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Envoy

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Question
My car is making a clicking noise when I turn. 2002 GMC Envoy
Hello. If the vehicle is four wheel drive then it very well can be an axle that is failing. If the vehicle is two wheel drive then it does not have axles in the front. If that is the case...
Question
I have a problem with my truck vibrating.
If a motor vibrates while in park idling, there is either a balance issue with the motor or an engine mount problem. Locating such problems is not for the faint of heart. There are several techniques that can be done,...
Question
Does the throttle position sensor and thermostat need to be changed before I take a three hour trip?
The code for the thermostat is due to the engine coolant is not getting up to operating temperature quick enough and is due to a stuck open thermostat most likely. The TPS code may be an intermittent issue with sensor...
Question
How Can I Fix The Left Headlight Bcuz It Dosent Light Up When I Turn On The Truck And I Bought A New Light And It Still Didnt Work
One headlight not working can be due to a few causes. First, check the fuses. Some vehicles have an individual fuse for each headlight. For example: Left low beam, right low beam, left high beam, right high beam. If the...
Question
My check engine light is on
A vehicle that has a problem with the engine or power train can turn on the check engine light and set a code in the computer. The list of possible codes and problems are in the hundreds. You will need...
Question
Oil leaks
This suggests you may have a leak resulting from a failing gasket somewhere in your engine. As you know, there are many different places in your motor that are sealed by gaskets. I would suggest narrowing this down by placing...
Question
Why do I have a knocking/grinding sound coming from the front left tire area on my 2007 GMC Envoy
Hello. This can be caused by a number of things. If the noise only occurs when going over bumps then it is possible that you have an issue with the strut on the suspension or an issue with the ABS...
Question
Oil leaking from top left side of engine, could that be the vavle cover gasket?
Oil leaks at the top of engine could be at valve covers, intake manifolds, head gaskets, cam seals, PCV valve grommets and tubing and related components. The best thing to do, to get the source of the leak identified, is...
Question
Loud noise coming front front end.
You should have the tire n the left front checked to see if it is wearing incorrect causing the humming noise. The alignment on the front may be out from a loose upper or lower control ball joints or bushings....
Question
p0300 code
P0300 is a random misfire code that can indicate any or all cylinders have intermittent misfires. Was this code found with an auto parts code reader or a full on scanner ? Sometimes those code readers will only give a...
Question
Possible 4wd issue
I would recommend checking in your owner's manual to see how the four wheel drive is recommended to be engaged. It is possible that the RPM of the engine was too high for the front axle to engage at the...
Question
After changing alternator car cuts off and idles high without gas being pressed.
Hello, It sounds like your car responds adversely to various loads being placed on the engine such as turning on the AC. This may be a sign of a faulty MAP sensor. The Manifold Absolute Pressure (MAP) sensor senses engine...
Question
I have a 2003 gmc envoy n im tryin to replace the driver side cv axle but when i put in the engine it feels loose wht bearing or s
The CV axle must be pushed into the differential until the circlip seats in the groove in the differential side gear. It sounds like you do not have the axle fully seated. Sometimes it can take some force to get...
Question
My car won't turn nor will it accelerate.
Hi there. The transmission position sensor is malfunctioning and needs replaced. The transmission position sensor tells the computer (ECM) what gear the transmission is in. If you need further assistance with your vehicle not starting, then seek out a professional,...
Question
2002 GMC Envoy message displayed on message board, turn engine off now. What does this mean?
Hi there. The message could have came on for something that may have been active on the engine or transmission. If the light comes on again, then the computer (ECM) should store the events and you could have them read...
Question
MY GMC ENVOY 2007 CAR IS CREATING A NOISE ESPECIALLY ON BUMPY RODAS.SOUND IS COMING FROM DRIVING SEAT TIRE SIDE AND ONLY ON BUMPY
Hello, thank you for writing in. The best option is to recreate the noise and pinpoint where it is coming from. You can do a bounce test to test the suspension components. Go to each bumper and press down on...
Question
I have a leak in one of the hoses or fittings. Estimate on service
Hi there. It sounds like there may be more than just a fitting or hose leaking. This definitely needs to have an inspection performed to determine the extent of the leaks and what truly needs to be replaced. I suggest...
Question
Battery light was on and now car won't start and keys stuck in ignition
Hi there. It more than likely that you are experiencing an issue with the alternator or the main relay as opposed to the battery itself. Once your car starts, power to all components and accessories is provided by the alternator;...
Question
my car is almost dying and at 40mph wont go over 2000rpms sometimes under that.
Hi there. After reviewing your question, it is quite possible that you have an oil circulation or lubrication problem; possibly caused by an obstruction in the oil lines, faulty oil pump or too much debris (sludge) in the motor. When...
Question
Fuel smell and poor fuel economy
Hello, There are a number of things that can cause the fuel smell and poor fuel mileage as you describe. I would start with checking the mass air flow sensor as this is a common component that can become dirty...

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