Question about 2001 Chevrolet Silverado 1500

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Hard starting and kills after starting - 2001 Chevrolet Silverado 1500

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I'm listing all the basic items that could possibly hang you up. By your write up I would say its the *fuel pump but it doesn't hurt to check the rest.
Charge the battery for three min and load test it( this is best done by a repair shop a load tester is expensive .If the battery if more than 5yrs old you may want to replace it.
If battery does not pass load test replace it.
Whatever you decide the rest of the items can NOT be checked out without a fully charged battery.
Check ignition switch and starter relay for B+ going to them and leaving them. Check starter circuit. Make sure the CORRECT AMOUNT OF B+ is making it to starter ( use a digital voltmeter). If B+ (12 volts) is making it to the starter and it doesn't crank then the starter is defective. Do a starter current draw test to verify this or remove the starter and have it bench tested.
If starter cranks now your into, coil testing .
Pull a spark plug hook it up to a spark tester and ground it, now crank the engine if you get spark coil is ok and in all likelihood so is module.
If you don't get spark test for spark at the coil wire.or coil pack which ever is applicable.
If you get spark here and don't get it at the spark plug wire problem is at distributor cap , rotor or spark plug wire.or ignition module. If plugs look bad use a fresh plug to do testing and naturally replace them.
If all of the above are a-ok.
Next is fuel checks.
*Easiest fuel check is to put key into ignition cylinder and turn to on position. Lister for pump to buzz or hum. if it doesn't then check fuel pump relay for B+ going to it and leaving it and going to the pump. If B+ making it to pump and it doesn't turn on the pump is your problem. If B+ not making it to pump either the relay or the ignition switch is defective.IN YOUR CASE IT SOUND LIKE YOU HAVE RESIDUAL PRESSURE BUT NO VOLUME TO FOLLOW THROUGH. ( PUMP DYING)
Naturally if the pump is defective have a repair shop do the repair . Its dangerous and a real pain.
Good Luck

Posted on May 04, 2010

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