Close

GMC 2500 Pickup Rough Idle

Learn if it's a simple fix or time to seek out a trusted technician.

What are common reasons my GMC 2500 Pickup has a rough idle?

While there are a variety of reasons your GMC 2500 Pickup has a rough idle, the most common 3 are a vacuum leak, an issue with the spark plugs, or a problem with the ignition coil.
34%
of the time it's
Vacuum Leak
21%
of the time it's
Spark Plugs
15%
of the time it's
Ignition Coil

Get your GMC issue diagnosed by a professional

Find a high quality auto repair shop or dealer near you
x

Related GMC 2500 Pickup Questions

See what others are asking about their GMC 2500 Pickup. Get answers from RepairPal's community of auto experts and enthusiasts.
Cold or hot it happens.it only has 115000 miles on it.had it hooked up to a code reader and it says tps but it's bran...
Change my intake manifold and now my truck does start, it just struggling to start. is it my timing?how do you fix that?
GMC 2500 Pickup Repairs and Prices
All costs based on RepairPal Fair Price Estimate™ averages. Actual prices may change depending on final diagnosis.

GMC 2500 Pickup Rough Idle Repair Symptoms

A failing ignition coil will create misfires in the engine, and lead to hesitation, extreme power loss, engine stalling, poor fuel mileage, and illumination of the check engine ...Read More
As we discussed, spark plugs are necessary for any gasoline engine to run. When they fail, the engine is in a constant state of attempting to ignite air and fuel, but cannot. Th...Read More