Question about 1997 Chevrolet Suburban

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Im installing a new a/c compressor and i need to add oil and i need to know how much. Its a 1997 suburban with the rear evaporater.

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11 OZ of PAG 150 oil Follow Compressor instructions to see how much to add to New Compressor and the balance should be poured into the NEW Accumulator and change the orifice tube in the front near Y split after the condensor on the high pressure side.

Posted on Sep 09, 2010


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How much freon does a 2002 Chevy Tahoe take with a 4.8 v8.The system has already been evacuated and is ready to be recharged.

Should have a sticker on the radiator core support that shows how much it takes . But if your's is missing here

Refrigerant System Capacities
PAG Oil GM P/N 12378526 for United States
PAG Oil GM P/N 88900060 for Canada
Accumulator Replacement
- oz*
* Add 60 ml (2 oz.) of PAG oil, plus the equal amount of oil drained from the accumulator.
Compressor Replacement
60 ml
2 oz
Condenser Replacement
30 ml
1 oz
The Delphi replacement compressor is precharged without PAG oil.
The Denso replacement compressor is precharged with 237 ml (8.0 oz) of PAG oil.
Evaporator Replacement
90 ml
3 oz
Evaporator, Rear Replacement
90 ml
3 oz
If more than the specified amount of PAG oil was drained from a component, add the equal amount of oil drained.
Total System PAG Oil Capacity
240 ml
8 oz
Total System PAG Oil Capacity with Rear A/C
330 ml
11 oz
Refrigerant Charge
0.8 kg
1.8 lb
Refrigerant Charge Utility with Front and Rear A/C
1.2 kg
2.7 lb
Refrigerant Charge Suburban with Front and Rear A/C
1.4 kg
3.0 lb

Mar 15, 2017 | 2002 Chevrolet Tahoe

1 Answer

1997 Chevrolet Suburban LT. Front air is not cool however rear air is cool? Mechanic says that needs a new a/c compressor

If you have a/c in the rear then your compressor is good..If it was bad you would not have a/c in the front or the rear..I would check see if the blend door is moving from hot to cool in the front..

Sep 16, 2011 | 1997 Chevrolet Suburban

1 Answer

Replacing a/c compressor and accumulater on 97 chev compressor says add 180cc pag i need to add oil to accumulater?

Usually an ounce is more than enough to add to the accumulator. Same thing if you where to replace the condensor or evaporator.

If you wanted you could dump the oil from the old accumulator into a cup and then add that same amount to the new one but an ounce would be the norm.

I’m happy to assist further over the phone at

May 03, 2011 | 1997 Chevrolet Lumina

1 Answer

A/c clutch seized

Sounds like you may have debris in your a/c system. From what you describe your going to need another compressor but before you hook the lines to it do a couple of things. Remove the reciever drier. remove the expansion valve. With the all the componants removed flush the lines and system. Flush kits are available at most parts stores. Install new expansion valve , new reciever drier, hook up new compressor. (make sure you add pag oil to the system, Check how much the system holds and add accordingly) Evacuate and recharge and you should be good!

Mar 14, 2010 | 1997 Ford Explorer AWD

1 Answer

Need to replace A/C compressor and hoses on 1999 GMC suburban C1500 5.8L V8 w/rear A/C. How do I do it and how much oil do I put in the new compressor?

Oiling in ac system is complicated.

why is the compresser being changed.

What I normally do is remove the receiver / dryer (which MUST reread > MUST be replaced when the system is opened) cut it open, check for chemical issues with litmus strip.

Typically, there is about one ounce in the reciever/dryer. If it is down to 1/2 ounce, for example, THE WHOLE system is down 50%.

The easiest way to get it right is to remove the expansion valve and flush the system, then all all new oil.

Really, this process shoudl be handled by a shop, with the right equipment to evacuate the moisture from the system.

If you are trying to save money, mount the new compressor and do not install the the reciever /dryer until immediately before the system gets evacated.

Sep 01, 2009 | 1999 GMC Suburban

1 Answer

I have a 1997 gms suburban that is blowing warm air out of both the front & rear air conditioning units.....I have a high side and low side line and was wondering which line I would choose to refill...

always the lowside, never the high side, you will blow up any bottle for refilling, not to mention it is difficult to do...the low side is the suction side from the compressor...if you suspect you have a leak find it the easy way, install a refrigerant with leak detector in it, it has a die solution that is completely harmless to the ac system and is designed exactly for this purpose, to find leaks, good luck

Aug 04, 2009 | 1997 GMC Suburban

1 Answer

Where do i find the orafice on aa 1997 GMC Suburban with rear air. Also, I am replacing the compressor and accumulatro. Instructions say to add oil to the accumlator low side. How do i determine the low...

The orifice tube is located on the passenger side below the air filter housing between the connector and the condenser line. Break open connection and use a place of needle nose to gently twist it out of the tubing or used could use the proper tool if available. lol
Follow the line back to the compressor from the accumulator/ dryer and that will you which is the low side. Not that you should find a high side connection on the dryer.

Jul 31, 2009 | 1997 GMC Suburban

1 Answer

How much ac compressor oil is needed in a 1997 Buick Lesabre?


The best way to know how much oil is needed is to first drain the old compressor. If the old compressor has more that 2oz, add the amount that came out of the old compressor. If less than 2oz, add only 2oz.

Jul 18, 2009 | 1997 Buick LeSabre

2 Answers

AC system's lubrication amount?

The oil spec is PAG 150--68.00 ounces. General Motors issues Bulletin # 02-01-39-004B replacing PAG 150 oil with a lower viscocity oil. Thus, now indicates PAG 46 (P46D) oil for those vehicles.
There is a high pressure side and low pressure side to the system. The high vapor=compressor to the condensor. Low side vapor=compressor to evaporator. Your system will use R134a freon.

The A/C is a sealed system and when the compressor fails it circulates debris throughout the A/C system and contaminates it. Before replacing the compressor several other A/C parts have to be checked or changed.
Typically, the condenser should be flushed to remove any debris or contaminated compressor oil. Use approved flushing agents (aresol or liquid pour types), that evaporate quickly and don't leave any residue in the system. You will also need access to 'DRY' compressed air or nitrogen to push the flush through the system. Nitrogen (an inert gas), is best because it doesn't introduce moisture into the system. You need to do this a couple of times.
Accumulator or receiver drier should be replaced when you are replacing your A/C compressor. If don't replace your accumulator or drier you will probably void your compressor warranty. It's virtually mandintory to replace the orifice tube or expansion valve. The openings are usually about .050" and are quickly plugged. Be sure to clean all hose assemblies internally prior to installing your new compressor. Not doing this could contaminate your new compressor. Flush both ways until the flush agent exiting is clean, you will need to remove the hose assemblies to do this.
After you have cleaned, inspected and replaced all the parts, you connect the vacuum pump and remove the air from the system. Make sure it holds pressure. Then recharge the system with the proper freon and oil to the system specified levels.

No matter why you are replacing the A/C compressor there is a lot of other related work that has to be completed before you install the new compressor. Hope this helps, good luck.

Apr 29, 2009 | 1994 GMC Suburban

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