Loss in fuel tank pressure. Structural stressing causing leaks at tank, fuel pump module connector and fuel supply hose. Dtc codes P0446 / P0451. Evap leak located in top tank port and associated direct connection secondary cracking of the plastic fuel supply line at tank top. Tank cracked at port. Cracking due to stress from normal driving vibrations as these ares are protected from road hazards.resulting gas leak will cover tank and metal shroud. Fire hazard from leaking gas.

- Phoenix, AZ, USA

Purchased used vehicle from dealer (daniels Chevrolet, Buick, GMC trucks, Inc. Swainsboro, ga) and after sale discovered emission system was disabled and dpf (diesel particulate filter) had been physically removed; probably by previous owner.

- Beaufort, SC, USA

Fuel leaking/spraying out of the rear auxiliary fuel tank. I noticed a strong smell of raw gasoline coming from the rear of the vehicle. Upon further inspection I observed the raw fuel was coming out of the fuel module connecting fuel line. The metal fuel line sits in a well of the rear tank and was completely covered with dirt/moisture/raw fuel. The tank was removed and we immediately noticed that the metal portion of the fuel module metal piping was rusted thru and that was where the raw fuel was being sprayed/pooling in the well area. The design of the fuel tank & module creates a perfect location for dirt/moisture to accumulate. Any type of ignition source could have caused a catastrophic fire and possible explosion. The removed original fuel module was in perfect working condition except for the rotted metal portion of the module. I replaced the rotted fuel module with a new GM oem fuel module. This new module has the same exact construction as the original part. Since there is no possible way to clean or keep clean the well area of the tank, I can only assume the new oem part will deteriorate in the same manner. The vehicle had about 34000 miles on it when the condition occurred. Since it is out of warranty the new module costs for labor and parts was in excess of $1000. In conclusion I think this matter should be investigated further because it is obviously a safety hazard involving raw fuel being ejected from the fuel tank under pressure while the pump is running.

- Roaring Brook Township, PA, USA

Wife drove truck to the store it was raining hard this day. Came out and truck was dead. Jumped the truck and took it home.looked at the battery. Still had factory battery. Replaced the battery. Next morning the truck was dead. Jumped the new battery truck started. Turned truck off /could hear something running in the fuel tank. Found out that there were problems with the fuel module above the spare tire. Called the dealership for the third time. Creg smith auto group. Galion Ohio 44833. Could not get the service manager on the phone. Left him a voice mail. Never returned my call. Next day called for service manager. They could not find him in the building. Told a man on the other end of the phone everything that was going on. Something was draining my battery and something was running.24/7. man told me he would call me back. Never did. Left for dealership with the truck. Truck stopped on me in middle of the road had it towed home. Never made it to the dealership. I am very upset with everything now. I turned the key and the truck stuck on was still trying to start after I turned key off.. was afraid of the fuel system and electrical system together..one spark could blow me up. Now truck will not start at all. Please help me. I was told by dealer that I had to come to a dealer.all parts had to be reprogrammed for the truck. I have no money ! only owe 2,400 and truck is paid off please help me.

- Mansfield , OH, USA

The contact owns a 2009 Chevrolet Silverado. The contact stated that while driving at various speeds, the engine stalled without warning. The failure recurred numerous times. The contact diagnosed that the fuel system control module needed to be replaced. The vehicle was repaired. The manufacturer was not made aware of the failure. The failure mileage was 56,000.

- Avoca, MI, USA

Well maintained vehicle with less that 78K miles and transmission failing. GM should be forced to step up and pay for the repairs. Vehicle is a lemon. Have replaced and fixed multiple other issues. 3 door lock actuators gone out...2 times fixed fuel system vapor canister...passenger window switch failed...cruise not working...

- Huntsville, TX, USA

On three separate occasions the fuel gauge on my 2009 Silverado read full, when it was actually near empty. The first time was driving through the desert on hwy 395 in California. The outside temperature was over 100 degrees. I knew I had driven too far for the gauge the be correct. There are very few gas stations on that road. The second time it happened was on the same road a year later driving through the desert. I finally realized the problem was the heat, when it happened at my home town in jamul, ca when it was over 100 degrees. The low fuel warning never came on and the gauge said full. I turned the truck on and off and it still said full. The gauge corrected after I added fuel. I inquired at the dealer if there were any recalls and they said there was not.

- Jamul, CA, USA