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GMC Sierra

1995 - 1998 GMC Sierra

1995 - 1998 GMC Sierra 6.5L Turbo Diesel

Strong. Fun. Great mileage. Unique modern body style... These are just a few of the things that come to mind when talking about the Sierra 6.5L Diesel. This GMC full size truck is already a classic and has seen a resurgence in recent years thanks to its solid build and unique look. If you plan to hold onto yours and not give into the demand, it only takes a few easy steps to get even more life out of that engine. At GlowShift we love GMC Sierra trucks as much as you do, and our goal is to help get maximum potential out of yours. That’s why we’ve created a lineup of high-performance gauges to keep an eye on a variety of applications for any 95-98 Sierra 2500HD/3500HD. Each gauge is equipped to take highly effective and highly accurate readings that are delivered immediately. Every gauge also comes with an attention-grabbing design as well as a choice of Gauge Series so that you can customize several key features of the gauge’s appearance. Black dual and triple pillar pods are available as well that are custom-made for the 6.5L Sierra. These extremely durable pods are made from high-quality ABS plastic and are mounted to the factory A-pillar. Along with our gauges and pods, we have a set of gauge accessories including adapters, wiring harnesses and much more. Choose any product individually or create a gauge package which features a customizable selection of gauges and pods with the option of adding accessories too. Experience an enhanced look for your Sierra’s interior and take readings with pinpoint accuracy to make sure your GMC Sierra’s 6.5L diesel is where it should be.

With every Gauge Series you have the ability to customize specific gauge features. Choose between a digital or analog display, an ultra-bright LED color for the display, a black or white gauge face, a magnified clear or tinted lens, and more. For any 1995-1998 Sierra 2500HD/3500HD, our recommendation is the Black 7 Color Series. Features include a black gauge face, magnified clear lens and ultra-bright selectable 7 color LED through dial lighting. The 7 solid color modes you can choose from are Blue, Green, Red, Teal, Yellow, Purple and White. This series also comes with 2 Color Cycle Modes which sequentially display every color, a Color Recall Option, and other key features.

Sierra Custom Gauge Packages

Choose between the Black, White or Tinted 7 Color Gauge Series, 3 GlowShift Gauges, and also receive a Black Triple Pillar Pod made to match the factory A-pillar.

Choose between the Black, White or Tinted 7 Color Gauge Series, 2 GlowShift Gauges, and also receive a Black Partial Mount Dual Pillar Pod made to match the factory A-pillar.

Experience an ultra-bright digital LED display and 10 solid color options, choose 3 GlowShift Gauges, and receive a Black Triple Pillar Pod made to match the factory A-pillar.

6.5L Turbo Diesel 35 PSI Boost Gauge

Black 7 Color 35 PSI Boost Gauge

The 6.5L Diesel 35 PSI Boost Gauge was made for any turbo-charged 95-98 GMC Sierra Full Size Truck, giving you the ability to easily monitor your GMC’s turbo boost levels from 0 to 35 PSI through one gauge. Installing this gauge will help you guard against overboosting, which could potentially result in significant damage to your diesel engine. 95-98 Sierra stock levels run at about 7-12 PSI, but with a tuned diesel engine those boost pressure levels can go much higher, which is why the 35 PSI boost gauge is an ideal fit. This mechanical gauge comes with everything required for the install, including 9’ of Boost Line and ⅛-27 NPT Compression Fittings which give you access to extremely accurate readings when you drill and tap your intake manifold. Complete with all of the color options and lighting effects that come standard with these gauges, the interior of your Sierra 2500HD/3500HD will be upgraded and enhanced by the addition of this gauge.


6.5L Boost Adapter

Boost Bolt Thread Adapter

6.5L Boost Adapter

Boost Bolt Thread Adapter GM 6.5L Turbo Diesel Boost Bolt Thread Adapter

GlowShift’s GM 6.5L Turbo Diesel Boost Bolt Thread Adapter makes it extremely easy to install a Boost Sensor or Boost Hose to any GM 6.5L Turbo Detroit Diesel Motor. This adapter replaces a bolt on the intake manifold, allowing you to use the sensor to read your vehicle's boost pressure without the need for drilling or tapping.

6.5L Diesel Transmission Temp Gauge

Black 7 Color Transmission Temperature Gauge

A Transmission Temperature Gauge is essential for any 6.5L diesel and goes hand-in-hand with monitoring 95-98 Sierra 4L80-E transmissions, especially when these trucks are towing heavy loads. This gauge allows you to closely monitor the temperature of your transmission, ensuring that it does not overheat causing significant damage. Once you connect the included electronic transmission temperature sensor with ⅛-27 NPT male threads, this trans temp gauge will take extremely accurate readings from 80° to 260° Fahrenheit. One of the major factors in reducing the life of a Sierra’s transmission is overheating, and one of the main reasons a truck transmission overheats is due to the strain of towing larger and heavier amounts of cargo. A Sierra trans temp gauge will monitor transmission temperatures during a larger haul and alert you in the event of temperature spikes. Another issue is older transmission fluid. Older transmission fluid will be less effective at performing its primary functions, one of the most important of which is keeping the system cool. The typical range for transmission fluid temperature is between 175° and 225°, and keeping within that average range is vital to your 6.5L diesel engine and transmission’s long term performance. By having a trans temp gauge, you’ll be kept one step ahead of any possible issues involving overheating that could potentially seize your transmission.

