Question about 2001 Chevrolet Silverado 2500HD
The O/2 senser will not make it qit but the fuel pump and the ingition module will. does it start right back up? Fuel pumps heat up and quit sometimes opened the relay and it cools and or is cycled as you try to restart and it reclosesand you drive on. an amp test on the pump draw or even a scope test of the pump may isolate it as the bad boy. Pumps build up pressure and heat if the fuel filter is partly clogged. Change the filter as preventale maintanance and try to blow though the old one if it blows though hard it may be too late for the pump and you may have to change it too as the stuff that went thohg the pump that stopped up the filter. You only can heat the pump so much before its bad if you find it is change the relay also and check the ground wire where it connectes to the frame. The hanger unit that the pump is in fails too and it has to be changed on most models as you can't buy the pump any other way because it fails as often as the pump or is damaged as the pump fails. The ingtion ciol can fail, but not likly to start right back up you gota wait. The ECM cando it too but is not a common problem. Their may be engine control codes in the computer to help you determine the problem
Posted on May 13, 2010
Don't know if u still need the help but I have a 2001 chevy silverado 2500 HD 8.1 and it was cutting off on me and finally just wouldn't crank at all . Never could get a straight answer from chevy techs or mechanics but it is your crank shaft sensor . Chevy currently has a recall on this problem but only for the 2500 not the HD so it only cost me about $170 to replace and if this is your problem please call chevy and report it b/c they are not recalling the problem in the 2500 HD because they have not had enough people complain or report it ..I am still waiting for them to refund me my money for this defect. ut yes the crank shaft sensor sovled my problem hasn't had that issue at all since I replaced it. Hope this helps someone out there
Posted on Jun 27, 2012
I have the same size engine it was doing the exact samething chage the crankshaft sensor you will be wasting money on all the rest i changed mine and it runs like new more horsepower better responce
Posted on May 21, 2010
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Posted on Jan 02, 2017
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