chevy s1500 4.3

40

Asked by May 10, 2015 at 10:31 PM about the 2001 Chevrolet Silverado 1500 Base Long Bed

Question type: Maintenance & Repair

I've been having problems with my truck 2001 chevy s1500 4.3  had replaced the fuel
pump when it went out. Since then i've had nothing but issues sometimes going down
the road after been running for 10 mins or so it stalls out and can recrank it several
more times each running a short bit before it no longer will. Ignition module tested ok
at autozone, Throttle position sensor shows a clean sweep on the voltages.   But right
now in the driveway  i have no spark and fuel pump is not activating.  I'm pulling my
hair out. Please help  I will do what is asked tomorrow.

Thanks,
Jason

9 Answers

75,185

Check the relay,s to the pump,and the main fuse,s under hood in fuse box.

40

Ok found a relay to Fpump bad by using the horn to test them all. Fuel pump back in action, but no spark. Replaced worn plug wires yesterday no change. I am getting 12v at Ignition control module and crankshaft sensor. All fuses under hood and dash pass continuity.

1 people found this helpful.
75,185

Sound,s like the ICM,you checked it for volt,s but that does not mean it is firing to plug,etheir this or your igintion switch.

1 people found this helpful.
40

I did take it to autozone and they ran the test 4 or 5 times they said it was good should I try it again or goto advance auto and let them try? Where is the ignition switch you mean where the key is?

1 people found this helpful.
75,185

Yes,where key is,have that ICM checked again,then check the key cylinder.

40

Ok doing that today. How would I check the key cylinder? Have a chiltons that shows how to remove it. What do you mean by check it? Thanks Jason

1 people found this helpful.
40

ok, they tested ign control module 4 times to heat it up still passed

1 people found this helpful.
75,185

Nosajseveer, check the coil on the truck,

Best Answer Mark helpful
40

update. Check resistances on coil 5.8k pin1 to plug boot. pins 1 and 3 1.1 ohms test light on white wire when cranking flashes light. I now have spark and when i press on plug motor dies. So I'll get a new connector and see how that goes. Thanks a bunch

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