6.5L Turbo Diesel 1500 EGT Gauge

Black 7 Color 1500° F Pyrometer EGT Gauge

The 1500° F Pyrometer EGT Gauge is essential for anyone driving a 1995-1998 GMC Sierra Full Size Truck 2500HD/3500HD who is pushing for maximum output out of their 6.5L diesel engine. This gauge will ensure that your exhaust temperature is not running too hot which could result in failure, displaying readings from 0 to 1500° Fahrenheit. The installation process for the included EGT Probe involves drilling and tapping the exhaust manifold to 1/8-27 NPT and then threading and tightening the included EGT Probe. Readings up to 1500° apply to most GMC trucks, with this gauge typically being enough to cover the range regardless of the diesel engine size. The 6.5L diesel 1500 EGT gauge is also designed for Sierra Full Size Trucks that are traveling longer distances and towing heavy loads, two factors which can at times put more stress on the engine and generate higher exhaust gas temperatures. This GMC EGT gauge comes with everything required for installation, including the 1/8-27 NPT Type K Thermocouple EGT Probe with a Waterproof Connector that features 3’ of steel braided cable and 1/8-27 NPT threads. The EGT probe and power connections are made utilizing seamless Plug and Play connectivity. GlowShift’s 6.5L diesel EGT gauge also comes with a 2’ power harness and 6’ steel braided sensor harness with waterproof connector that plugs into the probe’s connector.

6.5L 30 PSI Fuel Pressure Gauge

Black 7 Color 30 PSI Fuel Pressure Gauge

The 30 PSI Fuel Pressure Gauge for the 6.5L diesel displays readings from 0 to 30 PSI. It’s the right gauge for any Sierra Full Size Truck since they run on lower fuel pressure, with an average stock PSI range of 3 to 7 PSI. This gauge ensures your fuel pressure is running at peak levels, and that it is not too low which could result in damage to your fuel pump or injectors, resulting in a loss of overall horsepower. A fuel gauge is vital to any 95-98 Sierra by helping drivers maintain their 6.5L diesel’s performance through consistent monitoring of pressure levels while driving. Doing so not only benefits your GMC truck in the short term but also helps to preserve engine life over time. The 30 PSI 6.5L diesel fuel pressure gauge comes with parts required for installation as well. Included is an Electronic Fuel Pressure Sensor with 1/8-27 NPT Male Threads, 9’ Sensor Harness and a 2’ Power Harness.


6.5L Fuel Pressure Adapter

Fuel Pressure Adapter

6.5L Fuel Pressure Adapter

Fuel Pressure Adapter GM 6.5L Turbo Diesel Fuel Pressure Thread Adapter

GlowShift’s Fuel Pressure Thread Adapter for a GM 6.5L diesel engine takes the effort out of installing a fuel pressure sensor into your GMC Sierra Full Size Truck 2500HD/3500HD. That’s because this adapter allows you to easily install your aftermarket fuel pressure sensor into your stock 6.5L GM diesel engine in minutes without having to cut or modify the vehicle’s fuel system. Simply replace the factory plastic fuel filter bleeder valve with this easy to use fuel pressure adapter which allows the 1/8-27 NPT electronic fuel pressure sensor to easily install to the filter. The flexibility this fuel pressure gauge adapter gives you is vital. Your ability to install the fuel pressure sensor into the existing factory fuel system not only simplifies the process but also eliminates the need to make any major changes to your Sierra.

6.5L Turbo Diesel Gauge Pods

Black Triple Pillar Pod that is mounted to the factory A-pillar and holds 3 GlowShift Gauges. Can also be painted using ABS plastic paint.

Black Partial Mount Dual Pillar Pod that is mounted to the factory A-pillar and holds 2 GlowShift Gauges. Can also be painted using ABS plastic paint.

1995 - 1998 GMC Sierra

Fitment Details

Year Make Model Engine
1995 GMC Sierra, 1500, 2500HD, 3500HD 6.5L Detroit Diesel
1996 GMC Sierra, 1500, 2500HD, 3500HD 6.5L Detroit Diesel
1997 GMC Sierra, 1500, 2500HD, 3500HD 6.5L Detroit Diesel
1998 GMC Sierra, 1500, 2500HD, 3500HD 6.5L Detroit Diesel

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