

Combined with service from your local GM dealer, this information will help you get the most from your GM vehicle.
Combined with service from your local GM dealer, this information will help you get the most from your GM vehicle.
In a perfect world, your car would perform smoothly all the time. You'd never have to jump-start a battery or change a tire or ever get your hands dirty. But unfortunately there are times when it's necessary to take matters into your own hands. Here are some ways to perform those duties as safely as possible.
Although you should familiarize yourself with the steps outlined in your owner's manual, here are some standard rules.
Keeping your GM vehicle maintained is less costly than a major repair. Small problems only become bigger when they are left unattended and can lead to expensive towing charges, repair bills and poor performance. To maintain your car, you should always follow your owner's manual instructions, as it is full of information that applies directly to your vehicle. For your convenience, however, here is a universal maintenance schedule that you might find additionally helpful.
Check your oil, water, wiper fluid, engine coolant/antifreeze level and tire condition and pressure.
Inspect transmission fluid and brake fluid, windshield wiper blades and power steering fluid. Review condition of belts, hoses and battery cables.
Check the brake system and inspect and/or rotate tires. Review condition of clutch system (manual transmissions) and chassis lubrication.
Have underbody flushing performed and service engine cooling system (which should include inspecting the radiator, water pump, fan belt, thermostat(s), radiator cap and antifreeze). Check accelerator control system, and lubricate doors, locks, hinges and parking brake.
Inspect automatic transmission. Change auto transmission fluid and filter.
Change spark plugs and fuel filter, inspect spark plug wire, check engine timing.
This schedule is a sample of the maintenance inspections and services required for many cars and trucks. It is not meant to replace the schedule provided in your owner's manual. Always refer to your owner's manual to achieve the best performance from your vehicle.
Note: In some cases, automakers do not advise tire rotation. Check your manual to find out when wheel alignment and wheel balancing are necessary.
When your car is acting up or breaks down, the last thing you need is a communication breakdown with your technician. Learn how to describe certain sounds with Lesson in sounds: Around the vehicle or Lesson in sounds: Under the hood. Get an idea of what the leak spots on your driveway might mean in Lesson in liquids. Then, the next time you make a trip to the repair shop, you and your technician will be talking the same language.
Lesson in sounds around the vehicle | |
|---|---|
If you hear
| It could be this
|
Squeaky brakes | Dirt in the lining of the pads or hardening of the pads and shoes |
Grinding brakes | Worn pads and shoes |
Metal on metal when braking | Worn-out pads |
Metal on metal when encountering bumps | Worn-out shocks |
Growling from air conditioner | Worn compressor |
Squealing windshield wipers | Worn wiper blades |
Whining from tires when turning a corner | Dry or worn-out wheel bearings |
Squealing from tires when turning a corner | Tires low on air or worn |
Lesson in sounds under the hood | |
If you hear | It could be this |
Squeaky brakes | Dirt in the lining of the pads or hardening of the pads and shoes |
Grinding while shifting gears | Worn clutch or clutch that needs adjustment |
Screeching under the hood | Loose or worn belt |
Popping from engine | Dirty air filter, bad spark wires |
Scraping or buzzing from transmission | Transmission needs new fluid |
Squeaking noise when shifting | Manual transmission needs lubrication |
Clunking under hood when gears change | Worn joints or engine's idle speed may be set too high |
Knocking under hood | Need lower gas octane rating, clogged air filter or timing off |
Clicking when idling | Needs oil |
Clunking that worsens as speed increases | Broken or worn engine parts |
Lesson in liquids | |
If you see
| It could be this
|
Black fluid | Motor oil leak |
Red-colored spots on your driveway | Transmission leak |
Yellow, green or orange stains | Coolant/antifreeze leak |
Clear liquid with no smell | Just dripping water that has condensed on your air conditioner |
Clear liquid with smell | Brake fluid leak |
Greasy fluid that is pink, red or clear | Power steering or tranmission leak |
Most drivers feel shaky even after a minor collision. Knowing how to handle the problems that you may encounter can save headaches — from the scene of the accident all the way to the body shop.
The number one error drivers make after being in a collision is not obtaining enough information from the other party before leaving the accident site. For example, what if the other party is driving a car that he or she has borrowed and does not own? You need to have the insurance information on the car that is involved in the crash, not the driver's own car. Below is a list of information one needs to exchange after an accident. We suggest keeping it in your glove box, along with a pen.
You are required to call the police if one or more parties are injured, if a vehicle has to be towed or if the damage is more than $500 on your vehicles collectively. However, it is recommend that you always call the police, as a police report can verify what actually happened. Without a police report, the other parties involved could change their stories.
The other driver may ask you not to report the accident and offer to pay for your damages. If the damage looks like it is under $500, you might consider accepting the other driver's offer, but doing so is risky. You have no assurance that the person will actually send you a check to cover your damages.
Usually, the reason people don't want an accident reported is higher insurance rates. However, the police agency that handles the accident usually does not notify the insurance agency, as one of the involved parties frequently does it. So, go ahead and file a police report. It is important for your protection.
After the police report is made, you should notify your insurance company. (Most insurance companies require a police report prior to making a claim.) Illinois law, for example, mandates personal injury accidents to be reported within 48 hours and property damage accidents over $500 within 10 days. (If there is visible damage on a vehicle, most likely the repair cost will be over $500. If you are unsure, obtain an estimate and report it before your state's deadline.) Remember to check the laws in your state.
If you're replacing parts on your vehicle, know that there are significant differences between genuine GM parts and imitation, used or salvaged parts. The quality of fit, finish and corrosion protection can be great. These differences can negatively affect a vehicle's warranty, safety and resale value.
Our experience indicates that most body shops would rather use genuine GM parts because they fit right the first time and help maintain the long-term integrity of the vehicle's appearance and long-term investment return.
This Technical Tips section has been created with you in mind. It is an example of our desire to enhance the existing dialogue on technical issues that will aid in lowering your fleet maintenance and repair expenses. General Motors has a team of highly experienced service professionals who are committed to helping you manage your fleet at the highest level of efficiency.
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