If this is your first visit to The TPMS Forum, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.When you hear the phrase Extang Engineered it really means something. It began when our values and integrity met bold engineering excellence. A product that is so well designed, and built to such demanding exact standards, that it performs beyond the truck owner's highest expectations.Aug 15, 2012 · Testing a misfire code (P0300, P0301, P0302, P0303, P0304) isn't hard and I'll explain some of the testing tips and techniques that are performed to get the bottom of the misfire code and misfire condition. The info in this article applies to the GM 2.2L 4 cylinder equipped Chevrolet Cavalier, or Pontiac Sunfire, or Chevrolet Sonoma, or GMC Sonoma. RealTruck has the biggest selection of Truck Racks with image galleries, installation videos, and product experts standing by to help you make the right choice for your truck. Free shipping in the lower 48 United States.OBDII/EOBD diagnostics trouble codes definition. If your car supports OBD II or EOBD, then you can already use almost 5000 generic OBDII codes.These codes are from PowerTrain series (P0XXX, P2XXX, P34XX), Body Series (B0XXX), Chassis series (C0XXX), Network series (U0XXX, U2XXX, U3XXX).