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Questions & Answers
Code 300 means you have a random miss that is not serious enough to pick one cylinder. The computer measures RPM on each cylinder as the plug fires. So it is not that a cylinder is not firing but rather that it is not producing enough power.
Other causes are vac leaks and lack of fuel.
The code is p0442
this is a small leak in the evaporative emission control system.Most common cause is a loose or faulty gas cap but not always, Sometimes the check valve in the gas cap doesn't seat properly allowing the gas tank pressure to bleed down. The EVAP system needs to see a positive pressure in the tank.
on Jun 27, 2019
M y radio stopped working on my 2004 trail blazer
The 2004 Trailblazer has two fuse panels, one in the under hood and one under the middle row seats. The radio fuse is marked RADIO fuse # 41 and is a 15 amp fuse located in the rear fuse panel. To access the rear fuse panel flip the seat behind the driver to the upright position, under it you can see the fuse panel and a diagram should be on the under side of the cover.
Good luck and hope this helps.
on Jun 02, 2019
How do I reset the PCM on a 04 chevy trailblazer
I disconnected the battery, removed fuses 10 and 28 adjacent the battery and waited twenty minutes. I then hooked the battery back up reinstalled the fuses and started the vehicle. The battery light went out and the battery not charging message did not come back on. I then went for a test drive. I had a celebratory adult beverage because it worked.
on May 22, 2019
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