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lopez1985 12-31-2006, 01:15 AM well it only happens when i come to a stop sign or leave it idle but the white smoke starts pouring out some times a little bit and sometimes its alot. and everything is fine im pretty sure i change the oil regular and it runs great but i just dont know what the smoke is all about? can someone tell me what this is please thanks brandon! RickDLance 12-31-2006, 01:17 AM You most likely have at least one bad injector. :( Time to check your balance rates. Fill out you signature in your user cp with your truck info and mods ao we can help you better.;) lopez1985 12-31-2006, 01:19 AM how do i test the balance rates? should i just take it in and have them test the injectors? yellowroket 12-31-2006, 01:29 AM You need a scan tool, if its an injector there is a 200K warranty on them and gm will check the balance rates and hopefully replace all 8 for you or just the one thats bad it depends on which dealer you take it to. Im on my 3rd set at 92K. RickDLance 12-31-2006, 01:39 AM Depends on what year truck he has as to the warranty. Thats why I suggested filling out his signature. If it is under warranty take it in ASAP. A bad injector can also fill the crankcase with diesel. lopez1985 12-31-2006, 01:49 AM its a 2003 i have 103 000 on it which isnt alot but sometimes it smokes so bad RickDLance 12-31-2006, 01:50 AM Take it in. IIRC the 03 is now under the 200,000 mile warranty.;) yellowroket 12-31-2006, 01:55 AM Depends on what year truck he has as to the warranty. Thats why I suggested filling out his signature. If it is under warranty take it in ASAP. A bad injector can also fill the crankcase with diesel. good point sorry my mouth is quicker than my brain:D lopez1985 12-31-2006, 03:02 AM do you guys think it will make a difference if its straight piped? do you think they will give me **** over it? when i take it in? yellowroket 12-31-2006, 03:09 AM I wouldnt worry about the straight pipe, if you dont mention it they probably wouldnt even realize. If you have a tuner though get it out!!! They can refuse to warranty anything if its there. AKDZL 12-31-2006, 03:34 AM My truck has been sounding funny when I start it, and when I get on the gas and when I shut it off. It does blow some white smoke, but not the all the time. I think only when its getting warm. This sound is a rumbling sound when I shut it off. When I get on the gas, over 50 or so, it is a loud knocking sound. Almost like when cranshaft bearings are going out on a gas engine. Never heard all until the snow blizzard we just had and the engine compartment was full of snow. But it is all melted out. Does this sound like a injector problem, or me getting to paranoid? tmougeotte 12-31-2006, 03:41 AM Maybe some moisture got into some sensors? Let her dry out and do a check of connections. just me $.02 | ||