95 Tahoe, well maintained with 230,000 + miles. 80% was used to tow a 25 foot + sailboat (original owner). 10% was me hauling cars. The rest was to work and back
Still has the original 4l60e and was NEVER driven in OD. Trans is REAL strong still.
I is the mfg's recommendation to NOT tow in OD. Check your owner's manual or pull down your visor and read the sticker.