Question about 1994 GMC Sierra

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Truck start fine when sitting overnight (cold or ht weather). after driving for 20 miles or more will barely crank over to start. then after it sits for 45-60 minutes, it starts fine.

Have replace battery, alternator and starter

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The problem that you're having is caused by a code DTC you need to replace the crankshaft position sensor part number 10456607 I have a 94 GMC 1500 v6 this bulletin is on the Internet GM Technical Bulletin reference number 00 06 04 014 I hope this helps good luck

Posted on Jan 09, 2013

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Posted on Jan 02, 2017

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SOURCE: truck takes 30-40 seconds of cranking to start

Malfunctioning fuel system, Fuel injector[s] leaking
Check fuel pump,fuel pressure regulator/fuel filter also

Posted on Dec 12, 2009

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SOURCE: My 2002 GMC Denali XL doesn't like to start on the first crank

the fuel filter would be the first place i would go, especially if it has not been replaced recently. it can cause slow priming of the fuel pump, resulting in hard starting. in addition, if your truck has never been tuned up, a set of spark plugs could make the world of difference - i believe on your particular truck it is recommended to change them at least every 100,000 M. good luck!

Posted on May 28, 2010

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