Popular questions

Question
My engine is shaking and check engine light blinking
Hi There, Shaking or vibrating may be caused by many different things such as faulty spark plugs, poor fuel pressure or misfires. Other things such as a faulty idle air control valve may cause the engine idle to drop below...
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Alarm system won't turn off
If the alarm system will not turn off, and the car will not start, I would first try unlocking the driver side door manually with the key, and if it has a remote, checking to see that the remote's battery...
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Fuel pump engages. Batery good, alternator good volts, jump start helps when wont start. Temp does not matter. Intermittent?
Hello. Thank you for writing in. There are several reasons your vehicle may only start when jump starting. The first and most common is a build up of resistance that is causing you to need a boost of voltage to...
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Transmission leak
Hi. Automatic transmissions operate using hydraulic pressure. Without the proper fluid level, the transmission can't build pressure and won't operate properly. Locating and fixing the transmission leak may solve your problem. Have a technician inspect the transmission leak and repair...
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Rear door not closing correctly
Hello. Assuming that the light control switch in the front is properly set, and you have followed the instructions in the owners manual, then the problem is likely the light switch in the door jam. This is a relatively common...
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Car using fuel quickly
The car using more fuel can be due to a problem with an engine sensor, such as the mass air flow sensor giving incorrect air flow readings to the computer, or you may just have a clogged air filter. If...
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How do I accelerate when using cruise control?
If you are using the cruise control system, but need to accelerate, you can do so without canceling the cruise control. The cruise control will be canceled if you use the brake pedal, but not if you use the gas...
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Car idling erratically
Hello. The erratic idling could be caused by several things: You could have a bad mass air flow sensor, the throttle position sensor could be bad, or the idle air control valve could be bad. This could also be an...
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Doors not responding to key fob
Hello. GM has a very lengthy technical service bulletin about this concern. The reference # is PIE0059, release date 03-19-10. They had an engineer look into the issue and it seems to me they had some low quality door latches....
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Window not working
If the motor does make a noise when the Down button is pressed, then the motor is not the cause; either the regulator is binding the motor from turning the window up, or the switch needs to be replaced at...
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The door latch mechanism seems to be broken and will not allow the door to open. How do I open the door to replace it?
Hi! You can access the lock mechanism by removing the inner door panel. This should allow you to open the door. This may be difficult to do! If you are looking for some extra help, a certified technician from YourMechanic...
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Crankshaft broken
The crankshaft is a very important component in the motor and is balanced very precisely. If the crankshaft were to lose its balance for some reason, major engine damage would occur. This would also cause all of the main and...
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Air conditioning has slow leak
There is specialized equipment for finding leaks in AC systems. One way is to add a fluorescent dye the the system, run the system, and check for a leak with a black light. There are also electronic tools to detect...
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Oil pressure low in truck
The knocking noise is the piston rod bearings or the crankshaft main bearings. A failure of either of these will create a drop in oil pressure along with the knock. This internal engine failure will only get worse and will...
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Lights staying on
Hi. You don't specify which lights are stuck on, so I'm going to assume you're talking about the headlights. The problem could be the headlight switch, a stuck closed relay, a short in the circuit or a problem with the...
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What does the 4x2 Light mean?
The 4x2 Light indicates the performance of the two-wheel drive high feature. The driver selects when this feature is on. To understand the 4x2 Light. The 4x2 Light will illuminate briefly when the two-wheel drive high feature is enabled....
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Cylinder misfires
Sometimes an ignition coil failure may be due to outlying causes like oil on plug wires or plugs with too large of a gap. If the coil has to work too hard to jump the gap, the spark plugs can...
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The tire sems unsteady during driving
It is possible that you have a wheel bearing with some play or a loose tie rod or ball joint. Any suspension part that has a joint on it can have play and cause the wheel to wobble and make...
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Check Engine light came on
An illuminated Check Engine Light can be caused by many different issues on a vehicle that is 15 years old; it could be anything from a gas cap, to a bad sensor. I recommend hiring a mechanic, such as one...
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Battery light on
Hello. The battery light turning on when the engine is running indicates that system voltage is low. Everything required to run the engine, and everything in the car, will drain the battery. Most likely, it is the alternator, but the...
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Over heating
This can be caused by a number of things such as low coolant levels, a faulty thermostat, or a failing coolant fan switch. As you may know the coolant fan switch helps to maintain the proper coolant temperature by turning...
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Vehicle leaking after repair
Hi, what color is the fluid? Engine oil will be brown or black depending on how old it is. Transmission fluid can be red or brown and thick. Coolant tends to be yellow or green and will feel similar to...
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Dealer where I purchased the vehicle stated my rotors were "all rotted" at my last service. Quote - $375.00 per axle? High?
Hello. 'Rotted' is an unusual term for brake rotor problems, but here we are. With your mileage, especially if you have lots of stop-and-go driving, brake service may be required. Dealers have a fairly high cost structure (building, test equipment,...
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Door not opening
If neither the inner or outer door handle will open the door then it is most likely a faulty latch that should be replaced. This can be a difficult repair, as access to the latch will be tricky since the...