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Silverado 2500 HD

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Question
Check engine light flashing at hwy speed
Have a certified technician start off by scanning the system for fault codes. When the check engine light is on faults will be stored in the system. These faults will give the technician a direction to take do diagnose the...
Question
My 4WD is not engaging. Is a 2007 Silverado have electronically controlled axle actuator or vacuum? Or is my problem in the hubs?
Hi there. The actuator on your 4WD system to your vehicle is electronic. Most of the Silverado 2500 model Chevrolet trucks have issues with the actuator failing in the front axle due to weather and road conditions. Check the harness...
Question
Heater is blowing cold air truck is overheating and now I reduced power engine power light is on
The heater not working in some cases may be related to the overheating problem you are also having. This may be due to a faulty heater blower motor or potentially a bad heater core. As you may know, the heater...
Question
Q: No crank no start.
Hi there. Check the battery cables and make sure that they are tight and clean. Check the cables that attach to the starter and make sure that they are all tight and clean. The starter remote wire could have an...
Question
Truck goes into reduced power. I have to stop, remove the key from ignition, remove gas cap, and put the gas cap back on. Truck some times will do this 2 to 4 times.
Hi there. Check the gas cap seal and see if there is a crack on it or if there is a distortion on the seal. If there is, I recommend replacing the gas cap. The gas cap seal is designed...
Question
How long will it take to remove and replace the engine and transmission.
Hi Chuck. That really depends on your tools, equipment and experience. Some professional mechanics with engine lifts and air tools can remove the accessories, motor and transmission mounts in less than two hours. The best advice I can offer is...
Question
Reduced Engine Power and Truck won't start. PLEASE HELP ASAP! Thanks!
Hello, thank you for writing in. The reduced power light will either trigger when there is malfunction with the vehicle and it is trying to protect itself, or when the engine actually suffers a loss in power and is struggling...
Question
Transmission stuck in gear in Drive 2007 Chevrolet Silverado 2500
Hi there - it's possible that your problem source is the torque converter lockup clutch NOT releasing as the truck slows down. This would lug the engine as though it's in top gear until vibration, or an engine stop/start sequence...
Question
Enging not reaching operating temperature and heater not getting hot
You need to have the cooling system fan clutch checked to see if it is keeping the fan running high speed even when cold. With engine idling with the engine cold you should have very low air flow from the...
Question
4x4 won't engage and push button switch lights up intermittently.
Hi there. Check the electrical wiring to the transfer case shifter motor and see if there is a voltage present when pushing on the 4WD button. If there is a voltage present, then I recommend replacing the servo motor on...
Question
Truck isn't engaging into 4 Hi, but will go into 4 Low.
Hi there. Sounds like the shifter module motor or shifter rail is not working properly. Check the wiring on the shifter module motor on the transfer case and see if the wires are split or damaged. If the wires are...
Question
Codes p0708 and p0706 show up i can drive and shift fine one trip the next trip it will act up.
Hi there. The P0708 trouble code means that the Engine Control Module (ECM) has detected a malfunction with the transmission range sensor. A mechanic would begin the diagnosis of the P0708 trouble code by finding the manufacturer’s suggested procedure for...
Question
Bubbles and pressure in the overflow tank
If the coolant level was low due to a leak, such leaks can be found during a leak diagnostic with simple pressure testing. If the cooling system doesn't maintain pressure, and no external leak is visible, coolant could be leaking...
Question
Idles but when driving it acts like its out of fuel.
Check all of the battery ground cables to the car on the battery, engine, and chassis. There is a bad ground somewhere that is causing the ECM to not work properly. This would cause the fuel pump to not work...
Question
2009 chevy silverado, has a clicking sound by the steering colum. The trans temp blink dashes, then the temp, wint shift into tow
One of the blinking indicators, or the malfunction(s) that it represents, would have to be traced and resolved before it could be determined if they all have a common cause. The clicking noise is actually more likely to be from...
Question
Q: fuel filter
Hello. We will be happy to assist you. There are are a few things that I recommend a technician inspect. Fuel should have been inside the filter once you removed it. A test must be done to see if the...
Question
My chimes only come on after I start my engine
Hi there. Alert chimes are triggered by sensors located on doors, seat belts and other devices that alert a driver that something is either open or not properly secured. To determine why they are not working correctly, have a mechanic...
Question
if my transmission fluid was filled a quart over could this cause my reduced engine power light to come on?
Hi there. Usually the reduced power light is caused by an engine component failure, like the throttle body, TPS or bad O2 sensors. It is very possible that the additional transmission fluid has created a trouble code that might have...
Question
trans hot idle engine comes on when i start the truck
Hi there. Understanding what causes the transmission hot idle warning light is critical to diagnosing your problem. The Transmission Hot – Idle Engine message can be displayed when the transmission fluid is too hot, which prevents the transmission from cooling...
Question
2004 chevy silverado 2500hd dies when put in gear after the engine warms up
Hello, thank you for writing in. Unfortunately, there are a large number of components that can contribute to this issue. The first thing you will want to do, regardless of a check engine light being present or not, is to...

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