GM Maintenance & Service

PF63, PF64, PF48E and PF66 cover most GM engines but are not interchangeable. Full ACDelco cross-reference chart with engine codes, years and specs.

What still wears out on a Chevy Bolt, Equinox EV or Silverado EV: cabin air filters, wiper blades, tires, brake fluid, coolant and the 12-volt battery.

The Encore GX and Trailblazer 1.3L turbo uses ACDelco 41-106IP, three plugs, about every 60,000 miles. The Envista is 1.2L and takes 41-156 instead.

The ten parts that actually wear out on a Chevy Express or GMC Savana, the mileage windows to plan for, and how GVWR changes which part fits.

dexos1 Gen 3 is for gasoline, dexosD for the 3.0L Duramax, dexos2 is European, dexosR for high output. Full GM oil spec and capacity chart by engine.

One chart of OEM cabin air filter part numbers for Chevrolet, GMC, Buick and Cadillac, plus where the generation breaks change which filter fits.

What Dex-Cool is, what GM spec it meets, why coolant color misleads, and what you should never mix into a Chevy, GMC, Buick or Cadillac cooling system.

OEM part numbers for Cadillac cabin and engine air filters, with fitment by model and year for Escalade, XT4, XT5, XT6, CT4, CT5 and CT6.

Cadillac 6.2L V8 vs 3.0L twin-turbo maintenance parts compared: oil capacity, viscosity, filter type, plugs and air filters, plus what to verify by VIN.

See which gas brands are actually TOP TIER certified in 2026, why General Motors backs the standard, and how to keep your fuel system clean between fill-ups.

Every Chevy Equinox engine, across both the 4-cylinder and V6 configurations offered over the years, uses a timing chain rather than a timing belt. Jump to a section: Why it's...

Before resetting anything, inflate all four tires to the pressure listed on the placard inside the driver's door jamb, since a TPMS reset performed on underinflated tires won't hold. Jump...

The Equinox's cabin air filter sits behind the glove box across every generation, and replacing it is one of the easiest maintenance jobs you can do yourself in a few...

A clunk over bumps is easy to dismiss until it isn't. Here's how to tell a worn strut mount from a failing sway bar link before either one gets worse.

If your Camaro is a daily driver and not a garage queen, protection matters more than looks. These are the add-ons that quietly save you money and hassle over years...

Camaros don't have an unusually long list of maintenance items, but a few wear parts get overlooked because they fail gradually instead of all at once. Here's what to watch...

If your GM vehicle's vents are blowing weaker than they used to, or you're noticing a musty smell every time the AC kicks on, a clogged cabin air filter is...

Clear visibility is a safety item on any car, and on a 1984 Impala it matters more than usual: you are working with a wiper arm that is forty years...

A clogged engine air filter doesn't just choke off power — on modern GM engines, it can also contaminate the Mass Airflow sensor and trigger real driveability problems. Overview &...

The cabin air filter is one of the cheapest, easiest services on this entire list — and one of the most commonly skipped simply because owners forget it exists. Overview...

Most owners assume their GM vehicle has a fuel filter they can swap in the driveway — but on nearly every 2007+ model, that filter is built into the in-tank...

Water pump failure is one of the few maintenance issues on this list where the repair cost can vary wildly depending on your specific engine design — belt-driven pumps are...

A weak battery doesn't just leave you stranded — it quietly puts extra strain on your alternator every time it struggles to start the engine. Overview & Interval 12V batteries...

Brake fluid is the one maintenance item on this list that's driven entirely by time, not mileage — and it's a safety system, so neglect here carries more risk than...

GM's Dex-Cool has a reputation problem, but most of the horror stories trace back to skipped flushes and mixed coolant types rather than the coolant chemistry itself. Overview & Interval...

Differential fluid is a classic "out of sight, out of mind" service — right up until a whine in the rear end turns into a much bigger repair. Overview &...

Transfer case fluid is easy to forget since most owners never look under a 4WD truck — but a $150 fluid change now can prevent a multi-thousand-dollar replacement later. Overview...

GM markets many of its automatic transmissions as "lifetime fill," but real-world shop experience tells a different story — proactive fluid service is one of the cheapest ways to avoid...

Spark plugs are a "set it and forget it" part for a long time — until they wear enough to start taking ignition coils and catalytic converters down with them....

Oil changes are the single most important piece of maintenance on any GM vehicle — and the easiest to put off since the engine rarely complains right away. Overview &...

Cold weather stresses every system in your Silverado 1500 — the battery loses output, fluids thicken, tyres lose pressure, and a 4WD system that has not been used since last...

Changing spark plugs on the 5.3L EcoTec3 V8 is a straightforward job that most mechanically comfortable owners can handle in 2–3 hours. The iridium plugs are rated for 97,500 miles,...

The cabin air filter is one of the easiest and most overlooked maintenance items on the Silverado 1500. Dealers charge $50–$80 to replace it. The filter itself costs $15–$30. The...

Changing your own oil on a Silverado 1500 is one of the best maintenance habits you can build. It takes 30–45 minutes and saves you a shop visit — while...

The Chevrolet Silverado 1500 is one of the most capable, versatile, and widely owned trucks on the road — but getting the most out of it means knowing how to...

After every oil change, you need to reset your GM vehicle's Oil Life Monitor (OLM) — otherwise the system keeps counting down from wherever it was before the change and...

The 5.3L V8 EcoTec3 is the heart of millions of Silverados on the road today — and keeping it healthy starts with one simple thing: the right oil. But walk...

Whether you just drove a new Chevrolet Silverado off the lot or you have been loyal to GM for decades, this guide is the front door to everything we cover...

Complete Chevrolet & GM Vehicle Maintenance Schedule Guide 2026 A maintenance schedule is worth following because GM engineers know which parts wear first and which fluids break down under heat....

Why sticking to a 5,000-mile oil change interval protects your GM engine better than extended intervals — sludge, wear, dexos1 oil, and what happens if you wait too long.