The GMC AT is a vehicle built from 1985 to 1995. Too new for a verdict, since complaints and recalls take years to accumulate — and the year you pick matters far more than the badge (best and worst years →).
What the AT is
The GMC AT is a vehicle that GMC built from 1985 to 1995 — 11 model years. Its closest siblings in the GMC range: Sierra, Acadia, Terrain.
GMC AT tire size, oil type & owner specs
The fitment AT owners look up most — tires, wheels, oil and batteries. Exact wheel and tire sizes decode from your VIN or the driver's door-jamb placard; the universal items are listed below.
Exact tire, wheel, oil grade, capacity and battery group are added per trim and model year — decode your VIN above for the factory fitment. Universal items shown as-is.
What engines does the GMC AT have? Power & range
Powertrain data warming… reload in a moment.
The AT by the numbers
What the federal and market records say about the GMC AT. Each line opens the full breakdown by year.
| Topic | AT | Detail |
|---|---|---|
| Reliability | Not yet rated | Best and worst years |
Frequently asked questions
What kind of car is the GMC AT?
The AT is a vehicle, built from 1985 to 1995.
What is the GMC AT warranty?
New models carry 3 years / 36,000 miles basic cover and 5 years / 60,000 miles on the powertrain. Worth knowing: across our complaint records the typical car reaches the halfway point of its faults at five years, so most repairs land after the basic warranty ends.
Is the AT reliable?
The honest answer depends on the year far more than the model — see the best and worst years, and when this car starts to break.
How do I check a specific AT?
This page describes the model; it cannot tell you whether that car has an open recall or a branded title. Run its VIN against the records — free, and matched to the exact production run.
More in GMC
| Model | Years | Recalls | Best MPG | ForCar score |
|---|---|---|---|---|
| GMC Sierra | 1989–2026 | 419 | 26 mpg | 4.0/5 |
| GMC Acadia | 2007–2026 | 42 | 25 mpg | 4.5/5 |
| GMC Terrain | 2009–2026 | 45 | 32 mpg | 4.5/5 |
| GMC Yukon | 1992–2026 | 162 | 23 mpg | 4.5/5 |
| GMC Canyon | 2004–2026 | 84 | 25 mpg | 4.0/5 |
| GMC Yukon XL | 1995–2026 | 91 | 23 mpg | 4.5/5 |