Every Buick owner and DIYer worth his or her salt has a Buick repair manual in the garage. That manual is the Bible for doing repairs properly, according to manufacturer's specifications - and even better. The manual contains the collected knowledge of experienced Buick mechanics who have worked on many Park Avenue and Regals in their time. Good manuals like these will show actual tear downs of major systems - the cooling, engine, drive train - with photos and illustrations that clearly indicate where the parts are located, and how they work together. Easy-to-understand instructions accompany the photos to explain in a simple step-by-step manner how to do the most common repairs. Or, if you are a glutton for punishment, you'll need to learn how to completely disassemble and reassemble trickier parts, like a car door panel. Our Buick manuals will help you with specifications that you'll need for doing such jobs like a tune-up, when you replace the spark-plug wires. For that, you'll need to check the Buick repair manual for the specifications of the wires, and to measure the new set of wires with an ohm meter to make sure they meet those specs. You'll need to know the timing order. So, for example, the timing order for a Buick Regal is 1-6-5-4-3-2. Those little details make all the difference when doing a quality DIY job on your car.