Question about 2001 Chevrolet Silverado 3500
Go to Autozone.com and get a free wiring diagram by registering your truck. They also provide fusebox layouts. Some GM units use Relays for the Ignition.
You should be able to trace the power from the Ignition switch, through the Relay and out to the ECM. Then it is a matter of finding out where the power dies.
Now it takes a pulse to fire the spark and you should have a crankshaft sensor. Check your connections there.
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Posted on Nov 08, 2012
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Posted on Jan 02, 2017
SOURCE: hard to start chevy 350 vortec
You will need to do a fuel pump pressure leak-down test, the pump must not loose more than 5 PSI overnight, u will need a cheap fuel pressure test guage, the test port is on the fuel supply rail to the injectors on the intake manifold, it looks like a tire valve but metal with a plastic cap on it, u may be able to borrow this guage from Kragen, Autozone or a parts store like them, if not they are very cheap, less than $20 US. Run the engine with the test guage hooked up, turn off the engine and then check it in an hour or so, if it drops more than 5 PSI then u will need to replace the fuel pump in the gas tank. One note make sure the connection for the guage is tight with no leakage or the test is invalid
Posted on Jan 16, 2009
fallow the large house from the top of the radiator back to the engine, it will connect at a housing that is called a goose neck (because that is what it looks like) the goose neck housing will have two bolts in it. your thermostat will be behind the gooseneck.
Posted on Sep 30, 2009
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