Question about 2003 Chevrolet Silverado 1500

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2003 chevy 1500 why are there 2 check valves on the high side and none on the low?

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One is the low side and one is the high side. The orifice tube is located in the screw fitting between them.

Posted on Jul 14, 2010


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On my 1989 chevy the switgh tha goes from hi beam to low beam dosent work

check down the column to see if the rod is still attached to the switch if it is the the high low switch is bad

Apr 17, 2014 | 2003 Chevrolet Suburban 1500

1 Answer

Need to recharge 2003 chevy malibu air conditioner. where do i find the intake to recharge it.

under the hood there is two a/c valves, one says H for high side and one says L for low side... hook up to the low side and turn the a/c on max with the car running and then charge. you really need a pressure gauge to know how much to put in. too much freon will make it blow hot also, you need the right amount of pressures, just go slow filling it up and keep checking the a.c temp out of the vents.

Jul 11, 2010 | 2003 Chevrolet Malibu

1 Answer

I have a 2003 chevy Pickup 1500 5.3. When I start the car the air is cold. I drive a few blocks then it blows warm air. What coluld the problem be

low charge or too high of a charge.
the low side should read 25 to45 psi at idle.
But, if the a/c behaves this way, there might be a restriction in the orifice tube near the firewall

Good luck to you in fixing this problem.

Jul 10, 2010 | 2003 Chevrolet Silverado 2500HD

1 Answer

Need to know how to replace refrigerant pressure sensor on 2003 Chevy Silverado 1500 air conditioner compressor.

The low pressure switch screws into the side of the accumulator and it should have a shrader valve so you can replace it without loosing all of your refrigerant.

Apr 19, 2010 | Chevrolet 1500 Cars & Trucks

1 Answer

1500 chevy 2003 4x4 wheel low works but 4x4 high light wont come on or works

The ported vacuum switch is bad it seems or clogged up. Check the vacuum lines for leaks first. The switch is mounted on the axle

Jan 09, 2010 | 2003 Chevrolet Silverado 1500

1 Answer

2001 chevy suburban - my A/C clicks bad when RPM goes up.. other than that the A/C works fine

if its cycling on and off have the freon level checked, also check the pressure switch at the accumulator there is also one on back of the compressor, if the pressure is too high or too low theses switchs shut off power to the compressor, the low side one is notorious for failure becaude it is constantly working .

Aug 25, 2009 | 2003 Chevrolet Suburban 1500

2 Answers

Low oil pressure on 2001 Suburban

your oil sensor comes on at less than ten psi, you may have internal engine damage how many miles on engine, any gum up inside engine, you can try to put on a high pressure high volume melling oil pump to try to help for the time being, but you may need to have it torn and repaired.

Aug 03, 2009 | 2003 Chevrolet Suburban 1500

1 Answer

I cannot differentiate between the low pressure and high pressure

This is a little A/C 101. Follow the A/C lines. All A/C systems have a high pressure side and a low pressure side. The high pressure side is from the compressor to the condenser coil on the front of the vehicle to the evaporator coil in the dash. At the expansion valve in the evaporator the pressure drops. At the expansion valve the refrigerant changes from a liquid to a gas. This provides the cooling. The low pressure side is from the evaporator back to the compressor. Usually the high pressure lines are smaller than the low pressure (suction) lines.

Jun 13, 2009 | 2003 Chevrolet Silverado 1500

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