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Avalanche 1500

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Question
It will not start and the headlights and hazard lights are blinking
GM vehicles equipped with the PASS-KEY or VATS anti-theft system usually require the system be reset whenever the battery is drained or replaced. Follow this procedure. Step 1 – Attempt to start the vehicle. It will crank, but not run....
Question
Diagnose torque converter selenoid or transmission
Hi there. The computer could be putting the vehicle into limp mode due to an issue that may be happening and reduces the engine performance. Check the battery, alternator, and all of the sensors on the engine and make sure...
Question
Shaking when braking and clanking/banging noise coming from what seems to be the exhaust.
Hello, thank you for writing in. The vehicle is likely facing two different issues. While it is possible you are feeling a rough idle in the steering wheel, you may be facing a worn or dirty brake. The extra strain...
Question
Q: possible transmission problem.
Hi there. Since the transmission fluid is a little dirty, I recommend replacing the fluid with the transmission filter. The torque converter will be working normally at all times and it will not cause the vehicle to slow down when...
Question
When power steering pump cap is removed should there be a slight presure release
You should have the power steering reservoir cap checked to make sure the vent on cap is not blocked. Also make sure the system is bled of excessive air in the system. Once these two things are checked then you...
Question
I'm getting high oil pressure readings when Accelerating
This may be happening for a a few different reasons such as a faulty oil pressure gauge in your dash, too much oil in the motor or clogged oil passages. I would start by checking the oil in the motor...
Question
Ran out of gas wont start with gas
It sounds like you may have a fuel pump that is not working properly or maintaining enough fuel pressure to keep the motor running. If the engine was run completely out of fuel, there is a chance this could have...
Question
When I put my feet on gas pedal it won't go fast no more then 30
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...
Question
When backing up, my car makes a rocking noise.
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...
Question
Oil pressure gauge goes up when accelerating
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...
Question
I have a 2002 chevy avalanche z71 it won't move forward in any gear,but it will move in reverse
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...
Question
How much is a transmission service
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...
Question
oil pressure low light came on one time for a few mins, went out hasnt came back on. what does that mean
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...
Question
Knock sensor for 2002 chevy avalanche
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...
Question
Chevrolet Avalanche fuel pump replacement
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...
Question
How important are rear sway bar links ?
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...
Question
04 Avalanche "Battery Not Charging" even after new battery, alternator, ecm, and clean cables.
Confirm that there are no parasitic loads while the car is both idle and running. The grounding of the alternator should be checked. If grounded through the block, make sure all engine to body grounds are adequate. The actual output...
Question
Hi. I have an 04 avalanche the brake system seem to have locked up while i was driving. can u tell what it might be? its makes a l
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...
Question
Brake abs and traction control light on lost brakes today
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...
Question
2005 Chevy Avalanche dash lights occasionally go dim.
Yes, but any component in the lighting circuit could cause or contribute to the problem. An intermittent fault is causing a voltage drop in the circuit and that, in turn is causing the lights to dim. Often, there is a...

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