2010 Chevy Tahoe trouble codes

Tiny
NUKCURV51
  • MEMBER
  • 2010 CHEVROLET TAHOE
  • V8
  • 2WD
  • AUTOMATIC
  • 1,800 MILES
I just installed E3 spark plugs in my 2010 tahoe 5.3 motor. The plugs where the only change that I made. I turned the car on and it ran rough. The DIC gave me service stabilitrack and service traction control. I got trouble codes P0300 and P3400 when I plugged my reader into the obd port. Which is miss fire and and bank 1 shutdown I believe. The idle is running really rough. I pulled and reinstalled all the plugs torquing to specs. What would cause the problem of miss fire after just changing the plugs
Saturday, July 24th, 2010 AT 4:05 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
What is it misfiring prior to you replacing the plugs? If not could be the plug type or the gap, loose contact between the plug and wire.

You sure this P3400 is not P0340 that relates to a camshaft sensor malfunction
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Saturday, July 24th, 2010 AT 4:47 AM

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