Why does my GM 6.5 liter diesel engine not work?

The main cause of driveability problem is the PMD / FSD Module of the electronic fuel injection system that mounts on the injector pump, it is the most common part to fail on the GM 6.5 Liter Diesel Engines. Jim’s invention of the PDC/PMD Remote Package solved the PMD failure problem and is still offered here for sale today.

Is the 6.5 diesel engine a defective engine?

Pretty much, it is the nature of the beast. From 92-96, the 6.5 was (I’d say it was a disaster, but someone would take it wrong)not a great engine. The new Chevy trucks won’t be carrying that engine, thankfully. It’s hard to say whether an engine that goes 89K before dying is “defective”.

Is there a GM 6.5 diesel engine website?

The 6.5 Diesel products business grew, and the information on many of those fine products and other items are still here on this new website that is dedicated to upgrades for RELIABILITYand PERFORMANCEof the GM 6.5 Diesel engines.

What kind of mileage does a 6.5 diesel get?

From 92-96, the 6.5 was (I’d say it was a disaster, but someone would take it wrong)not a great engine. The new Chevy trucks won’t be carrying that engine, thankfully. It’s hard to say whether an engine that goes 89K before dying is “defective”. There is no one standard for typical engine mileage. If it’s an old VW engine, 60,000 is plenty.

When did the 6.5 diesel engine come out?

1994 was the first year for the EFI ( electronic fuel injected) 6.5 Diesel Engines and from the start they seemed plagued with driveability problems and Jim’s truck was no exception. The serious problems such as; stalling, hesitation, bucking, effected performance and safety.

What to look for in a GMC 6.5 diesel?

Pyrometer and Boost Gauges:are recommended to monitor the engines fueling and turbo conditions, also very helpful in diagnosing some driveability problems.

Is there a GM 6.5 diesel engine specialist?

His work was very successful and once the reliability issues were resolved he went to work on ways of reliably adding more power to the GM 6.5 Diesel engines, making them more efficient to also help increase Fuel Economy.

Why does my Chevy Silverado not accelerate at high RPMs?

If your Silverado won’t accelerate, but the RPM’s go up it’s usually not going to be an engine related issue. Somehow, the power that your engine is creating is not making it to the rear wheels. This is typically a transmission related issue. Here are the most common cause of acceleration with the RPM’s going up: 1. Transmission Fluid Low

Is there a 6.5 liter diesel in a GMC?

Chevy GMC 6.5TD Turbo Performance This site is in no way officially connected with General Motors, Chevrolet or GMC, Hummer or AM General or other. Welcome! I f you have a truck with a GM 6.5 liter diesel engine, this is the perfect site for you!

1994 was the first year for the EFI (electronic fuel injected) 6.5 Diesel Engines and from the start they seemed plagued with driveability problems and Jim’s truck was no exception. The serious problems such as; stalling, hesitation, bucking, effected performance and safety.

What kind of transmission does a Silverado 6.5 diesel have?

For Silverado and Sierra pickups, the engine was backed by either a 4L80E 4 speed automatic transmission (with overdrive) or the popular NV4500 5 speed manual transmission. Common problems with the 6.5 diesel include crankshaft, glow plug, and PMD failure.

What kind of transmission does a 1994 Chevy 2500 have?

All models of the 1994 2500 trucks came with a standard five-speed manual transmission that buyers could upgrade to a four-speed automatic with overdrive. Fuel economy for these trucks depended on the engine, transmission and drive configuration.

Is there a GM 6.5 liter turbocharged diesel?

Ten years later in 1992, we find ourselves with another option for the diesel and the subject of this site… the 6.5 liter turbocharged version that we all know and love.

What are the flaws of the GM 6.5?

The first flaw that I think of when I think of the GM 6.5 is cracks. Cracks in the block and cracks in the heads. Then there is of course, a hot running engine when towing, injection pump failures, poor coolant flow, blown head gaskets and (in the ’94 and up) the PMD failures.

Are there any problems with a 6.5 Turbo Diesel?

They are not indestrucable… know their limits, and what to expect… they’ll treat ya alright. Welcome aboard… your in the right place for folks who love and care about the 6.5

What causes the Check Engine light to turn off at idle?

At idle, the ECM will not get the correct information and the throttle will variate randomly causing idle surges. The check engine light will randomly turn on and off even if the car is running smoothly without any jerks and stalling.

