Battery weak, check engine soon light comes on while driving. Replace fuel filter. 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.

- Pacoima, CA, USA

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.

- Cooper City, FL, USA

The engine developed a skip while on vacation. I brought it to a garage, the technician diagnosed the problem as clogged fuel injectors. He showed me some clogged injectors from another 2000 Silverado that he had repaired the previous week. He claimed that rust was in the gas tank, and the fuel pump "sandblasted" the rust through the fuel filter and into the fuel injectors. It turns out that my truck had the same problem. He replaced the fuel injectors (all 8) and cleaned the fuel rails. He installed a new fuel filter. This cost over $1,100. After rturning from vacation, I thought I should find the cause of the rust in the fuel system. I took the gas tank out and discovered the plastic gas tank was full of rust. I tipped the el pump assembly upside down, and a great quantity of rusty gasoline poured out. I took this assembly apart and discovered that the fuel pump motor itself (a small steel canister device) was a ball of rust. The pump evidently is not galvanized or plated. The pump motor is the only steel component in the tank. The tank itself cannot rust. The rust from the pump was forced into the fuel system, causing the clogged fuel injectors. The price of the pump, not counting labor, is $409.

- Sterling, MA, USA