249.1653 319.5779 l 248.5984 265.6062 l 1 j / _ o O / / O / _ o / o / / O ? [(Additional) Any suggestions /O __ _?/ ? 303.307 571.4078 m Up 100 rpms or so then back down when vibration stops again. -1140 (19-NA-136)]TJ -253 (may) 303.307 319.011 l o ? /F0 1 Tf ? ?? 303.307 455.1874 m 194.9669 372.9826 l B* GMC Sierra 2500HD (1) GMC Sierra 3500HD (1) Chevrolet Colorado (1) Chevrolet Silverado 1500 (1) Ram 1500 (1) . Due to the failure, the defroster/defogger system was inoperable. -247 (may) / _ / O / _ O ? 45.3543 483.1937 m /F0 1 Tf When you have some $$ ask your best local transmission shop to have a look. 45.3543 318.0472 l o ? /o/ _ ?? ? 303.307 556.611 m ? 194.9669 527.811 l [(Sierra) 85.8897 458.4188 l -249 (for) ? 200.1259 686.1543 m -247 (\(RPOs\)) /F2 1 Tf 560.6929 686.1543 l 561.2598 533.3669 l /Producer (Arbortext Advanced Print Publisher 9.1.550/W Unicode) _ _ ? -244 (Noise) ? / ? /ProcSet [/PDF /Text /ImageB] -254 (vehicles) o ? -246 (to) o ? -239 (during) -243 (NQF) 249.1653 527.811 l 194.9669 387.6661 l 8.523 8.734 TD -244 (1500)]TJ 168.6614 416.3527 l ? -249 (picoscope) / _ / O / ? 168.0944 458.4188 m B* _ ? 194.9669 556.611 l /Height 506 302.7401 387.0992 m 194.4 265.6062 l B* stream -247 (also) It seems to happen when Im just giving enough gas to maintain speed. _ o ? 86.4566 458.4188 m 200.1259 190.6582 l / / ? 194.4 265.6062 l -0.959 -1.3746 TD ? GMC Silverado/ Sierra 8 CYL. ? ?? 2023 GMC Sierra 1500 AT4 10-Speed Automatic, 4WD, Jet Black With Kalahari Accents Leather, 10-Way Power Driver Seat Adjuster w/Lumbar, 10-Way Power Passenger Seat Adjuster w/Lumbar, 120-Volt Bed Mounted Power Outlet, 120-Volt Instrument Panel Power Outlet, 18" x 8.5" Machined Aluminum Wheels, 2 Charge/Data USB Ports Inside Center Console, 2 . B* ? 561.2598 227.7354 m /F0 1 Tf [(2019) 45.3543 220.6488 m 200.1259 205.3417 l 560.6929 220.0818 l 140,000. miles. 561.2598 686.1543 l 249.1653 343.0488 l _ / ? 22.6866 -0.8283 TD 475.5968 251.4897 l _ ? -327 (LLC.) ? ? ? 560.6929 302.6834 l _ _ _ ? ? /F1 1 Tf -0.959 -1.3682 TD 0 0 0 1 k / ? Hello! ? -4509 (Escalade) -244 (4HI) The Fora platform includes forum software by XenForo. 249.1653 556.611 l 0.0099 Tc 248.5984 441.0708 l -241 (description) Do some general internet searches and read up on your transmission - its probably a 4L60E. -247 (Time)]TJ 248.5984 402.4062 l ? >> B* O? 561.2598 205.3417 m B* -244 (7\)) Subject: Howling, Whining/Whirring, Shudder/Vibration, and/or Grinding Noise While in 4HI, 4HI Auto and/or During Parking Lot Maneuvers in Auto Mode Brand: Model: Model Year: VIN: Engine: Transmission: from to from to Cadillac Escalade 2015 2019 Chevrolet Colorado 2015 2021 Silverado 2014 2018 Silverado 1500 (New Model - 12th VIN Digit = 7 . O ? 431.7165 302.6834 l ?O // _/ /_ / // / /o o o / ??