new to the 6.2L

[tRustyK5]

Have you physically checked each glow plug? Grab a test light. Alligator clip to battery pos side. unplug a glow plug and touch the tip of the test light to the spade of the GP. If the test light comes on it's most likely a good glow plug. Generally anything under 5 working glow plugs can make for hard starting.

Rene

 

[wk96]

you know, something I probably should have mentioned is that right before it quit starting, the two times that I went out to start it it would act like I was holding the gas down in both neutral and park. the pedal was not stuck, and my foot was nowhere near the gas.

might be related? or am I going to be fixing two separate issues..

 

[AJMBLAZER]

The Chilton's, Hayne's, and GM service manuals all have a flow chart to trouble shooting starting issues like this. I had a similar issue a while ago and it turned out to be my gp controller.

 

[kennyw]

you know, something I probably should have mentioned is that right before it quit starting, the two times that I went out to start it it would act like I was holding the gas down in both neutral and park. the pedal was not stuck, and my foot was nowhere near the gas.

might be related? or am I going to be fixing two separate issues..

Start with the GP test Rene gave you first, then address other issues if the GP's test good.

Surging at idle can indicate air in the fuel lines though. So check your fuel system for leaks, or if you recently replaced the fuel filter it may require a purge of the lines to get all of the air out.

 

[6.2Blazer]

In regards to the axles, I'm still not sure what you have. You say "both the front and rears are D60 14-bolt corporates with trac-locks"........well, D60's and 14-bolts are two completely different axles, so you don't have a 14-bolt D60 Also, Trac-locks were not made for 14-bolts. A quick picture of both would let us determine for sure.

The surging/high rpm issue really sounds like air in the lines. After the truck sits overnight look real closely for any fuel leaks. If a fuel line to the engine leaks enough then obviously no fuel in the line and the engine will suck in air. Diesels are super fussy if they get air in the fuel lines and will NOT start.

From my experience if it's pretty hot outside the truck will still start but requires some cranking time.

 

[tRustyK5]

Yup, and it doesn't take much air to have a starting issue. My pick-up has a tiny little fuel line leak. Can't see any drips anywhere, just a moist section of line. If I park it facing uphill in my driveway it'll take 6 or 7 attempts to get it to start and stay running in the morning. If I park it somewhere level, or nose downhill it starts and runs just fine.

Yes I need to fix that...

Rene

 

[wk96]

thanks for all the help guys. I really appreciate it. I'll get out to the truck on thursday to grab a few photos, I think