Hey there,

Still trying to troubleshoot my starting problem on my 2003. Works one start, the next is doesn't? I have done all the fuel related things talked about on this site, except injectors and nothing has made it worse or better. Dealer told me my injectors are fine while getting tested a while back. I drove my truck from Vancouver to whistler today and it was flying, lots of power blowing up the hills. Funny thing is it started aweful! I am convinced this injectors thing is a hoax, my truck would not have preformed the way it did today if the fuel delievery was bad. Lately is starts for about a second then dies, seems fuel related but I just can't figure out where if it is.

I am curious about the starter motor relay, just wondering if any one knows where it may be under the hood. Looks to be part of the intergrated power module? I am wondering if its latching sometimes for the required amount of time and not other times. Once I discover where it is, my plan is to try and find another one the same number and swap them to troubleshoot. I am also curious about the signal coming from the generator to the powertrain control module? The ground provided for the starter motor relay is in the Powertrain Control module, wish I knew how this box works. Also suspecting the ignition switch, maybe a short someplace?

I am onto the ignition because I have discovered if I push the key into the ignition while turning it over there is sometimes a different result then if i pull the key outwards while turning.

I am lost I like mostly everyone.

 

Is the truck not turning over????? Yes, many folks have had issues with there 03' trucks with bad ignition switchs or burnt wires going to the blower motor. It is not unreasonable to think you may have a bad one. Pull the colmn cover and take a look to see if it has signs of being hot previously. Very, Very Possible.