Engine Mechanical problem
2003 Chevy Silverado V8 Four Wheel Drive Automatic 80,000 miles
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Truck has low ideling and a tendency to stall when braking and turning, Engine idle fluctuates when AC is used.

have you had anything done to it recently. is it setting a check engine light. could be a possible vacuum line loose. a bad MAF sensor

Get you some intake and throttle body cleaner and a baby bottle brush and take off the air intake and clean out the carbon build up works great my 03 was doing the exact same thing i changed the alternator and battery and still the same thing. $230 later i pick up the $3 bottle of cleaner and it did the trick live and learn