Its been a ruff 6 months, and an even a longer story, but I haven't started my 04 lly in six months Around 15000 miles, had it serviced prier to it sitting. Is there anything I should do before and after I start the Duramax?
You might look under the hood for any obvious crap like a squirrel's nest, mouse damage, etc. I'd look in the air filter chamber too, you never know what might have crawled in there.
Take a look up the tail pipe with a flashlight too. Check fluids, tire pressure, lights, and brakes for pedal pressure. If all looks good, fire it up and listen carefully under the hood for odd sounds for a few minutes at idle.
After a little bit, increase RPM's to about 1500, and listen more. If all sounds good and engine is warmed up I'd take it out for a drive, starting slowly at first.
You might apply some light foot pressure to the brakes while going 5 - 15 mph at first to get the rust of the rotor. If all is good, go with it.
Ideally, you'd like to circulate the engine oil before the engine fires up, to avoid scuffing, because the oil has had a long time to drain away from all the moving parts. One way this can be done by 'tickling' the starter a few times before keeping it on long enough to actually start the engine. Another way is to turn over the engine by hand, using a breaker bar on the harmonic balancer (though I don't know how easy it is for you to do that)
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