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Cobalt

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Question
Car won't turn on
Hello, thank you for writing in. I am sorry to hear about your situation! The very first thing to do is check the owner's manual for any information about the anti-theft system (if you have not already done so). If...
Question
My car is making a rattling noise and it's on the passenger side. It improved slightly with adding oil. Could it be timing chain?
Hello, thank you for writing in. The rattling noise may be the timing belt. If the timing belt was broken, the vehicle would not run. If it is damaged or loose, there is no way of telling how long it...
Question
07 Cobalt ignition was replaced on a recall. Now it won't start.
The very first thing to do is ensure that you have a usable battery. The battery should be fully charged and then load tested. If the battery passes a load test be sure it is NOT a marginal pass in...
Question
Lights
Fluctuations in lighting output can be due to a bad alternator, loose alternator drive belt, wiring faults in the lighting circuit including bad grounds and a weak battery. I recommend you have the battery load tested and, at the same...
Question
Hole in radiator, leaking
Any leaks in a cooling system, including those in a radiator, can be repaired by requesting YourMechanic's mobile diagnostic and repair services. So, you need not move the vehicle. If you would like the radiator replacement performed by a certified...
Question
How to power subwoofer's to the battery?
Hi there. When routing the wiring to the engine compartment, you will need to drill a hole in the firewall under the dashboard to send the wires to the battery in the engine compartment. The subwoofer (amplifier) should have a...
Question
is glow in the dark paint legal in wv
The best place to find this information would be at your local Department of Motor Vehicles. They can give you information on any laws related to automobiles in your state. You are wise to look into the legality of this...
Question
I put a engine out of a 2007 malibu in the 2005 cobolt. Why will the engine not start
Hi there. Check all of the sensors to the engine and make sure that all of them are connected. Check the computer and see if there is an wires disconnected to it. A loose wire on any electrical system will...
Question
I took the engine out of a 2007 malibu and put it into a 2005 cobolt and now it won't start.
Hi there. Check all of the sensors to the engine and make sure that all of them are connected. Check the computer and see if there is an wires disconnected to it. A loose wire or a sensor to the...
Question
Popping sound while idling.
Hi there. One or more of the drive belt pulleys may be bent causing the engine to have erratic rpm's when at idle and causing the engine to stall out at times. Open the hood with the engine running and...
Question
car won't start
Hi There, This may be related to many different possibilities, some of which may be related to a lack of spark or possibly timing issues and some of which may be related to a fuel delivery problem or a combination...
Question
Last night I was driving home and I heard this knocking noise, a minute later the noise went away and my check engine light came on.
Hi there. The noise you heard could have been the engine knocking due to a lack of engine oil. If the brake pedal is pressed and the oil light comes on, then the oil level could be low causing the...
Question
2010 Chevy Cobalt shuts off while driving
The power relay provides power to several vital fuses. The relay is turned on and off by an on board control module. A problem with this relay or any part of its control circuit, can result in a vehicle that...
Question
cant get into reverse while car is on.
If you are having to bleed the clutch hydraulic circuit repeatedly, you should have that inspected and repaired. Obviously, there is a leak that is admitting air. Once the clutch is functioning, the gear shift issue would be evaluated, if...
Question
Gauges not working and car not shifting
Hello, and thank you for writing in. There are a few sensors that can effect both of these systems. The first one you should check is the transmission output speed sensor. You may also want to check the other speed...
Question
Headlights lo beam won't work
In all likelihood, the combination switch is at fault. There may be a broken connection inside of it. This is not an uncommon problem. Sometimes it can effect the high beams and not the low beams, or vice versa. Sometimes...
Question
Anti theft system needs reset
Follow this Pass-Lock relearn procedure. If it does not work, the ignition lock may need to be replaced if it was damaged. The Pass-Lock family has two basic relearn procedures—a ten-minute procedure and a thirty-minute procedure—and which one you use...
Question
My car been leaking gas my tank is on my passenger side but gas leaking on my driver side
Leaking gasoline is a fire/explosion hazard so be sure to have this leak repaired at your earliest convenience. In the meantime, be sure not to park in a confined space, such as a garage, because gasoline vapors could accumulate and...
Question
Keeps throwing main fuel pump circuit code.
Check the fuel pump relay and see if its getting hot. A faulty fuel pump relay will throw a fuel pump circuit code if the relay gets too hot. If there is a code for the camshaft actuator, then there...
Question
I'm having trouble replacing the cv axle. Do I need to replace the rings around the spline that goes into the transmission?
The rings you are pointing to in the video are actually the retaining rings. Unless they are broken, they really shouldn't need to be replaced. The ring on the male part of the splined shaft should pop into a groove...

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