Question about 2003 GMC Sierra 2500HD

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2003 sierra 4.8 cranks but wont start!

Woke up this morning and the trck would not crank got starter rebuilt and installed. now it cranks but does not start. tried gas in the intake still no diffrence. checked fuses in electrical center under hood and bothside panels no fuses blown. please help stranded 500kms away from home!

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The crankshaft postion sensor is right above the starter on the engine block. Either it got broken during the starter replacement or the connector is unplugged, no crank sensor equals no spark.

Posted on Jan 09, 2009

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I am having an electrical problem with my 2002 GMC HD2500 Dura Max diesel.....did not crank at all this morning. Both batteries were 4+ years old. Figuring it was the batteries, I just went ahead and...


sounds like starter motor/solenoid problem, try hitting the starter motor with a hammer , a couple of sharp hits may loosen off the bendix if this is the problem, if starts replace the starter motor

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2003 truck starter turn over but have power


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Where is crankshaft position sensor located 1996 gmc sierra 1500


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2 Answers

This morning tried to start my 03 sierra 1500, i opened the driver door cab lights came on, put key into the ignition turned the key and the lights went out and the truck would not even crank nothing....


Try jump starting it. I suspect your battery is dead. After time they don't hold a charge as deep as they once did. Have it load tested to verify. Your lights and other options don't draw nearly what your starter needs.

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If battry is good starter solonoid needs to be replaced--best to instal complete rebuilt

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1 Answer

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check for signal at starter when key is turned signal is the small terminal.no sound doesnt eliminate the starter as the problem if you have no signal chek the clutch safty switch if it fails truck wont start

May 31, 2009 | 2003 GMC Sierra 2500HD

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