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Found 8 results

  1. Hello all, This is my first post on this forum. Last year I bought a 2009 Chevy Silverado 1500 Ext cab LT with a 5.3l V8 that is Flexfuel capable. Well, I never intended to use flex fuel, but last week, I did so on the spur of the moment. We drove about 3/4 of the tank gone. Then as I was pulling up to the gas station to refill before going out of town for work, my truck's idle began dropping and feeling like it is about to stall out at idle. This happens whether park is engaged or not. I filled up, put some seafoam in my tank and drove about 1.5 hours to work. It continued to idle like this all throughout the trip and even later when I went out and sat at idle while on my break. What could be the problem? I can't imagine that an engine that is meant for flex fuel could get that messed up by it. A side note: we had the transmission rebuilt in January, just in case that makes a different. It has only been a few weeks since last oil change. All fluids were checked and filled up at that time and have been checked a couple of times since.
  2. Question for the off road guys on this forum.. I am looking to up my tire size on my leveled 2018 Z71 Silverado. I put the 2” RC level in and took it off-road and it performed much better than I had expected. However I hate the good year durotracs and want to upgrade my tires and get a bigger size, I was thinking 33s. Now I am just wondering if I put 33s on a 20” rim how that will perform off-road. I know some people say you can run 33s without rubbing but I’m assuming that’s only on road use. Would love to hear some recommendations
  3. Truck Does Not Run Right...Tachometer Bounces...Hesitation from the start...Going up hills is Jumpy...Skips and Bucks, Feels like truck is Misfiring...Transmission shifts are consistently Rough and Random... Dealership confirmed the problem after test driving and they then found TSB #PIP5457C: Surge hesitation Chuggle Misfire Feeling With A Light Tip In - (Feb 10, 2017) which they believe match's the problem. The Dealership says GMC is aware of this (TSB #PIP5457C) the cause is unknown at this time. Do Not Know How Long It Could Take To Get A Fix. I called GMC customer assistance and requested a replacement or buyback they opened up a case number for me. They next day GMC customer assistance denied any kind of replacement, trade assistance, or buy back. Closed my case because they do not know what the cause is at this time and do not have a fix for the problem. I was told I must drive the truck (AS IS) until such time a fix is available. They also encouraged me to exercise the Lemon Laws in my state if I wished to pursue a replacement or a buy back. Extremely unhappy with my first GMC Truck and that's a shame because it’s a beautiful truck It just happens to be a Lemon that runs like Crap... Just keep driving (AS IS) is not what I paid for...I hope someone else has any insight to how to fix this problem. I hope others will post there concerns as well so we can get these trucks fixed or replaced...
  4. Hello I am having an issue keeping my truck idling on its own. Here is the history on the truck. 2000 GMC Sierra 1500 4.8L automatic with manual 4x4. Bought from auction as a flood vehicle. Water was in the engine in the oil and in the cylinders. Got that all out and new plugs, wires, new fuel, oil and filter. The truck runs now but it will not idle on its own. If you give it just a slight amount of throttle it will run. If you let off the gas it dies. I checked the throttle body and cleaned it. Clean air filter. The fuel pump primes 50psi but I haven't checked it while running. Any thoughts as to why it wont idle on its own? It will rev all the way to redline and you can drive it around a little if you two foot it. The engine sounds healthy but wont stay running.
  5. I have a 2000 silverado 2wd with a 4l60e had the trans rebuilt like 20k who and started having a rough shift in 1-2, 2-3 read up on it so I replaced the tcc valve with the new oversized one now it only did it after I would drive for about 30min read a little more and saw that the tcc solenoid is a normal problem so I replaced it and now it only shifts hard going into 1-2 anyone have any ideas not sure what else to do or to check but shifts good until i drive for over 30 min
  6. Hello! Yesterday I acquired a 2003 Silverado with 140,000 miles on the engine. Today I was going over the truck and I washed out the bottom very thoroughly. Got a little bit of rust dust and some chips of undercoating off. I really went to town cleaning the underside. After this I took the truck for a little drive and started to get a flashing check engine light. The truck seemed to drive fine at speed but when I pulled off onto a side street it felt like it was misfiring a little bit, rough idle. I turned off the truck and turned it back on and the flashing CEL returned after a few seconds. I started to head back home and after about 30 seconds the light went away. I have driven it a few times since then and nothing has come back. I had nothing before washing out the bottom. What could be the cause of this? Thanks for all replies!
  7. Any help would be appreciated. I have a 2009 Silverado LS 4.8 V8 149,000kms (92,500 mi). This truck just started to idle a little rough or (rumble) while sitting at red light. it will do this in Drive but not neutral or park. If i rev it up its smooth until around 1400rpm then can hear and feel slight rumble. Can also hear rumble as i turn key off just as it quits. NO codes on truck checked with hand held scanner. Everyone online kept pointing me to EVAP issues. Ran emissions readiness test everything was clear except EVAP so i put in GM Vapor Canister Purge Valve / Solenoid #12597567. All items were clear! great right? not so fast, I cleared my scanner only to find out I shouldn't have because I now am having to run a bunch of "drive cycles" to reset everything. I have done this multiple times everything cleared up except EVAP which it did before and the truck still rumbles. Any ideas? is it EVAP or something different altogether? Thanks Stacy Edmonton,Alberta
  8. Here is my 2014 Sierra SLT Z71 crew cab cobalt blue metallic 5.3L. So far I have leveled it with a rough country 2" kit, 20% tints, tonneau cover, splash guards, and most recently swapped out my standard grille for the All-Terrain grille. I had the grille custom painted to match the truck. Just got the grille a few days ago and will have better pictures soon.
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