2006 GMC Sierra with the 4.3. No power, had to be towed, only code is 0300 random misfire.

Asked by Oct 09, 2014 at 05:43 PM about the 2006 Chevrolet Silverado 1500 Work Truck 4WD

Question type: Maintenance & Repair

I was going down the interstate at about 72 mph and all was well. Then the truck
started loosing power. By the time I got it off the interstate (about 1 mile) Foot to the
floor, doing about 15 mph. Black smoke coming out the tail pipe. I had to have it towed.
So far I've changed cap rotor, wires, coil, air filter, two O2 senors, and the ECT sensor..
Still the same problem. Idles rough, but starts right up. Fuel pressure 55 with engine
off, 62 while running, doesn't lose pressure when shut off (goes down a little to 53
when off). What would cause this problem?

1 Answer

13,730

plugged Catalytic converter? plugged fuel filter? just throwin it out there

Your Answer:

Chevrolet Silverado 1500 Experts

  • #1
    John Carson
    Reputation
    3,480
  • #2
    Rowefast
    Reputation
    2,410
  • #3
    Andrew Olsen
    Reputation
    2,180
View All

Related Models For Sale

Used GMC Sierra 1500
708 Great Deals out of 61,161 listings starting at $1,395
Used Ford F-150
2,239 Great Deals out of 210,391 listings starting at $1,300
Used Chevrolet Silverado 2500HD
387 Great Deals out of 30,272 listings starting at $2,750
Used Dodge Ram 1500
338 Great Deals out of 9,379 listings starting at $1,500
Used Toyota Tundra
472 Great Deals out of 39,682 listings starting at $2,700
Used Toyota Tacoma
421 Great Deals out of 48,132 listings starting at $2,994
Used Chevrolet Tahoe
523 Great Deals out of 37,969 listings starting at $1,250
Used Chevrolet Colorado
264 Great Deals out of 40,467 listings starting at $1,999
Used Ford F-250 Super Duty
499 Great Deals out of 40,651 listings starting at $2,800
Used GMC Sierra 2500HD
151 Great Deals out of 17,475 listings starting at $2,999
Used Dodge Charger
280 Great Deals out of 32,271 listings starting at $1,850
Used Ford Mustang
273 Great Deals out of 37,795 listings starting at $1,350

Used Cars For Sale

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.