2005 chevy silverado won;t start.

check high tention coil wire, coil wire going to dist cap with test light, if test light light up, it good also check dist rotor, and if that good might be pick up coil , the module might be bad, let me know what happen Bob

engine is shot replace.throw rod and main bearing and rod is bent or broken.

fuel injection pump is failin or has issues--getta haynes manual for pro car maintenance

Same problem here, found break in wiring harness at cross-member behind cab. did have bed removed for easy access. Ground wire guilty party.

neutral safety switch on the driver side of the trans where the shift cable hooks up.

Check and make sure your glow plug controller is putting out voltage to your glow plugs, make sure voltage to your glow plugs is cycling. if it is not, at the front of the engine there is a temperature switch, if this switch is not working your glow plug controller will not work. also make sure you are getting diesel to your injector pump, if you are not, there is a high pressure switch at the back of the engine right behind the glow plug controller, if this switch is not working, your injector pump will not get fuel. also make sure both batteries are fulley charged, if one is low, your diesel will never start. you can jump out these switches, if your truck starts after bypassing, just make sure to replace them. i have a 1993 silverado C3500HD 2WD. good luck!

there is a petcock at the bottom of the rad drain ti from there and use a antifreeze tester to check protection temp

fuel problem check ur pump

sounds like a bad line on compressor