SOURCE: 2002 GMC YUKON XL 1500 MOTOR DIES AFTER GOING
Check the fuel cap!! If the vacuum relief is not working it can impede the fuel flow and cause the engine to shut down or not restart after a stop. Waiting usually gives things a chance to stabalize and the engine will restsrt. When this happens again try loosening the cap and see if the engine will restart.....If it restarts immediately, REPLACE the fuel cap..Do Not leave it loose because this will cause other problems. If it is not the fuel cap the problem may be the filter, the fuel pump, or aome other fuel system malfunction.
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SOURCE: need a 2002 lb7 duramax firing order diagram
firing order is 12784563 cyl placement is drivers side front to rear 2468 pass side front to rear 1357
SOURCE: 2002 GMC 2500 HD Duramax starter will skip off
Check flywheel teeth. Might be missing some teeth on the flywheel. Remove starter and you should be able to see flywheel. Turn flywheel and check all teeth.
SOURCE: My 2002 GMC Denali XL doesn't like to start on the first crank
the fuel filter would be the first place i would go, especially if it has not been replaced recently. it can cause slow priming of the fuel pump, resulting in hard starting. in addition, if your truck has never been tuned up, a set of spark plugs could make the world of difference - i believe on your particular truck it is recommended to change them at least every 100,000 M. good luck!
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