Questions & Answers for: GMC Envoy misfire code

...service light is blinking. The truck is misfiring Yes the blinking light indicates a misfire is occuring. You will need to have it "scanned" the code(s) will indicate which cylinder(s) are

...code P0128 relates to the coolant sensor. If you are losing coolant or have white smoke out of the exhaust? I would look real close at number one cylinder as having an intake leak or head gasket ...

...code p0455 misfire code p0301 PO-455 EVAP SYSTEM (GROSS LEAK) PO --301 Cylinder #1 Misfire Two separate problems to work on. You will need help on those at a repair shop Do not let them do anything ...

p0300 2006 envoy what would cause this code 0300 P0300 indicates random multiple misfire. The engine computer is detecting a misfire on more than one cylinder. 

code in a 2008 gmc envoy also has codes P0300 and P0305 PO 300---Random Misfires detected ,forget thatPO 305---Cylinder #5 Misfire detectedMay be a bad Ignition CoilDon't throw parts at it,have it

...your engine is misfiring according to your codes ...4 codes 4 problems P0300 - Random Cylinder Misfire DetectedP0301 - Cylinder 1 Misfire DetectedP0302 - P0312 Cylinder X Misfire DetectedP0325 - ...

...Code says misfire on cylinder 2. Want to change coil. The #1 cylinder is the one closest to the radiator. Number 2 is just behind #1. It takes all 4 ingredients to fire a cylinder - Air, Fuel, Spark, ...

...misfire. The P0300 code sets when 2 or more cylinders misfire (can be the same 2 over and over, but it takes at least 2 cylinders to misifre to set that code. The others only take one misfire to set ...

...sensor which is different to an O2 sensor. (has a different function) code p0300 is random/multiple misfires as misfires are from the electrical components you did not pay attention to items like low ...

...code. Don't worry about it. sounds like you need a good mechanic . alternator might have helped the battery problem but what would the accelerator do . coils might help the misfire or new ...