Check to see if any diagnostic trouble codes have been stored and use a real time scanner to check the response of the throttle position sensor and oxygen sensors. The throttle position sensor sends a reference voltage to your power-train...
The noise is the parking brakes are out of adjustment and the brakes are dragging. Check the rear brakes and see if they are releasing when going in reverse. If you need further assistance with your brake system, then seek...
The brake system and nearby components should be inspected. There has to be something noticeably loose to create that obvious of a noise on braking. Were a mechanic to look closely, he or she would undoubtedly find the issue as,...
Hi There, This is completely normal for the oil pressure to increase when accelerating. The oil pressure inside the motor increases as the motor works harder. Your oil pressure switch reads this change in pressure and relays this to the...
Check to see if any diagnostic trouble codes have been stored in both the PCM and TCM. Check the fuses in the circuits that power the transmission controls. Occasionally, a short in a sensor such as an oxygen sensor will...
What you are describing 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...
If you are attempting to complete this task on your own, I would highly recommend using the jack stands for support; as the cross-member can fall rather quickly and be difficult to hold up before both sides are removed. ...
When a low oil pressure warning is displayed, it can normally be narrowed down to one of three basic causes. An oil pressure sensor that is reading a faulty pressure, oil pressure that is actually low due to worn bearings...
Hi There, As you know, code P0332 relates to the knock sensor, which may be a result of code P0306, which relates to the crankshaft position sensor. When the crankshaft position sensor is detected to have more than a 2...
There are a number of things that may cause the kind of hesitation you are describing ranging from transmission control issues to fuel supply to ignition problems. This may also be caused by a faulty transmission speed sensor. The speed...
Hi King. Thanks for writing in today. You can request an estimate to have one of our mobile mechanics complete the fuel pump replacement for your Chevrolet Avalanche by clicking this link to the service page](https://www.yourmechanic.com/services/fuel-pump-replacement). In regards to doing...
What you are describing sounds like a wheel bearing that may be starting to fail. A wheel bearing will usually fail due to pitting or small damage on the surface of the rollers or the bearing race. Both the surface...
Hi there. Thanks for writing in to YourMechanic.com. Unfortunately, we do not offer mechanical repair or service on aftermarket part installations like the LED lights you are referring. It is probably best for you to contact the manufacturer of those...
You need to turn on ignition to run position to see if theft system is activated? If it is you may have cleared the theft module and will need to get it reprogrammed to the key.
Engines require more fuel to start and run properly when cold. If the fuel mixture is either too rich or too lean for cold running, the engine can run rough or even stall. The fuel mixture can be effected by...
Rear sway bars are to help the rear of the vehicle to be stable when driving around turns or maneuvers and when towing another vehicle. The sway bar should not affect the vehicle when hitting bumps unless the links or...
Hello. It sounds like the pins in the transmission female connector may have gotten bent when you pressed the connection back in. From the codes you are getting you are having connection issues. It is hard to see it but...
Hi there. Your 2004 Chevrolet Avalanche should have an anti-lock braking system; which in most cases will restrict the braking to ensure this doesn't occur. However, there are some things that will restrict the ABS from working as it should...
Hello, thank you for writing in. The traction control system and the ABS work hand in hand to help keep you on the road in slick conditions. They are both monitored heavily by the computer which makes diagnostics a lot...
Hi There, This suggests you may have a short, a faulty connection somewhere in the main harness from the lights or potentially an issue with the charging system or battery. If the battery is weak enough, this may draw enough...
