Rough Idle

[taxman82]

I have a 99 suburban 5.7 with about 54000 miles. When it warms up the engine will idle rough both in gear and in park. Doesn't turn on the SES light and runs great down the road. I have done a full tune up plugs, cap, rotor, and fuel filter.

dirty injectors?
fuel pump going bad?

Any response is appreciated.

Thanks

[bad68chev]

Might want to check your motor mounts, broken motor mount can make vehicle feel as if engine is idling rough.