1999 GMC Yukon hard start

Asked by Nov 14, 2019 at 11:52 AM about the 1999 GMC Yukon SLT 4WD

Question type: Maintenance & Repair

Okay this may be odd but i have no idea what else
to do. I have a 1999 GMC Yukon, after sitting all
night i can go out in the morning and it’ll fire right
up and runs great. If i cut it off then try to start it
shortly after its very hard to start, but if i let it sit for
a few hours it’ll crank up just fine. I’ve replaced all
spark plugs and wires, had oil changed and pretty
much a full tune up. Anyone have the same
problem or and suggestions ?

2 Answers


weak battery have it checked


Leaking injector... dumps fuel when it sits after it sits the gas dissipates When its hard starting does it help to hold it WOT to start?

Your Answer:

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