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'03 Gmc 1500 Z71 5.3 Will Not Crank

fastdevin1984

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fastdevin1984 New Member

fastdevin1984

Posted
Posted

I was sitting at a stop light in 5:00 traffic when my truck began sputtering and died. When I tried to re-start it it will not turn over. The temp outside was around 80F so i figured my battery had lost a cell. Put in a new battery and still no action when I try to crank it. Everything electrical is working correctly. The cluster is working and shows i have 10-12 volts as it always does. I don't suspect the starter because that wouldn't cause it to die. Yes it has gas and yes i cleaned the terminals when installing the other battery.The engine light and security lights are not illuminated. I'm thinking a fuse or a relay but everything I've checked that route is not blown, Anyone have any advice or similar experience?

reiling3 Enthusiast

reiling3

Posted
Posted

When my starter went out it did the the same thing, except the sputtering and dying. Maybe tap on the starter a few times with a hammer or pliers, that's how I trouble-shot mine.

owenbyc Enthusiast

owenbyc

Posted
Posted

it dependes if it turns over. if it doesnt turn over i think it would be pretty easy. starter. wire going to starter. probably even a fuse or relay going to starter now. if it does turn over i bet i know your problem. i can pretty much tell you how to check it.

frdfandc Enthusiast

frdfandc

Posted
Posted

Since you had fuel in it, its possible the fuel pump quit working first since it sputtered and died.

 

On my 2003 I ran out of fuel about 100 yards from a gas station. Truck sputtered and died. Tried to restart, nothing. I coasted up to a pump and filled up. When I went to start the truck, nothing. No click, no start, nada. I started checking fuses in the under hood fuse box. Found one of the 2 PCM fuses blown.

 

I think when I tried to start the truck right after it sputtered and died, the fuel pump signal from the PCM pulled too many amps and popped the fuse.

 

Check your under hood fuses. Should take you 10 mins to check.

 

The one that blew, IIRC, was number six in the picture. Might have been the one right above it. But I'm almost 100% sure it was a 20 amp fuse that I replaced.

 

2010-01-01_155126_fuse.gif

owenbyc Enthusiast

owenbyc

Posted
Posted

exactly frdfandc i pump fuel pump quit too running down the road leaving work. i got it towed to the house and checked some things. when i turned the switch i didnt hear the fuel pump prime anymore the 2 second prime. i hooked up a fuel pressure guage and tried to prime and crank no psi what so ever. i hooked up a cheapo test light to the fuel pump prime terminal which is right beside the fuel pump relay. i turned the switch to run and the test light lit up for 2 seconds. so i knew my fuel pump relay and relay control circuits were working right. so i knew it was the pump. i actually knew right when i broke down and i kept trying to crank it. chevys are notorious for pump problems. my mechanic friend at a local dealer told me buy the airtex brand at advance or autozone. 271 for the pump. i had about 22-24 gallons of gas.so i took the bed off. 8 bolts unhooked the taillights and taillight wire fastners. removed the tailgate and the 3 screws at the fuel door. so much easier. good luck. if that is your problem i think the delco or airtex are both great fuel pumps but do not buy the bosch brand from what ive heard.

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