Why does my 6.5L diesel pump stall?

Check these items before replacing your 6.5 PMD. SYMPTOM: Your 6.5L Diesel stalls just as if someone had reached over and turned off the ignition switch. CAUSE: There are two main causes. The first and most common is the PMD (also called FSD). The other possibility is the Optical Sensor located in the pump itself.

What should I do if my diesel engine stalls?

If you have codes P0251 or PO370, 17, 18, or any combination of those, you should consider the injection pump suspect. Tech Tip: If your truck stalls and will not re-start you can often get it going again by putting a cold wet rag on the PMD, or by carefully pouring a cup of cold water on it.

Is there a no start on a 6.5L PMD?

Those who are technically oriented and equipped with the proper tools, or who have a hard to solve no-start issue, can follow our in-depth 6.5L No-Start Diagnostic Guide

How many horsepower does a Chevy 6.5L Turbo Diesel have?

Eventually, the motor saw an increase in power in select applications, and output performance was advertised at 215 hp and 440 foot-pounds of torque. Built with cast-iron block and head material, the 397-cubic-inch motor was turbocharged. With a two-valve, overhead valve, the camshaft is positioned inside the cylinders.

When did the 6.5 liter diesel engine come out?

In 2000, the 6.5-liter was only available in the Chevrolet/GMC 2500 and 3500 series, heavy-duty trucks. The following year, this engine was only made available to Chevrolet/GMC 3500 series trucks. After 2001, the AM General Hummer H1 series vehicles became the only consumer automobile to include the 6.5-liter turbo diesel.

Where did the 6.5 diesel engine come from?

The 6.5 Diesel Engine was based on a Detroit Diesel design used by General Motors and is still in production now by AM General.

Are there any problems with the Detroit 6.5 diesel?

Common problems with the 6.5 diesel include crankshaft, glow plug, and PMD failure. Overheating is also an issue with the 6.5L, and it can lead to cylinder head cracking. In essence, the 6.5L Detroit diesel was a leap above the 6.2L, but it’s generally accepted that the engine was outpaced by Ford’s Power Stroke…

When did GM stop using the 6.5 liter engine?

GM continued using this engine in light-duty trucks/SUVs until 1999. In 2000, the 6.5-liter was only available in the Chevrolet/GMC 2500 and 3500 series, heavy-duty trucks. The following year, this engine was only made available to Chevrolet/GMC 3500 series trucks.

What kind of diesel does a Chevy 6.5L have?

The Chevy 6.5L Turbo Diesel Specifications. by Matt Wooddy. The General Motors company is an automobile and parts manufacturer, founded in 1908 in Detroit, Michigan. By the early 1980s, GM produced the 6.5-liter “detroit” diesel motor, available to light- and heavy-duty trucks and sport utility vehicles.

What causes a 6.5L diesel engine to not start?

“The PMD / FSD (Pump mounted driver) is by far the #1 cause of 6.5L no-starts (at least 90%). If your truck experienced random stalling like someone shut the key off before ultimately refusing to start again, the PMD is very likely the issue. Typically the random stalls caused by the PMD will become more frequent as the failure worsens.

When did the Chevy Blazer get a diesel engine?

In 1994, the diesel motor became available to the Chevrolet Blazer/Two-door Tahoe, GMC Yukon and AM General Civilian/Military Hummers. GM continued using this engine in light-duty trucks/SUVs until 1999. In 2000, the 6.5-liter was only available in the Chevrolet/GMC 2500 and 3500 series, heavy-duty trucks.

Pyrometer and Boost Gauges:are recommended to monitor the engines fueling and turbo conditions, also very helpful in diagnosing some driveability problems.

When does a GMC 6.5L diesel engine stop working?

The fuel system on those engines are very touchy and tend to go out every 100k-150k. Too much kero in the winter and they die and any form of water and they stop working as well. When it gets bad enough, it will usually spit out a code something like “fuel injection pulse width short”.

Is the GMC 6.5L diesel engine reliable?

Now it’s very reliable. I got a 1997 gmc with 115,000 miles on it its diesel and have 8 cylinders with 6.5 liter engine.. the fuel injector pump had been recalled back when we bought it and it was replaced a few times and gave us some problems for a few years after we bought it but has been fine since…..

