When I am cruising at highway speeds I notice the tach bouncing slight 300 to 500 rpm up and down. Every so often there will be a low pitch rumble that will last for a few seconds with no real rhyme or reason. I cannot feel it in the accelerator or seat, it just kind of resonates through out the cab. It will stop after a few seconds or after i either let off or increase he accelerator. It also hesitates going up inclines at low speeds.
No tranny codes, had transfer case serviced, replaced rear shocks, and tune up done- no improvement
151,000 miles on vehicle
No tranny codes, had transfer case serviced, replaced rear shocks, and tune up done- no improvement
151,000 miles on vehicle