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1999 GMC Yukon Questions

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Truck died out on my buddy's truck he thought it was because of the distributor changed it out but did not mark it or anything and just dropped it in however it fell timing was obviously off so I set engine on tdc and fixed distributor pointed it to #1 cylinder now truck starts but runs super rough/rich with codes p0108 p0101 and of course p1345 ccannot seem to figure out why? Help!
What could be going on? She is revving by herself, sometimes stalls or won't start and she is running really rough, eating gas. Help
it runs great but didnt pass emisson test
True key to start potion 4x4 lights come on then imedetle turn off
problem just started after I left the rear doors open after unloading
Not getting proper signal from ckp.removed it and found engine oil on magnet.is normal
Trying to remove to replace got in fender bender and have leak needing to remove
When I put yukon in gear forward and reverse it makes noise !put in new transfer case and does it still! !only now have no park or reverse! !!!!what could be the problem? HELP
Water in my oil if intakes cracked can it also get in the cylinders plugs damp 3rd cyl. On drivers side
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