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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
P0483, with engine overheating.
Hello. P0483 is the trouble code a "Cooling Fan Rationality Check Malfunction. If the computer detects a discrepancy between the cooling fan's commanded state of operation, versus the actual state of the circuit, it will set off this code to...
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
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
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
My system says there is water in the fuel
Hi. Yes, water in the fuel will cause knocking. I would advise doing a fuel system maintenance - drain the fuel system all the way to the tank, including the tank. This will get rid of any water and contaminated...
Question
No start. Not getting fuel. Low voltage at pressure regulator and happened suddenly
The glow plugs are working properly as well? I know of these being a common factor in hard starts and no starts on diesel trucks. Low fuel pressure is a good sign that there may be trouble with the fuel...
Question
Have a 2016 Chevrolet Silverado HD 2500 4wd but also a button or lever under radio with a vehicle with squiggly lines behind it I'
Traction control works by controlling throttle input and braking. If the road conditions are slippery and the system senses wheel spin, the electronics will either reduce the throttle input, apply brakes to individual or numerous wheels, or both. Traction control...
Question
It is acting like it has a governor and spitting 2001 Chevy Silverado 2500 HD Diesel
Hi there - the loss of power you describe could be due to loss of pressure from the turbocharger or a lean fuel mixture. Check transmission fluid as well to be sure there is no problem with power transmission from...
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
transmission goes into shift inhibator
Here is the most common cause for your concerns. The park/neutral switch can be exposed to road water/salt/debris that ruins the integrity of the switch. Literally water is kicked up into the switch on all left hand turns and...
Question
Starting when its cold
This sounds like you may have bad batteries since the block heater only helps the engine to start in the cold but the battery still has to turn the engine fast enough to start the truck. Since a jump start...
Question
How do I fix my fuel gage in my truck?
This is a problem likely related to your fuel tank sending unit.This is a small float type component inside your fuel tank that measures the level of the fuel inside the tank. As the fuel level drops, the float level...
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
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
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...

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