2000 Chevrolet Silverado: misfire or rough idle

Filed Nov 5, 2004 · Acceleration, Fuel system · 48,860 miles · CA

Battery weak, check engine soon light comes on while driving. Replace fuel filter. *bf the vehicle was taken tot he dealer who scanned the PCM and found dtc for engine misfire and injectors not dropping fuel pressure when commanded. Injectors 2 and 6 were cleaned. The cruise control light flashed on and off although the cruise control was not engaged. The dealer was unable to duplicate the problem.

Filed Oct 24, 2003 · Engine, Fuel system · FL

Ongoing problem for rough idle, from the time the vehicle was purchased new. Several dealers told me it was normal, another said it was problem with the 5.3 liter; however, nothing to worry about. Fuel injectors have been cleaned several times. Now vehicle out of warranty. After vehicle is up to operating temperature and is shut off and remains for approximately half hour, upon restarting, vehicle "tumbles." I contacted chevrolet customer service who provided me with an extended warranty on the engine and they have "washed there hands" of any other problems they may occur. My complaint is the rough idle has always been present, and now the "tumbling" is being caused as a result of the prior problem. This vehicle has been in service numerous times and the problem has not been diagnosed by chevrolet. Do any service bulletins exist for a similar problem as this? File #1-89542103 & 1-89542103. Automatic transmission was another issue that was addressed while under warranty. Now, tcc valve is sticking causing a delayed gear engagement. Again, sorry but your vehicle is out of warranty.

Filed Apr 28, 2003 · Fuel system · WI

My truck just stopped running, it started right back up, but what happened??? Now at times it turns over alot before it starts and it rough idles! What is the problem??? I have heard that it is probably a fuel regulator--very expensive repair on alot of silverados-- I think gm should replace these for free because there is alot of these with this same problem.

Filed Jan 8, 2001 · Acceleration, Transmission · OH

Vehicle experiencing rough idle. Nlm

Filed Aug 3, 2000 · Engine · CA

Engine missing/rough idle. Above 4500 ft elev and above 65mph = 19.6mpg. Below 4500 ft elev and under 65pmh = 16.6mph. Emissions cannot be working! Fuel = throttle sticks from idle and when accelerating from coasting.

Filed Apr 10, 2000 · Acceleration, Suspension · NY

Vibrates at 5 MPH/1500 RPM. Vibration is more severe when towing. In shop 3 times, nothing resolved. Rough idle and vibration since truck was delivered. Now has 2100 mile on it, and still same condition.

Filed Dec 17, 1999 · Acceleration, Engine · CA

Rough idle, exhaust burning black, smell of gasoline in oil

Filed Oct 17, 1999 · Acceleration, Suspension · KY

Rough idle and vehicle shakes and vibrates at highway speeds---steering wheel shakes violently when going over a bump in road.