NEED TO KNOW OF KNOWN BULLENTINS? PROBLEMS? GOING ON A LONG TRIP.

Hesitation - can be due to a vacuum leak, an air intake leak, a throttle body that needs cleaned, an EGR system issue, or a fuel pressure issue. The best thing you can do preparing for a long trip is have a qualified technician evaluate the vehicle's condition. This will give you some insight as to what you may need to be prepared for. Technical Service Bulletins help technicians diagnose "common" issues, but are not a listing of issues you can expect to have. My suggestion is to review the vehicle page on RepairPal (http://repairpal.com/cars/gmc/rally+wagon+3500) and look at the common reported information there. It will give you some information that you can maybe use. Checking the vehicle is more important, overall, however. Good luck and safe travels!

great answer by Dave. Autozone have some popular workshop manuals for free on line once you register (for free) on their website http://bit.ly/autozone_repair_info or there is a company that independent auto repair shops "buy" their information from that offer a very reasonable service to do it yourselvers. You can get a one week subscription or year subscription very cheap. The information is year make and model specific repair procedures, service bulletins, component locations, wiring diagrams ect.... great quality information same as the professionals have ,much better than generic workshop manuals from parts stores, much cheaper than the factory manual try http://bit.ly/mitchell_repair_manuals_online and get an online repair manual subscription.