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How can I tell if the fuel injector is bad or if it is just the o-rings that need to be replaced, without taking them out to check?
Hi and thanks for writing in. When it comes to determining what part to get, first you need to know what each part does. The O-ring on a fuel injector serves two purposes. The o-ring seals the injector from leaking...
My car is still dying out after replacing the alternator and battery
Remove the negative battery cable from the battery. Get a digital meter and check the voltage from the battery terminal and the battery cable without having the cable touching the terminal. If there is something on in the vehicle with...
It runs for a hour or so, once it's parked it won't start back.
There is a GM problem report for the Pontiac G6 with this issue that identifies a loose, or corroded connector for the primary high-speed communication "bus" for the engine, transmission and other components (known as the CAN bus). Check with...
My low beam headlights will not work how can I fix this?
Hi there, thanks for writing in. If the headlamps are not coming on at all, then you may have an issue with the control circuit. The controls for these lights come from the body control module. It is common for...
Hazard lights don't work, but the turn signals flash normally
The hazard and turn signals are controlled by the body control module on this vehicle. You will need to have the body control module circuits monitored by using a scanner that can access the body control module data stream to...
AC not taking coolant
Hey there. You may have a bad A/C compressor if you see the compressor engage but the high and low pressures stay the same. If the high pressure spikes above 300 or more, then the compressor can produce pressure but...
Car will not start even though all the dash functions display. The engine stated and ran until I had a mechanic clear its check en
Hello. The most common cause of this suddenly happening like this is a bad ignition switch. This tends to fail on most GM vehicles and cause this same problem. I would start though by load testing the battery just to...
Will go in reverse not forward what are the choices I have
If the fluid level is correct, and there are still no forward gears, there is most likely a problem inside the transmission. Typically, if it were something outside of the transmission, both the forward and reverse gears would be affected....
Can I drive my car with the rotors warped until I get it fixed next week?
Hi, thanks for your question. There should not be any major concern to drive with them this way assuming it is still drivable other than the vibration and noise as you have experienced. Be sure to give yourself extra time...
Car is leaking antifreeze says low coolant?
This is a sign of a leaking coolant system. This can be caused for a variety of reasons. Many coolants are a green color which may indicate that your coolant is in good condition other than the leak. I would...
My car stalled, I checked the oil and it was low. I added 2 quarts and barely made it 4 blocks. There is no pressure when pressing the gas.
This may or may not be related to the low oil level. If the car was overheated and potentially has developed a blown head gasket, this may be possibly what have caused the stall. When this happens, the cylinder head...
When my car is idling at a stop sign, I have a rattle coming from the front right.
Hi there, thanks for writing in. If the noise is there even when the engine is running, then the balancer needs to be checked as well as the engine mounts. Either one of these will cause this to occur. I...
I need new brake pads, but I think it's the front brakes.
Hi, thanks for writing in. If the brakes are grinding then you may be grinding metal to metal on the brakes. Have all the brakes inspected to see if the pads and rotors need replaced and if the calipers have...
car cranks but wont start. check engine light on. code p0685
The code P0685 indicates a problem with Engine Control Ignition Relay Control Circuit. This may have a poor connection or need to be replaced. I would recommend having an expert from YourMechanic come to your home to diagnose and repair....
I want to know if I'm going to pay to much for a RACK N PINION - SLIGHT LEAK and OIL PAN GASKET, they are asking 1240 dollars is t
This would be considered a fairly normal price for replacing an oil pan gasket and a rack and pinion. Whether or not to replace the rack and pinion or oil pan gasket is up to you. It would depend on...
My TC light is on and I don't know what that means. Got this car 2 weeks ago.
Hi, thanks for writing in. The TC light is the traction control light. This light will come on when the traction control has a malfunction or when it has been deactivated by the switch. Usually the traction control issues are...
Steering column was replaced because of a recall, but it is not working again!!
There are different recalls that may pertain to this vehicle. There are recalls for steering sensors and shafts. You may want to call another local GM dealer and have them run your VIN number to check for open recalls for...
Clunking noises driving at low speeds or over bumps
A clunking noise when hitting bumps can be caused by worn out struts, worn strut mounts, sway bar bushings, steering linkage being worn, or loose components. It would be best to have a certified mechanic actually diagnose the noise. These...
My Pontiac G6 won't crank and wont start
I believe your "no crank" issue is the passlock security system has locked things down because of what it perceived as a "battery swap". If the car restarted after the jump as you indicate, the ECM is probably OK. The...
Thermostat location.
The thermostat is located behind the outlet pipe on the front of the engine just above the water pump and pulley. The hose that hooks to the outlet pipe goes to the surge tank. Looking from the front the outlet...

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