rough idle

[68camaro]

i am frustrated with problem and no one so far has answer . have 99 silverado 2500 with 6.0 and 184,000 miles on it and at idle the motor will surge and some times on acceleration. no light ever comes on . had in many shops with no problem found . can anyboy help me thanks mike

[jethro_3]

So you've checked for vacuum leaks? Can you create any of the conditions to make the idle surge? Other than the surge does the engine have any other problems, even ocasionally?