My 2000 cavalier does not run on cng when it is supposed to. It internittently fails over to gasoline when there is plenty of cng fuel. I took it to the dealer and they "determined" that "the Low Side cut out is bad". They said the part was $1000. I wanted to see if I could buy it somewhere else, but the parts store couldn't place the part numbers they gave me "52369516" for the "valve" and 52369517 for the seal (o-ring, I think). I have a 2002 maintenance manual and I could not match their part number or description either. I think this is the low pressure lock out solenoid, but I'm not sure. Does anyone have experience with this? Can anyone recommend a good place to order factory or equivalent parts?
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Cav. Low Side Cut-Off Switch Diagnosis by Chevy
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