Category: Technical Service Bulletins

Access critical Technical Service Bulletins for GM Trucks: expert diagnostics, solutions, and updates. Your resource for vehicle maintenance.

How to Fix the 3.0L LZ0 Duramax Passenger-Side Rattle (Service Bulletin PIT6300B)
How to Fix the 3.0L LZ0 Duramax Passenger-Side Rattle (Service Bulletin PIT6300B)
If you drive a newer GM half-ton with the 3.0L LZ0 Duramax turbo-diesel, you might have noticed an annoying buzz, rattle, or vibration coming from...
GM Transparent Trailer Fix: Solving Calibration Issues for Trailers Over 119 Inches
GM Transparent Trailer Fix: Solving Calibration Issues for Trailers Over 119 Inches
If you have spent the last few weeks driving in circles around an empty parking lot trying to get your GM Transparent Trailer system to...
Blank or Black Screen on Your GM Truck or SUV? Here’s What to Check First
Blank or Black Screen on Your GM Truck or SUV? Here’s What to Check First
Your screen goes black. No speedometer. No backup camera. No infotainment. Just a dark slab of glass staring back at you. Maybe it comes back...
Front Brake Noise on Your New Colorado or Canyon? It Might Not Be What You Think
Front Brake Noise on Your New Colorado or Canyon? It Might Not Be What You Think
If you own a 2023–2026 Chevrolet Colorado or GMC Canyon and you’re hearing a squeal or ticking noise from the front end while driving, but...
Squeaky or Clunking Rear Leaf Spring on 2020-2025 Silverado & Sierra Duramax? Here’s Why.
Squeaky or Clunking Rear Leaf Spring on 2020-2025 Silverado & Sierra Duramax? Here’s Why.
If you own a 2020-2025 Chevrolet Silverado 1500 or GMC Sierra 1500 with a 3.0L Duramax LM2 or LZ0, you might have noticed an annoying...
Chirp & Squeak? Why Your GM 6.2L & 6.6L V8 Sounds Different—And Why It’s Normal
Chirp & Squeak? Why Your GM 6.2L & 6.6L V8 Sounds Different—And Why It’s Normal
If you own a Chevy Silverado, GMC Sierra, Tahoe, Yukon, or even a Cadillac Escalade with the 6.2L L87 or 6.6L L8T V8, you might...
Chevy and GMC Admit Brake Pads on Silverado and Sierra May Only Last a Few Thousand Miles
Chevy and GMC Admit Brake Pads on Silverado and Sierra May Only Last a Few Thousand Miles
If you’ve been surprised by how quickly your GM truck or SUV is chewing through front brake pads, you’re not imagining things. GM recently issued...
Why Is My Silverado’s Speakers Crackling During Phone Calls? Here’s What I Found
Why Is My Silverado’s Speakers Crackling During Phone Calls? Here’s What I Found
If you’re driving a 2022–2024 Chevrolet or GMC vehicle and experiencing annoying crackling or static sounds from the speakers during phone calls, you’re not alone....
Understanding the “GCW Overweight” Messages In Your Chevy Silverado or GMC Sierra
Understanding the “GCW Overweight” Messages In Your Chevy Silverado or GMC Sierra
If you own a Chevrolet Silverado or GMC Sierra and tow trailers, you might see a “GCW Overweight” message appear in your gauge cluster. It’s...
2024 & 2025 Silverado / Sierra Owners Experience 4WD Indicator Confusion
2024 & 2025 Silverado / Sierra Owners Experience 4WD Indicator Confusion
If you’ve recently started up your 2024–2025 Chevrolet Silverado or GMC Sierra and noticed that the four-wheel drive (4WD) indicator isn’t immediately visible, you’re not...
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