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Chevy Silverado and GMC Sierra Duramax Diesel Questions

359 messages,  Last post on Mar 02, 2013 at 8:38 AM

You are in the Chevrolet Silverado & GMC Sierra Forum.

What is this discussion about? Chevrolet Silverado 2500, GMC Sierra 2500, Chevrolet Silverado 3500, GMC Sierra 3500, Engine, Diesel, Truck

Messages Page 37 of 37

#355 of 359 Re: 2004 Duramax No Start [gmcustsvcsarah] by weephee

Sep 20, 2012 (6:51 pm)

Replying to: gmcustsvcsarah (Sep 18, 2012 11:05 am)
Still no solution after two weeks at GM Chev dealer. Can anyone tell me what the supply voltage is to the injectors. I believe supply voltage is from the FICM. Mechanic says it should be 48 volts but I can't find that anywhere in the shop manual. Is is 48 volts or 12 volts. THX.

#356 of 359 Re: 2004 Duramax No Start [weephee] by weephee

Sep 28, 2012 (6:59 pm)

Replying to: weephee (Sep 20, 2012 6:51 pm)
Truck has now been at the dealers for 3 weeks and still no start. Gave them another ECM which they programmed and it made no difference. BTw the voltage on the injectors is 48 volts. They also did a fuel by-pass on the two injector rails and the results were within GM tolerances so that isn't the problem. Now they want to remove a few injectors and have them tested to see if that might be the problem. When they did the by-pass test there were a lot of air bubbles entering the injectors. I think they might be coming from the fuel filter hand pump so I've ordered a gasket set to replace the 0-rings. Also replacing the water collector at the bottom of the fuel filter. Is anyone interested in what is happening here. If I don't hear from someone, I guess I will quit reporting.

#357 of 359 Re: 2004 Duramax No Start [weephee] by drjones1235

Oct 07, 2012 (8:46 am)

Replying to: weephee (Sep 28, 2012 6:59 pm)
i am currently going through same problam changed steering columb truck started ran fine put my steering wheel with computer buttons on steering wheel will not start again bin two months no truck if you solve this problem could you please let me know ill do the same thanks

#358 of 359 Re: 2004 Duramax No Start [drjones1235] by weephee

Oct 10, 2012 (4:17 am)

Replying to: drjones1235 (Oct 07, 2012 8:46 am)
Hi drjones1235. The only thing that we might have in common on these trucks is that my clockspring is broken so I get an airbag trouble code and the steering wheel buttons do not work. Are you getting any trouble codes. Is your truck at a gm dealer I will change the clock spring this weekend and see if that makes a difference although I can't see why. Let me know if you make any progress.

#359 of 359 Duramax low oil pressure by mrsoupdad

Mar 02, 2013 (8:38 am)

My 2003 Chevrolet Duramax shows low oil pressure on the gauge after it warms up. I have no power loss, it doesn't ping or knock, no smoke at all. Everything seems fine, but this oil pressure issue freaks me out. How/ where do I check it with a gauge?

Messages Page 37 of 37

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