How many miles does a 1996 GMC Sierra have?

I have a 1996 GMC Sierra 3/4 ton 6.5L diesel, and she has 144,000 miles on her, and has a very rough idle. Lately, she’s having difficulty starting and even after firing up, I have to rev it several times to prevent stalling out.

How to check the fuel pump in a GMC 6.5L?

You can check the fuel pump itself by placing the transmission in drive, and turning the key to ‘start.’ This will not engage the starter, but will engage the fuel pump. You should be able to hear it. Then go ahead and start the engine and place your hand on the fuel pump…you should be able to feel it operating.

Is the 6.5td Turbo a GMC or Hummer?

The 6.5 Diesel Specialists! Chevy GMC 6.5TD Turbo Performance This site is in noway officially connected with General Motors, Chevrolet or GMC, Hummer or AM General or other. by your reading this website or any pages therein, you agree to the website’s disclaimer, terms & conditions Welcome!

Why does my check engine light turn on?

Check Engine Light Turns On An illuminated Check Engine Light is one possible symptom of a problem with the ECM. The Check Engine Light usually illuminates when the computer detects a problem with any of its sensors or circuits. There are cases, however, where the ECM illuminates a Check Engine Light mistakenly, or when there is no issue present.

Can you stop a GM 6.5 diesel from overheating?

We CAN stop your 6.5 from overheating, cooling a GM 6.5 diesel isn’t usually a problem if you only use it for regular transportation. But then, why own a truck? We own a truck because we tow, we haul, we work our trucks because that’s what they were built to do.

When did the 6.5L diesel come out?

The 6.5L Detroit (GM) diesel represents an evolution of the earlier 6.2L. GM began rolling out the 6.5 for the 1992 model year, and it altogether replaced the 6.2 following the 1993 model year.

Can a bad crankshaft sensor cause a check engine light?

Another issue of a potential problem with the crankshaft position sensor is an illuminated Check Engine Light. If the computer detects a problem with the crankshaft position sensor’s signal, it will activate the Check Engine Light to alert the driver of the problem. A Check Engine Light can also be set off by a wide variety of other issues.

Is the 6.5 diesel engine still in production?

The 6.5 Diesel Engine was based on a Detroit Dieseldesign used by General Motorsand is still in production now by AM General.

Can a 6.5L Detroit Diesel engine overheat?

Overheating is also an issue with the 6.5L, and it can lead to cylinder head cracking. In essence, the 6.5L Detroit diesel was a leap above the 6.2L, but it’s generally accepted that the engine was outpaced by Ford’s Power Stroke and Dodge’s Cummins turbodiesel offerings.

Why does my GMC Sierra suddenly stop running?

Truck suddenly stops running, acting like it’s out of fuel. There is fuel in the gas tank and, I can hear the fuel pump when I turn the ignition on. Is there a fuse, or relay that is maybe causing this to happen?

What causes a GMC 6.5L diesel to stop?

The OPS (oil pressure switch) sends power to the fuel lift pump that is mounted on the driver’s side fram rail underneath the cab. When the OPS fails, the lift pump stops operating, causing hard starts, stalling, and poor acceleration.

Why is the lift pump not working on my GMC 6.5L diesel?

Another problem associated with the OPS is that the lift pump is supposed to send fuel through the IP and back to the tank, helping to cool the IP and the FSD= fuel solenoid driver, the little black box mounted on the driver’s side of the IP. This is basically the brain of the electronic IP.

What causes a headache on a GM 6.5L diesel?

Another common headache on the 6.5L is caused by the failure of the oil pressure switch. Not a huge problem on most other engines, but in the case of the 6.5L the OPS serves two purposes.

What kind of injection line does a 1993 GMC 6.5L Turbo have?

New replacement injection lines for the 1993 – 2000 Chevy GMC 6.5L Turbo Diesel engines with the DS4 electronic injection pump. These have the 14mm x 1.5mm fittings and are tagged… More Details »

What kind of exhaust does a GMC 6.5L Turbo have?

US Diesel Parts offers a variety of exhaust kits for 1994-2000 Chevy GMC 6.5L Turbo Diesel trucks. From exhaust manifold gasket sets to perforated mufflers, our inventory has the 6.5L turbo diesel… More Details » The air cleaner assembly is where your engine begins making power.

Why does my GM 6.5 liter diesel engine not work?