There was a time that when you bought a new truck, that a owners manual was included in the glove box of your vehicle. None of this modern go to this link online or insert this CD. These owners manual showed all the basics of how to use your trucks features and options, explained your maintenance schedules, where your fuses were and what each one controls, and also things like how to use the spare tire and jack in the event you were roadside with a flat.
30 years later, many of these books are now missing from the glove box or so badly damaged, they have become hard to read.
With thanks to Mopar Authentic Restoration allowing these to be reprinted, these manuals are now available again. These are reproduced right down to all the original information and Chrysler logos.
Please note for 1989, there was two owners manuals: One that all trucks got, and a second for diesel only trucks. This manual is the one all trucks got. For all information on your 1989 Cummins trucks, you will also need to order the 1989 Diesel Supplement.