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

11,540

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

Your Answer

Add photo

Related Questions

Search Chevrolet Silverado 1500 Questions

Chevrolet Silverado 1500 Experts

#1 John Carson
John Carson
Reputation 2,410
#2 Rowefast
Rowefast
Reputation 1,950
#3 tenspeed
tenspeed
Reputation 1,650
View All

Related Models For Sale

Used GMC Sierra 1500
778 Great Deals out of 68,743 listings starting at $1,800
Used Ford F-150
2,144 Great Deals out of 193,917 listings starting at $290
Used Dodge Ram 1500
418 Great Deals out of 10,969 listings starting at $1,000
Used Chevrolet Silverado 2500HD
313 Great Deals out of 28,645 listings starting at $1,900
Used Toyota Tundra
446 Great Deals out of 34,805 listings starting at $2,500
Used Toyota Tacoma
551 Great Deals out of 43,266 listings starting at $1,995
Used Chevrolet Tahoe
581 Great Deals out of 33,059 listings starting at $1,500
Used Chevrolet Colorado
247 Great Deals out of 27,664 listings starting at $1,000
Used Ford F-250 Super Duty
333 Great Deals out of 44,557 listings starting at $1,450
Used Chevrolet Silverado 2500
11 Great Deals out of 250 listings starting at $3,495
Used Chevrolet Silverado 1500HD
11 Great Deals out of 280 listings starting at $3,995
Used Dodge Charger
523 Great Deals out of 28,800 listings starting at $2,500
Used Nissan Titan
175 Great Deals out of 19,030 listings starting at $3,995

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.