Hello guys,
I recently purchased a 1997 GMC Suburban 2500 6.5 Turbo Diesel 4x4. Now I’m having transmission problems with the truck, seems to have a delayed and hard shift from 1st to 2nd and 3rd and won’t go into 4th od, tops at 40 mph. Any clues on what might be causing this and what to check first before trying to do a full rebuild. Hope to hear back from y’all, thanks! Truck has 86K miles