Tires are the only part of a truck that touches the road, and they're usually the last thing anyone looks at. A Sierra on the Highway 380 Bypass and an Acadia on a school route both depend on a few hand sized patches of rubber. When those wear unevenly or go soft, everything else about the vehicle feels worse.
A walk through what to look at yourself follows, covering which signs mean it's time to bring the vehicle in and how to match tires to the way you drive. Pressure and tread figures differ for each vehicle, so use the placard on the driver's door jamb and your owner's manual as the final word.
Quick answer: Check your tires monthly for tread, pressure and uneven wear, rotate them on the schedule in your owner's manual, and book an alignment check if the truck pulls or the steering wheel sits crooked. Holiday GMC in Graham sells and installs tires, and the new tires page is the place to start.
How do you know when GMC tires are worn out?
Start with your eyes. Look across the whole tread face, not one spot, and check for the small raised wear bars that sit in the grooves. When the tread is level with them, the tire has reached the end of its safe use. The grooves are what push water out from under the tire, so a worn set loses grip first on wet pavement.
Then look at the sidewalls for cracks, bulges and cuts. Texas sun and heat age rubber even when the tread looks good, so a tire that's sat a long time can be tired before it's worn. Ranch gravel adds another hazard, since stone cuts show up on the sidewall more than on the tread.
Finally, press a gauge on each valve stem when the tires are cold. The correct pressure is on the placard inside the driver's door, and it can differ from the number printed on the tire itself. Trucks that tow or carry heavy loads sometimes call for a different setting, so confirm in the manual.

Why does tire rotation matter on a truck or SUV?
Front and rear tires wear differently. A four wheel drive truck loads its front end with steering, braking and engine weight, so the front tires often wear on the shoulders. Rotation moves each tire to another position so the wear spreads out, which helps the whole set last longer and keeps handling even.
The owner's manual lists a rotation interval for your vehicle, and it makes sense to tie it to an oil change. That way one trip handles both. The Multi-Point Vehicle Inspection that the service department offers includes a look at the tires, so you get a second opinion on tread while the vehicle is already up on the lift.
If your commute includes a washboard county road, check the tire pressure more often than once a month. Rough roads can shake a slow leak into a flat tire faster than you'd expect.
What are the signs your GMC needs an alignment?
An alignment changes when a wheel hits a pothole, a curb or a hard rut. The result is subtle at first and expensive later, because misaligned wheels scrub tread off the tire edges. Catching it early saves a set.
The truck drifts on a flat road even though you aren't turning the wheel.
The wheel sits off center when the vehicle is driving straight.
One edge of a tire is worn smooth while the rest still has tread.
A shake in the wheel or seat at highway speed can mean an imbalance or a bent wheel.
None of these is a reason to panic, but all of them are reasons to book a visit. If you've recently hit something hard, come in even if the truck feels normal.

How do you choose the right tires for how you really drive?
Start with the job. A truck that tows a loaded trailer wants tires built for load. A weekend vehicle for lake traffic and gravel parking wants something rugged on loose surfaces. A commuter who logs highway miles on Highway 16 wants low noise and steady wear. Few tires do everything equally well, so decide which job matters most.
Tire types also differ, from highway terrain to all terrain and more aggressive off road designs. Highway tires usually ride quieter, while all terrain tires handle dirt and gravel better and may sound louder. Your trim matters too, since AT4 and AT4X trucks come set up for rougher roads.
The Tire Finder tool on the Holiday GMC site narrows the options for your vehicle, so you can browse sizes that fit before you call. Pairing it with a talk to the service advisor keeps you from buying a size that doesn't match your truck.
decide which job matters most
What happens when you bring your GMC in for tires?
Use the Tire Finder or ask the advisor to narrow the choice by use and size.
Schedule online or call (940) 227-4212. Service runs Monday through Friday, 8:00 AM to 6:00 PM.
The team checks tread, pressure and signs of uneven wear as part of the visit.
The new tires go on, and the advisor explains anything the inspection turned up so you can decide what to do next.
GMC Certified Service technicians handle the work. Ask them about balancing and alignment at the same time, since a fresh set deserves a straight start.
You can set up tire service online on the schedule service page or by phone at (940) 227-4212. Service is open Monday through Friday, 8 AM to 6 PM, and closed on weekends. The advisor can help pick a day around your week.
See the service pageTread and Wear
How can I tell if my truck tires are bald?
Look for wear bars in the grooves and for smooth patches across the tread. If they're level with the rubber, it's time for new tires.
Can I replace just one tire?
Sometimes, but matching tread depth across an axle matters, especially on four wheel drive. Ask the advisor before deciding.
Do tires age even if I don't drive much?
Yes, heat and sun harden rubber over time. Check the sidewalls for cracks, even on a vehicle that rarely moves.
Rotation and Pressure
How often should I rotate GMC tires?
Follow the interval in your owner's manual. Pairing it with an oil change keeps it simple.
Where do I find the right tire pressure?
The placard on the driver's door jamb lists it for your vehicle. That number can differ from the one molded into the tire.
Does towing change tire pressure?
It can for some vehicles. The manual explains if a loaded setting applies to yours.
Alignment and Ride
Why does my steering wheel shake at highway speed?
Imbalance, a bent wheel or uneven wear can all cause it. A technician can find the cause quickly.
Should I get an alignment with new tires?
It's a smart habit, because a bad alignment can wear a new set quickly. Ask the advisor at check in.
Will a pothole knock my truck out of alignment?
It can. If the truck pulls or the wheel sits crooked afterward, book a check.
Choosing and Buying
What tires fit my GMC?
Use the Tire Finder tool or call the store with your trim and size. The advisor can confirm what matches.
Are all terrain tires a good idea for my Sierra?
They suit gravel and dirt use well, though they can be louder on pavement. Match them to how you drive.
Does the store service vehicles that aren't GMCs?
The service department states it can service a GMC or any other vehicle. Call ahead to confirm tire availability.
Booking and Hours
Can I schedule tire service online?
Yes, the Schedule Service page lets you pick a time. You can also call the department.
What are the service hours?
Monday through Friday from 8 to 6. The department is closed on Saturday and Sunday.
Where is the service department?
It's at Holiday GMC, 1420 Highway 380 Bypass, Graham, TX 76450.