I have a 1999 GMC Savana van, what general purpose tools should I have on the road with me when I travel? What are common points of failure? What kind of stuff should I not attempt to fix myself aside from the transmission? I really appreciate you offering to share your knowledge, it is really helpful to hear stuff from an expert that isn't trying to sell me something.
Oh, one more thing, I have about 100,000 miles. I don't have previous service records, should I change out the timing belt soon?
Howdy! Good question!
First, you'll want to have a way to change out a tire, and have a spare tire for when you need it. You can get a T-handle wrench with 4 different sizes in 1 tool, or since you only need 1 Size for your lug nuts, save weight and get a breaker bar and socket. You'll need a jack to raise vehicle too, but your van should have one of those. If not, get a small scissor jack or bottle jack. I usually carry a piece of 2x4 also, to give myself a "foot print" for if I need to jack up vehicle in sand or gravel or dirt. Being prepared to change your own flat tire is going to save you at least $150 tow bill. A tire plug kit is good item to have in a pinch also.
Next would be jumper cables. A jump pack is ideal, but they are big and costly, not needed. Small jump packs are becoming available, but they are pricey. Nice to have though. Even if you have a jump pack, you'll want cables for when the pack is dead and you didn't know it was dead. I personally also carry around an 80w solar panel to recharge a dead battery.
As far as tools go, I carry full set of wrenches, standard and metric. Not needed for 1 vehicle, but I find myself working on other cars besides my own on the road. A set of 3/8" drive sockets and ratchet will be handy. Get the 6 point kind vs. 12 point. I find the 12 point sockets strip slightly rusty bolt head too easily.
Some brake calipers require Torx or hex drive bits to removed and install new pads.
Other basic hand tools I don't travel without are pliers (2 or 3 styles) a hammer, pry bar, big pair of channel lock pliers also, for pushing caliper pistons back in when installing new brake pads. A few different size screw drivers are good to have.
Solid Metal wire is a good temp fix item to have on board, as well as electrical tape and some wire nuts. Have a couple extra fuses of assorted sizes, make sure you know what fuses your van takes before buying some. There are 3-4 main styles.
*This is all pretty general stuff to have, I encourage everyone to become familiar with their vehicle to know exactly what tools to have to preform basic fixes on the road.
Everyone is different in their ability to repair shit on the road, and the more you feel confident in doing, the more tools you'll want to have.
*Your specific van (99 gmc) does not run a timing belt, so no worries there. I would however do a transmission fluid drain and fill. Do not flush. Can remove the pan and change filter too if you want, good idea. Other areas of common failure are chassis parts; tie rod ends, ball joints, etc. These things can be difficult to change on side of road, but possible. Starters, alternators, batteries, drive belts, brakes, even water pumps can all be fixed on side of road. These are things you'll want tools for. Also, like most of us, we tend to put alot of stuff/weight inside vans, well because they hold alot! New shocks on all 4 Conners are a night and day difference when driving. If you've loaded the van up good, I recommend new shocks.
Hope this helped! Good luck and safe travels!