Why is the truck hestitating at 20,000 miles? The dash lights up saying,, reduced power and wont go over 40 miles an hour..
reduced power on 2007 Isuzu i290 Pickup
It could be so many things, the mileage is very low you would not expect a problem. A scan tool is needed to retrieve trouble codes from the computer in your car the codes look like P0420 or P2134, these codes indicate where the problem may be and give a place to start diagnostic tests to isolate the problem. If the check engine light is on first place to start is plugging in a scan tool and see what codes are stored.