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V8-6.6L Turbo Diesel

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Why does my vehicle go into reduce engine power mode. 2008 Chevrolet Silverado
Hello. I would need to know what code you are getting to know what needs to be done to take care of this. If you are getting a MAF code then the sensor may be failing, but that will not...
Question
Knocking noise
Hi there. In most cases, when you hear a constant knocking sound upon engine start, it's due to a lack of lubrication or oil inside the engine (typically the cylinder heads and their components). Once the motor begins to warm...
Question
Makes a popping noice and blows out white smoke real bad. I don't know what the issue is. Any ideas?
Hi there. It seems that there could be a head gasket or intake manifold gasket is leaking causing coolant to enter the combustion chamber make the white smoke and the engine to have a popping noise. Also, since you have...
Question
duramax running crappy in cold weather
Hi there. In most cases, when an aftermarket tuner is utilized, traditional OEM diagnosis of problems is extremely difficult; since they impact both electrical and mechanical fuel, and ignition systems. Your best bet is to have a professional mobile mechanic...
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
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
Is there a difference in power steering pumps for a 2003 2500hd and 2500 p/u with the duramax
According to the AC Delco catalog, the OEM (original) pump used in the 2500 is A/C Delco part number 15909826. The OEM (original) pump used in the 2500HD is part number 15909827. Although there also "appears" to be a generic...
Question
Which diesel is most superior? 7.3 5.9 6.6
The 5.9L diesel is a straight six engine. The 6.6L diesel and the 7.3L diesel are both V8 engines. If find that there are more maintenance when it comes to the V-configured engines to the straight six engines. I have...
Question
Why does my truck run rough after leveling it out 2003 GMC Sierra 2500HD
Hello. You should not need to turn the torsion bars all of the way up to level the vehicle out. This will make the vehicle ride rough and it will put excessive strain on the torsion bars which can cause...
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
I have a 2015 Silverado and beginning yesterday, the horn honks two brief bursts as I turn the key. How do I disable?
Hello, thank you for writing in. Typically this is a sign that the vehicle is trying to tell you something. The first step is going to be scanning the vehicle for diagnostic codes to see if there is an issue...
Question
I replaced my compressor clutch on my 2005 Duramax and it started working working again I added some more refrigerant and it is at
Hi there. Sometimes a new compressor installation will not produce the desired level of cold unless the high pressure and low pressure hoses are also swapped, pressure checked for leaks and tuned after adding refrigerant. In other instances, components beyond...
Question
My trans hot idle engine it's in mornings when he turn on truck
It sounds like your transmission is overheating. I would recommend having the fluid level and condition checked first. If the fluid level is low, I would recommend topping it off and checking for leaks. If the fluid level is not...
Question
My 2500HD wont fire. But its turning.
Check to see if there are any stored diagnostic trouble codes. Be sure you have a fully charged battery that passes a load test. Confirm that the engine immobilizer system (security system) is not activated thus preventing the car from...
Question
2006 GMC 2500 HD P0101 Mass ari flow sensor (MAF) performance
The powertrain control module (PCM) sends the mass air flow (MAF) sensor a 12-volt reference signal. Incoming air flows over a wire inside the MAF, which allows it to measure intake air temperature, and therefore air density. The MAF then...
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
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
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...

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