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Re: 2000 GMC Hard Starting
You may have gotten a bad fuel pump - should be under warrenty. Either that or you have a leak in a fuel line somewhere.
Put the fuel gauge on it, pressurize the system (have someone turn key to on), then pinch off the fuel supply & return lines. If pressure leaks off, you have a bad injector (but you said truck runs fine, so prolly not the case).
Then do the same thing pinching off the supply line only. If you have leak off, then bad fuel pump check valve or leak in return line.
Pick up a Haynes manual. This process is described in detail in addition to other process of elimination tests.
Also try replacing your fuel pump fuse.
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2002 1500 Ext. Cab 4.8L 2wd.
K&N FIPK, Cat Back Exhaust, Rancho RSX Shocks, Silverstar Headlights High & Low, Infinity Reference Door Speakers & 10" Dual Voice Coil Sub. 265/75/16 BFG AT/KO's, Spray-In Bed Liner, Hella FF75 Fog Lights, Hella FF75 Driving Lights.
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