Popular questions

Question
My car sputters when cold but idles smoothly after warmup - 2003 Chevrolet Express 3500
Hi there. Beyond the MAF sensor, in most cases, an engine that stumbles when it's cold is caused by one of three different components: clogged fuel injectors, a dirty throttle body, or an EGR valve that is damaged or also...
Question
Rough idle when in drive..but idle is fine when in nuetral or park
Hi there. Check for vacuum leaks on the engine. A small leak will cause the engine to stumble when the rpm's are low, like in gear on automatic transmissions. Look around the intake manifold for the gaskets being broken. Check...
Question
Oil cap is milky, but the dipstick isn't and the coolant isn't bubbling. Please advise.
The discoloration likely represents the effects of entrained moisture in the oil on the cap surface. There can normally be a certain amount of condensation in an engine, for example as weather conditions change or if the engine sits for...
Question
How do I display the miles to empty feature?
There is a Base Message Center that logs the functions of your vehicle. You can use this message center to display your vehicle's information and features. The Miles to Empty feature will tell you how long it will be before...
Question
Air blows out of oil cap when car running
Hello. From my experience most motors will blow air from the oil filler cap due to the pressure generated in the crankcase from all of the moving components. If the air blowing out seems excessive, smells like fuel, or is...
Question
Car turns off. First it would turn off in reverse and when I would stop at a red light or slow down to make a turn.
Hi there. For the reverse stalling condition, check the Idle Air Control Valve and see if its plugged up. If a IAC valve is plugged up, an engine will stall out when going into gear and could cause issues when...
Question
My car is overheating. I have to run the heater to keep the temperature gauge on the half mark.
Hi - there are a couple of possibilities for your overheating situation. The thermostat may not be opening properly, preventing hot water from circulating to and cooling in the radiator. The water pump may be failing and can't circulate enough...
Question
The check engine light and vsa light are on.
The vsa light means that the Vehicle Stability Control or Traction Control has been activated. If the engine light is on and the vsa light is on, then there could be an issue with the traction control system. Check all...
Question
How do I change the Trip A or Trip B reset trigger?
Your vehicle has two trip settings, which measure how far you have driven since the last reset. Each trip meter can be programmed to reset when you refuel, when you turn the vehicle off, or when you manually reset. To...
Question
My tail lights stay on even after car is off. The hazard lights and turning signals all work but the brake lights do not.
If the tail lights are illuminated even after you have used the on-off switch to command them off, that means the switch supplying power is fused shut and/or the circuit is being powered when it is not supposed to be...
Question
Shuddering shaking from take off through 1st and 2nd gear. What can cause this? I just bought the car and I'm scared I was ripped.
This is often a sign of low transmission fluid or a faulty transmission control solenoid. As you know, automatic transmissions use pressurized hydraulic fluid to change gears. Every time a gear change is required, the car's computer activates a transmission...
Question
Why is my oil gage stuck at 80 psi whenever my truck is on?
This is a common sign of a failing oil pressure sensor. This is a small unit in the engine block that reads oil pressure inside the motor and relays this information to the vehicle's computer as well as the oil...
Question
When I turn the switch to use a turn signal, a buzzing sound starts and it may blink once every 8-10 seconds
Odds are you have a faulty signal/hazard flasher relay. Although the relay is an electrical component, the internals are basically mechanical. The relay does just what the name implies. It relays power and the signal from the signal switch to...
Question
My car is idling at 500 rpms is that normal? It's sounds like it's about to shut off but it doesn't
Hello. A low idle can be caused by a few different things. Before doing anything, I'd start by checking the computer for codes. This would tell me if the computer is seeing anything that is not correct. If there are...
Question
Where is the body control module located on my car?
The BCM or body control module will be located under the dashboard on the driver side towards the center of the vehicle. Look to the right of the steering column towards the firewall. It will be a small black rectangle....
Question
High beams come on whenever I use my right turn signal 2008 Pontiac Grand Prix
The problem is caused by a short in the turn signal switch. Replace the turn signal switch.
Question
What does the Overdrive Cancel and Grade Assist light mean on the dash?
If your car is equipped with it, the Overdrive Cancel and Grade Assist system is designed to help with driving on steep grades and in other treacherous conditions. If the light is on in your dash, it means that the...
Question
Transmission will not go into gear when warmed up
Hello. From what you describe it would appear that your vehicle may be experiencing some sort of potentially serious transmission issue. If the transmission was having issues prior to mixing in the additive it may be possible that doing so...
Question
Wheel lights on my truck. Are they legal or illegal to have?
The law states that lights are to be stationary on a vehicle unless they are for a purpose vehicle with a strobe light, like a tow truck. Also the law states that the lights cannot create a distraction to the...
Question
Metal shavings on variable timing solenoid
Hi there. Finding metal shavings on the tip of your VVT solenoid is indeed not a good thing. The reason why it's not a good indicator is that the VVT solenoid is usually attached next to the cam shaft. However,...
Question
How do I use the Digital Speedometer feature in the driver information center (DIC)?
The Digital Speedometer feature in the driver information center (DIC) allows the speedometer to be displayed in digital format through the DIC. To view the Digital Speedometer, press the MENU button until the DIC displays Trip/Fuel Information Menu, then use...
Question
Check Engine Light on again after thermostat replacement.
If the check engine light is coming on and a code like P1217 is in the computer then the computer is seeing an overheat conditions from the coolant sensor telling it your engine is overheating. This can be caused by...
Question
My car A/C won't shut off, even when the car is off !
You may have shorted out the A/C blower resistor that controls the blower speeds. This component is supplied power all the time and only the switch controls the motor speed. If the resistor terminals where the resistors are touched together...
Question
How do you turn on 'horn beep' feature when using the remote in 2017 corolla
Try to hold down the lock button for 5 seconds and while holding it down also press the panic button once. Try this and see if it does the trick? If not then look in the owners manual for remote...
Question
Car is overheating when I drive but not when I idle. It will overheat then drop back to normal
The heater not working in some cases may be related to the overheating problem you are also having. This may be due to a faulty heater blower motor or potentially a bad heater core. As you may know, the heater...