What Does a GMC Multipoint Inspection Check?

Bring a GMC in for an oil change and your service advisor hands back a color-coded sheet covered in checkmarks, measurements, and a few items circled in yellow or red. That sheet often ends up folded into the glovebox, unread. The sheet is the most useful document your truck produces all year, so pull it back out and read it.

Below is what our team checks at Brattleboro Auto Mall GMC, what the numbers on that form mean, and why timing an inspection before winter matters in southern Vermont.

What Does the GMC Multipoint Inspection Actually Cover?

The inspection covers seven major systems, and a technician works through them in a documented order rather than a quick eyeball, so every item that carries a measurement (brakes, tires, battery, fluids) comes back as a real number on your copy of the form instead of a vague impression. Nothing is guesswork.

Beyond those seven zones, the form runs an OnStar diagnostics check (if active), pulls your vehicle's service history, and scans for any open recalls. That recall scan is worth flagging. It runs automatically, without you asking.

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What Do the Three Color Ratings Mean?

The form uses three colors (green, yellow, and red), and the concept is simple enough, but the yellow category is where the form earns its keep, since yellow is the one rating that's easy to misread as either fine or failing when it's really neither. Read it carefully.

Green (Checked and OK) means the item meets GM factory specifications right now. No action needed.

Yellow (May Require Attention Soon) means the item is within acceptable range but trending toward the end of its service life. A yellow brake rating doesn't mean the brakes are failing. It means they're in the window where you want to track them and plan ahead. Letting yellow items slide until they turn red is exactly how a predictable maintenance cost becomes an unplanned one.

Red (Requires Immediate Attention) means the item is outside spec and needs to be addressed before you should rely on that system. A red brake rating or a red tire rating is the technician's documented recommendation to act now.

For tires, the form measures tread depth at every corner. Eight 32nds of an inch or greater shows as green. The form flags at 3/32 or less. A new tire typically starts at 10/32 to 12/32 of an inch, so anything below 4/32 is getting close to the point where wet-road stopping distance climbs measurably.

Which Items Matter Most on Vermont Roads?

On Vermont roads, the components that matter most are the ones our winters and dirt-road miles punish hardest, so the multipoint inspection leans harder on shocks, CV axle boots, exhaust, and the battery than it would in a mild flat climate where salt and frost heaves never enter the picture. Our roads are the reason.

Route 9 west from Brattleboro climbs steadily through the Green Mountain National Forest toward Marlboro and Wilmington. Sustained grades, shade that keeps ice on the pavement longer than you expect, and a road-salt schedule that runs from October into April all stack up here. Those conditions put specific stress on specific components, and the multipoint inspection is designed to catch them.

Shocks and struts. Southern Vermont's frost heaves and dirt town roads (Vermont has more unpaved road mileage than almost any other state) cycle shocks far harder than flat pavement does. The technician checks them visually and by feel on the lift. A leaking or collapsed shock doesn't always announce itself with a dramatic symptom. The inspection catches it before it starts affecting handling.

CV axle boots and U-joints. Road salt accelerates the cracking of rubber boots on CV axles. Once a boot cracks, grease escapes and grit gets in. We check boot condition visually on every pass. Catching a cracked boot early costs far less than replacing the whole axle after the joint fails.

Exhaust system. Salt corrosion works on exhaust components from the outside in. Rust-through on an exhaust component is a common finding on trucks that spend Vermont winters on salted roads. The inspection checks the full system with the vehicle on the lift.

Battery. Cold-cranking amps drop as the temperature drops. A battery that tests borderline in October will give you less reserve in February. The GM inspection includes a voltage reading and a printed battery report. That printout tells you where the battery actually stands, not just whether the truck started this morning.

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What Does the Inspection Check Under the Hood?

Under the hood, the form covers every fluid that has a measurable level plus several components that don't carry a dipstick but still degrade with age and heat, so engine oil, coolant, brake fluid, belts, and both air filters all get documented in the same pass. Here's how that breaks down.

Engine oil gets documented with the current Oil Life Monitor percentage, and the technician notes whether the monitor was reset after an oil change. If your percentage is low and no reset was documented, that's worth asking about.

Coolant, brake fluid, transmission fluid, power steering fluid, and windshield washer fluid all get checked against the reservoir markings and topped off where needed. Brake fluid also gets a look at the reservoir for visible contamination. Dark, cloudy brake fluid absorbs moisture over time, which raises the boiling point threshold and can affect pedal feel under hard braking.

Belts and hoses get a visual check for cracking, wear, and tension. The engine air filter and cabin air filter are both on the form. A clogged cabin air filter in mud season (late March into May in this region) puts more load on the HVAC blower motor and cuts airflow into the cab. Not a dramatic failure, but an easy fix to stay ahead of.

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How Is the Multipoint Inspection Different from a State Inspection or Oil Change?

A fair question before you book is how this differs from a state inspection or an oil change, and the plain answer is that all three happen at the service counter but do completely separate jobs, so it pays to keep them straight before you walk in. They get confused a lot.

A Vermont state inspection is a legal requirement and checks your vehicle against minimum safety standards set by the state. It's a pass-or-fail. The multipoint inspection is not a state inspection and does not substitute for one.

An oil change is a specific service that replaces the engine oil and filter. The multipoint inspection doesn't include an oil change unless you're having both done at the same visit.

The GMC multipoint inspection is a documented assessment of your vehicle's current condition across all major systems. It produces a written record with measurements. It fixes nothing on its own. The technician won't pull parts without authorization. The form goes to you, and you decide what to act on.

The GMC Yukon and other full-size GMC vehicles use the same standardized form. The checklist adapts to the specific vehicle (a Sierra 2500 HD with a diesel adds a diesel exhaust fluid check, for example), but the structure stays consistent.