Can a spark plug go bad on a GMC Sierra?
GMC Sierra Spark Plugs. Spark Plug Wires – On most modern engines, the plug wires are not nearly as long as they once were, but they can still go bad. Here’s how to tell if your plug wires are bad (video). Coil Packs – Coil packs rarely go bad, but when they do, they can certainly cause P0306 in your GMC Sierra.
What is the misfire code on a GMC Sierra?
GMC Sierra P0306 Definition. P0306 is a cylinder specific misfire code, which means that Cylinder 6 is misfiring and causing it. An important thing to understand when finding the location of Cylinder 6 is that it’s going to be the sixth cylinder in the firing order.
What’s the cylinder number on my Silverado Sierra?
When I restarted the truck the problem came back, but this time the engine was shaking bad enough to shake the whole truck, along with the CEL and Stabiltrak being lit. Drove back home and checked the code and it was PO306 Misfire cylinder #6. Checked the spark plug wire and it felt secure.
What kind of cylinder is a Silverado misfire?
Drove back home and checked the code and it was PO306 Misfire cylinder #6. Checked the spark plug wire and it felt secure. Only thing I could find on here were a few low miles 2014’s with a stuck lifter that required a complete top half rebuild and another with a completely new motor.
Why is my GMC Sierra 1500 engine not working?
Engine miss in cylinder one. Dealer replaced valve covers and baffle in oil pan to redirect oil flow. Claimed this is causing oil in cylinder one to fowl spark plugs. GM suggested replacement of the pistons and rings but once the head was removed there was substantial scoring of the cylinder walls. At that point GM agreed to replace the engine.
What kind of engine does a GMC Sierra 1500 have?
The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance. 355-horsepower 5.3L V8 8-speed shiftable automatic 4WD w/low range Gas Pedal Flex. When pressing on accelerator, the pedal would creak and pop. A new pedal bracket was installed which resolved the issue.
How many miles does a GMC Sierra 1500 take?
Consumption test started at 10,700 miles. Completed oil consumption test with GM dealer, Test showed engine using half a qt in 6,400 miles. Engine considered broken in at this mileage. I am satisfied at this time.
Can a lack of Spark cause a misfire?
because the cool thing is that no matter if you have misfire codes or No Codes at all, the core cause of the misfire is a lack of spark, or fuel or air (think engine mechanical problem such as: vacuum leaks, low compression, etc).