Make an Inquiry

* Indicates a required field

By submitting your contact information, you consent to be contacted by telephone about purchasing a vehicle or obtaining vehicle financing. Clicking on the Submit button above is your electronic signature.


Sierra Motors Inc

510 E Norris Dr
Directions Ottawa, IL 61350-2317

  • CONTACT US: 815-431-6081


  • Monday 08:30AM - 07:00PM
  • Tuesday 08:30AM - 07:00PM
  • Wednesday 08:30AM - 07:00PM
  • Thursday 08:30AM - 07:00PM
  • Friday 08:30AM - 07:00PM
  • Saturday 08:30AM - 05:00PM
  • Sunday Closed

Q: What is HVAC?

A: HVAC stands for "heating, ventilating, and air conditioning." It refers to the system in your vehicle that heats and cools, as well as the defroster. You should perform regular inspections on the HVAC system as specified by the manufacturer.


Q: How often should I replace the belts and hoses in the engine?

A: Because the quality of belts and hoses cannot be assessed through an inspection, it is recommended that they be replaced every four years no matter what. Between replacements, check hoses for any leaks, cracks, or age hardening.


Q: What goes into the brake system?

A: Brakes are a lot more than just the pedal. Fluid, pads, lines, discs, shoes, calipers, rotors, sensors, and a master cylinder are all part of the system and each is just as crucial as the last. Make sure to have your brakes inspected every 3 months, and keep an ear out for the sound of grinding or squealing -- an indicator that the pads have worn down.


Q: What is antifreeze?

A: Antifreeze, or coolant, keeps your car at a steady temperature and prevents the engine of your vehicle from overheating or freezing. Antifreeze should be changed according to the manufacturer's recommended maintenance schedule, though you should also regularly inspect your radiator and check for leaks.


Q: What should I do if my check engine light comes on?

A: Driving a vehicle with a lit check engine light could potentially cause damage to the engine. Have maintenance done as soon as possible.


Q: What does the exhaust system do?

A: The exhaust system is connected to the engine and helps by reducing noise and filtering by-products that could be harmful to the environment. If your vehicle sounds louder or begins to make a rumbling noise while running, your exhaust system could be leaking.


Q: When should I change my oil?

A: It is recommended that you change your oil and filter every 3,000 to 7,000 miles, depending on your manufacturer's recommendations.