Category: GMC Sierra HD

The definitive resource for GMC Sierra 2500HD and 3500HD owners. From breaking news and hands-on reviews to technical breakdowns of the 6.6L Duramax and Allison transmission, we cover the entire heavy-duty lineup. Whether you are maximizing your fifth-wheel towing capacity, researching Denali Ultimate features, or troubleshooting a service code, find the expert insights you need to keep your Sierra HD working hard.

American Made: 27 Million Trucks Built at Fort Wayne and Flint
American Made: 27 Million Trucks Built at Fort Wayne and Flint
March 2026 is officially a month for the history books at General Motors, Chevrolet & GMC. Recently, two of the most important manufacturing plants in...
“Service Forward Collision” on a Silverado or Sierra? Try Cleaning the Glass, Dummy.
“Service Forward Collision” on a Silverado or Sierra? Try Cleaning the Glass, Dummy.
Imagine the sinking feeling: you are driving your late-model, high-tech Chevrolet Silverado or GMC Sierra, and suddenly the dashboard lights up with a “Service Front...
The “Crank No Start” Glitch Plaguing GM V8 Engines
The “Crank No Start” Glitch Plaguing GM V8 Engines
Nothing is more frustrating than climbing into your rig, hitting the ignition, and getting a whole lot of nothing. If your truck is throwing a...
GM is Recalling Almost Every 2026 Model (But Probably Not Yours)
GM is Recalling Almost Every 2026 Model (But Probably Not Yours)
What if General Motors just woke up one day and decided to recall every single model they make all at once? If you look at...
What To Do If Your Silverado’s Engine Won’t Shut Off: Inside GM’s Weird New TSB
What To Do If Your Silverado’s Engine Won’t Shut Off: Inside GM’s Weird New TSB
Imagine pulling into your driveway, putting your truck in park, and hitting the ignition button to turn it off. Instead of peace and quiet, the...
Adding a Factory Trailer Brake Controller to a Silverado or Sierra: The Official Answer
Adding a Factory Trailer Brake Controller to a Silverado or Sierra: The Official Answer
You finally found the perfect truck on the dealership lot, but you realize it is missing one crucial towing feature. If you are currently asking...
Why Your Chevy or GMC Lights Flash When You Walk Up (It’s Not an Electrical Bug)
Why Your Chevy or GMC Lights Flash When You Walk Up (It’s Not an Electrical Bug)
If you’ve ever walked up to your Chevrolet Silverado or GMC Sierra and noticed the headlights or taillights quickly flashing at you, it can certainly...
GM Truck & SUV Engine Oil Capacity Specs: The Ultimate Master Guide
GM Truck & SUV Engine Oil Capacity Specs: The Ultimate Master Guide
There is nothing worse than standing in the oil aisle at the auto parts store, or worse, laying under your truck with the drain pan...
Is Your Fuel Gauge Lying? GM Recalls 2025-2026 Silverado & Sierra 3500HDs Over Stalling Risk
Is Your Fuel Gauge Lying? GM Recalls 2025-2026 Silverado & Sierra 3500HDs Over Stalling Risk
General Motors has officially issued a new safety recall (NHTSA Recall No. 26V129) affecting nearly 12,000 heavy-duty trucks. If you rely on a 2025 or...
Why Your Newer Silverado HD Headlights Are Randomly Quitting (And GM’s Fix)
Why Your Newer Silverado HD Headlights Are Randomly Quitting (And GM’s Fix)
Having your exterior lights randomly stop working is never a fun experience—especially when you’re relying on a heavy-duty rig after dark. If you own a...
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