What's Wrong With My Car or Truck- Free Auto Help

Here you can find answers to a specific problem you may be having with your car or truck.

Read articles that explain some common causes for problems in the areas listed below.

This list is always being added to, so check back again.



  • Vehicle Won't Start or Engine Noises

    Read articles related to common problems why your car or truck wont start. This section also explains some common engine noises and there possible causes.

  • Brakes Make Noise or Won't Stop Properly

    Descriptions of some common causes for brakes noises and poor braking performance.

  • Steering Problems

    Read about some of the common causes for regular or electric steering problems.

  • Front or Rear Suspension Problems

    Have a suspension problem on your car or truck? Read articles to help diagnose a problem.

  • Warning Light on the Dash. What Does it Mean?

    Today's cars and trucks have many lights that can come on the dash to warn the driver of a problem in a particular system. Many times when multiple lights are on, these can be related to the same problem.

    Computers "TALK" to each other. So, a problem in one system can affect one or more other systems. Sometimes this will cause a system to be dissabled and the warning light to come on, even though that system does not have a probem.

    A good example of this is that a problem in the ABS will usually cause the Traction Control to be dissabled. You may have an indicator that shows "TRAC Off". That does not neccesarily mean there is a fault in the Traction control function.

    Does your car or truck have a warning light or indicator on the dash. Find out what these lights mean, what to do next, possible causes and solutions.

  • Heater and A/C Problems

    Does your air conditioning blow warm? Does the heater stay cold? Is the drivers side dash vent temperature different from the passenger side temperature on A/C or heat? Read these articles.

Latest Articles

2014 Chevy Cruze Diesel for ...

It's been a little over a year and a half since General Motors first confirmed plans to offer a ...

Joe Flacco Wins New Corvette ...

Super Bowl XLVII MVP Takes Home Chevrolet Corvette StingrayPresented by local Chevrolet dealer who ...

New GM recalls 2012 cars over ...

Report Receipt Date: JAN 24, 2013NHTSA Campaign Number: 13V023000Component(s): AIR BAGSVehicle ...

GM Recalls Chevy Express And ...

Summary:General Motors (GM) is recalling certain model year 2013 Chevy Express and GMC ...

How Things Work

Air Bag (SIR) System Function and Operation

The Supplemental Inflatable Restraint (SIR) system supplements the protection offered by the driver and front passenger seat belts. The SIR system deploys an air bag from the center of the steering wheel and from the right side of the instrument panel. The knee bolsters and the steering column absorb crash energy. The driver and passenger knee bolsters are below the instrument panel.


Common Engine Codes

EGR Codes P0400 - P0405

The powertrain control module (PCM) tests the exhaust gas recirculation (EGR) system during deceleration by momentarily commanding the EGR valve to open while monitoring the manifold absolute pressure (MAP) sensor signal. When the EGR valve is opened, the PCM should see a proportional increase in MAP.