Need Some One Has 07 Yukon Denali Options

[Denali_bug]

hi

My 07 yukon Denali is now in for its sixth major service repair. One of the major issues is the symptom of depressing the gas to modestly accelerate and the engine RPM's ACTUALLY DECREASE!!!! Yes, pressing on the gas causes the engine to slow down. You can hear the motor bog and see the tach drop about 300 to 400 RPM's. To make this TURD move you absolutely have to STOMP on the gas and hope the transmission finds the right gear. My transmission will upshift and downshift rapidly searching for a correct gear to use. Meanwhile, nothing is happening in the speed department.

and all i get get from dealler "your vehicle is operating within normal parameters"

what about yours ?