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HELP!!! I'm having problems with my 99 yukon when I start my truck all the lights on the switches light up then go out the service 4wd light is lit up so I figured that it was the tccm got one from the local wrecker and replaced it with no results now I was going to try and replace the the...

Well I have 99 Yukon with 126k on it and the motor finally blew up the body is still in great shape so I decided to put another engine in it.While doing the motor swap I had noticed writing on the side of the oil pan and on the back of the block which is leading me to belive that it was a...

Hello all, Here we go again my 99 yukon has been giving me problems starting for a while.Now it won't start at all it just cranks and it has spark and fuel pressure at first when it would give me problems I would jump it and it would always start which diddn't make sense because the battery was...

Hello All, Here is my story I have a 99 Yukon with a 5.7l and over the summer it felt like it started to misfire ,the plugs were fairly new so I changed the cap,rotor and wires that seem to take care of it. Then about a month ago it was giving me trouble starting so I changed the plugs that...