Category: Technical Service Bulletins

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

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...
Suburban, Tahoe & Yukon Have A Commonly Miswired Part – Fixing Will Unlock A Feature You Didn’t Know About
Suburban, Tahoe & Yukon Have A Commonly Miswired Part – Fixing Will Unlock A Feature You Didn’t Know About
Did you know that your Suburban, Tahoe, or Yukon might be hiding a feature you never knew existed? General Motors (GM) has uncovered a surprising...
Chevrolet, GMC & Cadillac Full-Size SUV Batteries Dying – Liftgates Randomly Opening
Chevrolet, GMC & Cadillac Full-Size SUV Batteries Dying – Liftgates Randomly Opening
Some 2022 through 2024 Tahoe, Suburban, Yukon and Escalade full-size SUV owners are finding their vehicles batteries are mysteriously dying and/or their rear tailgates are...
2023/2024 Chevrolet Silverado Police Pursuit Equipped with Wrong Tires
2023/2024 Chevrolet Silverado Police Pursuit Equipped with Wrong Tires
2023/2024 Chevrolet Silverado 1500 models equipped with the Police Pursuit Package (RPO 9C1) may have been built with the wrong tires. Chevrolet has announced “Customer...
Lifter Nightmare: Why GM is Replacing Some 6.2L L87 V8 Engines
Lifter Nightmare: Why GM is Replacing Some 6.2L L87 V8 Engines
Chevrolet, GMC, & Cadillac may have built vehicles powered by 6.2L V8 engines with a big problem.  The solution? Replace the entire engine. In April,...
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