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Re: p0442 help
Eh, a p0442 has nothing to do with the EGR system. More information can be found here: http://www.obd-codes.com/p0442
If re-securing the gas cap doesn't do it, there is a a possibility that the cap can be bad. There is also a possibility that there actually is a leak in the evaporative control system. These can be very difficult to locate without the help of a pro with the proper testing equipment (smoke machine).
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99 Rodeo LS 3.5L Stroker V-6, 4wd, 31x10.5x15 2 inch Trooper lift, Aisin manual hubs.
03 GMC Envoy XL SLT 4x4 5.3L V8
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