is offlineView users profile

Year: 2000
Make: Cadillac
Model: Eldorado
Engine Size: 4.6L
Refrigerant Type: R134a

Found out today that my compressor is leaking all around its case... the system had UV dye in it, but don't need a light to see green oil all over this!

Was just looking at the replacement compressors, what's the difference between the $223 and $377 units? I also found a Delphi for $295 and a Delco for $396. Is there a better unit to go with? Did the case seals improve on the new ones?

Also, can this compressor be replaced on the Northstar without dropping the cradle? Looks like there's access through the wheel well, and possibly the top if I pull out the radiator. Any tips on how to R&R this model?

Thanks in advance,

TRB on Sun May 02, 2010 4:32 PM User is offlineView users profile

I prefer the Valeo aftermarket over the OEM if the Valeo is not available we also have a good import available. To be honest I see little difference these days in failure rate between aftermarket units and the "OEM" units. It's hard to call the Harrison and Delco units factory anymore as they all seem to be build by outside sources anymore.


When considering your next auto A/C purchase, please consider the site that supports you:

Edited: Sun May 02, 2010 at 6:49 PM by TRB

GM Tech on Sun May 02, 2010 6:44 PM User is offline

Compressor comes out the wheel well- no need to mess with cradle. Just remove oil filter and oil pressure sending unit ( I always remove the sending unit, because I broke one once in that tight area) - Unbolt all mounting bolts, then move compressor an inch forward- to unbolt manifold block- can be a real PITA- but just take your tiime- the manifold block bolt is the toughest part- unbolt rear coompressor bracket from block-leave it attached to compressor unitl you get compressor out- then swap it over to new compressor.

The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......

mhamilton on Sun May 02, 2010 7:20 PM User is offlineView users profile

Thank you both!

That doesn't sound half bad (nothing on this engine is easy, but that doesn't sound as bad as the LT1 compressor R&R). I need a new oil pressure switch anyway, so that'll be 2 birds with one stone (this one is starting to seep).

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