K2500 burb evap leak
Hi there. We have just acquired a new to us 2010 k2500 6L 6l90 3.7 burb. However with the gas cap tight and in good condition I keep getting a p0442 evap leak at ~750miles after erasing the code it r...
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Yes, you have 2 fuel tanks unless they changed something in 2010. The rear one is up above the spare tire carrier, the main one along the inside of the driver's side frame rail under the driver's seat and rear seat. Bad news is that the evap cannister is located above the main fuel tank. Each tank has its own in-tank level sensor and electric fuel pump. The fuel filler feeds the rear tank which is connected to the front tank by a filler hose. The rear pump cycles on/off and sends fuel to the front tank according to instructions from the PCM.
There are evap lines that connect the rear tank, front tank, cannister and engine.
You can drop the tanks at home. Last Spring I removed both tanks and replaced both fuel pumps, all of the fuel lines and brakes lines with stainless. Yes, GM still uses uncoated steel for the lines and they corrode above the fuel tank. Whole job took me about a month of evenings and weekends.
There are evap lines that connect the rear tank, front tank, cannister and engine.
You can drop the tanks at home. Last Spring I removed both tanks and replaced both fuel pumps, all of the fuel lines and brakes lines with stainless. Yes, GM still uses uncoated steel for the lines and they corrode above the fuel tank. Whole job took me about a month of evenings and weekends.
