The 2017 GMC Acadia uses six spark plugs.
Engine configuration and ignition layout
The Acadia's 2017 model year relies on a 3.6-liter V6 EcoTec3 engine. In this design, each cylinder has its own spark plug, and the ignition system operates with a coil-on-plug setup—one ignition coil per cylinder—for a total of six spark plugs and six coils.
Maintenance implications
When replacing the plugs, owners should use the recommended iridium or platinum-tipped plugs specified by GM. With modern, long-life plugs, replacement intervals can approach 100,000 miles under typical driving conditions, though actual intervals depend on plug type and driving style. If you notice symptoms such as misfires, rough idle, or reduced fuel economy, a plug/coils inspection is advisable.
Summary: The 2017 GMC Acadia takes six spark plugs, one for each of its six cylinders, with a coil-on-plug ignition system. Use OEM-recommended plugs and follow GM's maintenance guidelines for replacement intervals and torque specifications.
Which Acadia year to stay away from?
Q: Which GMC Acadia years should be avoided? A: Potential buyers should avoid the GMC Acadia from the first generation, particularly the 2008 model year, and from the second generation, the 2012 and 2013 model years are not recommended.
How much does it cost to replace spark plugs on a 2017 GMC Acadia?
$409 - $479. “Dealer” refers to service centers that specialize in one or two makes and sell those vehicles.
Does 4 cylinders mean 4 spark plugs?
There is one spark plug per cylinder, so if you drive a vehicle with a four-cylinder engine, your engine has four spark plugs. Just one bad spark plug can cause problems, and if all of them go bad, your engine cannot run.
What kills spark plugs quickly?
Pre-ignition can lead to heat building up in the combustion chamber causing the spark plugs to fail. In addition, if the cooling system isn't functioning correctly, it can cause the engine and spark plugs to overheat. This overheating can lead to the spark plug's electrode wearing out faster.