Question about 2000 GMC Sonoma Extended Cab

1 Answer

What color is the plastic cap on the low side for ac.

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 4,669 Answers

If they are colored it is blue. Sometimes the they are both black

Posted on Jul 12, 2010


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Where is low side of air conditoner

There are 2 lines coming from the firewall on any vehicle that has ac. One is the high presure the other is the low presure. Follow each line until you find fill valve.

This valve is used to fill the system. It will be covered by a plastic cap that screws on. Each side, the high and low has one of these valves. Often the cap is labeled with an "L" for low or "H" for high. Another way to tell is to flip the caps upside down. The low presure side will always be the smaller of the 2.

Jul 05, 2014 | 2006 Ford F-150

1 Answer

Cant find the low port line on ac on a 2002 ford expedition i looked on all ac lines there is a green cap above the brake booster but that cant be it not a steel line its plastic and o

Hi, if your charge hose fits on the fitting under the green cap, then that is the right one. Plastic can handle the pressure on the low side. The low side port is always on the line that goes from the firewall to the compressor. So you can trace that line across the firewall and on to the compressor to make sure.

Aug 13, 2011 | Ford Expedition Cars & Trucks

1 Answer


Find the air compressor located on the engine and follow the two metal tubes coming out of it. One tube is the high side and the other is the low side. Keep following them until you find a tee with a plastic cap. The red cap is the high side, the blue cap is the low side. If you're trying to re-charge the AC then the recharge fitting will only go on the low side, it won't fit the high side on purpose.

Jun 10, 2011 | 2002 Chevrolet S-10

2 Answers

I need to know how to find the low port to add refrigerant to the AC on my 1998 Buick regal.

Follow the AC lines and look for a plastic cap. There are 2, The big one is the high side and the smaller one is the low side. Unscrew cap to add freon.

Aug 20, 2010 | 1998 Buick Regal

2 Answers

Where is the low side of the a/c system located? want to recharge the a/c

When you open the hood, the low pressure side valve will be just about in front of you just aft of the radiator. The steel tube with a light blue colored plastic cap with the letter "L" on it is your low pressure side. If the cap is missing, the valve will look much like a large tire valve.

Jul 22, 2010 | 2003 Honda Civic

2 Answers

Ac is low on freon where is low side to fill

The low side freon port is always located between the compressor and the accumulator. The low side port also has a blue/light blue colored cap. The HIGH side will always have a red cap.

Jun 07, 2010 | 2002 Suzuki XL-7

2 Answers

Locate low pessure side of a/c system

They are most of the time on the ac lines coming off the compressor ,right where the compressor is,the low side is on the large line going into the firewall,just follow the ac line,

Jun 06, 2010 | 1994 Toyota Pickup

1 Answer

What color of the ac pipe do i add the 134a freon to in my car

if you are asking if you add refrigerant to the high side or low side, you add it to the low side. the single recharge hose only connects to the low side, which has a smaller connector than the high side. so you can't make a mistake. if the caps are colored red and blue, the blue would be the low side.

May 16, 2010 | 2002 Honda Accord

2 Answers

Where is the port for recharging ac?

the ports are right in the lines that go to the ac they should have a red for high side and a green for the low side

Aug 11, 2009 | 2000 Lincoln LS

1 Answer

AC Low Pressure location on 2004 Chevy Suburban

You find the AC low pressure at the top of the compressor, orientated toward you , facing the front of the vehicle. You can also follow the compressor line to reach the port.

The valve is covered a plastic cap covering it.
Near the compressor you find two ports, the high port and low port.

To find out which one is the low port, run the air conditioner for a couple of minutes withthe engine on.
Then turn off the care and touch the lines from compressor to the two ports covered with plastic caps. Only one of the pipes will be cold, the cold line will lead you to the low port.


Jun 18, 2009 | 2004 Chevrolet Suburban

Not finding what you are looking for?
2000 GMC Sonoma Extended Cab Logo

Related Topics:

94 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts


Level 3 Expert

81423 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22359 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides