Question about 2005 GMC Savana
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Posted on Jan 02, 2017
The low side port of the 2005 GMC savanna Van is located on the low pressure side of the compressor.
This is found by locating the compressor driven by a belt that has a clutch that engages and disengages as the a/c cycles.
The low pressure piping is always in the larger diameter piping, and the high pressure side is always contained in the smaller diameter piping.
Therefore, follow the thick pipes from the compressor up to the accumulator, which looks like a large can of soup. On the accumulator receiver/drier is a port that connects to the tube that is connected to the can of r134a freon refrigerant.
Simply quick connect the tube to the low side port, which is located on the 'thick' tubing or on the accumulator and then fill until the low side pressure is 25 psi to 45 psi while the compressor is running.
When the car is off and the compressor is not running, the pressure should be 75 psi to 100 psi on a hot day.
Hopefully the system doesn't have a leak slow or fast in it.
Posted on Aug 17, 2010
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The ambient light sensor indicates daylight.
The vehicle is not in the PARK position.
When the above conditions are met, the lamp control module (LCM) supplies battery positive voltage (B+) to the low beam headlamps through CKT 589 (GRY), the DRL resistor, and CKT 12 (TAN). The DRL resistor reduces the voltage supplied by the LCM. The low beam headlamps light at a reduced intensity. The DRL disable if the vehicle is placed in the PARK position. When the ambient light sensor indicates darkness, the low beam headlamps automatically switch from a reduced intensity to a regular intensity.
Lamp Control Module (LCM)
In the center of the IP, below the center heater outlets
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