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GMC Forum: 98 Sonoma AC circuit diagram
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Old 03-21-2011, 07:17 PM
jwg930 jwg930 is offline
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Join Date: Mar 2011
Posts: 2
Default 98 Sonoma AC circuit diagram

No power gets to compressor from main relay/fuse box under hood. Where can I find circuit diagram for 98 Sonoma AC. It is not in Haines. Is there a connecter between relay box and compressor other than the one at the compressor?
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Old 03-22-2011, 01:04 AM
lmleck lmleck is offline
Join Date: Nov 2010
Posts: 61

The connector on the side of the accumulator (the big silver can) is a pressure switch.
If the system is out of refrigerant, there is low or no pressure, and that
switch disconnects power to the compressor.
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