Assuming you mean consumer trucks and not big rigs, you can find lots of information in the online version of Truck Trend magazine: http://www.trucktrend.com/index.html
One can find information on new Nissan cars and trucks by visiting the Nissan company website. The website allows you to check out the prices and specs. of each vehicle.
A good place to find information regarding gas mileage for 2013 trucks would be online at www.fueleconomy.gov. You can also use other sites such as www.intellichoice.com and www.consumerreports.org
Some of the late model trucks do not have a drain.If your truck has one,it will be on the drivers side on the bottom.If you find o hole with no drain,then you dont have one.
Www.utoGuide.com has a list of the top ten most fuel efficient pickup trucks for 2013. Www.shopautoweek.com also has a list of its top four most fuel efficient pickup trucks.
Warranty information for all Chevrolet vehicles can be found at your local Chevrolet dealer. Information can be also found on the official Chevrolet website.
AnswerIn your engine compartment you should find a white sticker with black type. On it you will find engine RPM's, and a list of specs. Included should be your plug gap.the correct sparkplug gap is 60 thousands.
Consumers find car ratings in Consumer Reports. Reviews are available for New Car Preview 2013, New Car Ratings & Review 2013, Best & Worst New Cars 2013, Best Cars, SUVs & Trucks.
Depending on the types of trucks you are looking for, you can find trucks at http://www.penskeusedtrucks.com/. You can also find trucks at http://www.buyatruck.net/
You can find lifted Chevy trucks online at the Only Lifted Trucks website. Alternatively, you can also find these trucks from auction websites such as eBay and classifieds such as Craigslist.
One can find military trucks for sale on site such as eBay. One can also find military trucks for sale on Military Trucks, TNJ Murray and many other places.
You can find list of food trucks in LA on the following websites; yelp, Find LA Food Trucks, Ranker, Food Trucks Map, and Los Angeles Travel on About website.