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Found 4 results

  1. I have a 2000 gmc 1500 with the 5.3. I ordered a egr block-off plate, and exhaust manifold and intake manifold plugs from route 66 mods. I've heard of people deleting the egr value of gasoline engines. I'm not doing long tube headers, its my truck that drive every day and pull a trailer with and I'm gonna get big wheels and put a SS badge on it that just looks stupid. I looked on the other forums about deleting the egr on the 5.3 and all there is a bunch of guys arguing about what to do that haven't even done it them selves. I don't know if I'll have to have it re-tuned or just clear the code? I hope someone on this forum has done it and knows what to do.
  2. I am looking to buy a 99 sierra vortecmax 4x4, buuuut the guy I'm buying it from has disconnected the front axle and LOWERED the truck. I can get the truck for a pretty good deal, although I am interested in lifting it back up and using the 4wd. Does anyone for see this being a huge pain or a risk worth taking? and a little info on what i may be getting into would be great... thanks in advance!
  3. I have a 99 Silverado with over 200,000 miles. for about 75,000 miles the truck has vibrated like the tires out of balance. I have had the tires balanced every month and the problem is still there. It starts about 35-40 mph and the faster I go the worst it is. I live in the desert so it cant be snow or anything like that. I do have oversize tires on it and a 4" suspension lift on it also, but it is a 2 X4. My tires are not wearing even but I took the truck to the dealer for an alignment. I have no idea what is can be.
  4. This is my first post so I am not sure if this is where I need to be posting this but here goes anyways. Bought 1999 Silverado 5.3 used last year everything worked great, just some minor issues that I fixed on my own (brakes, rotors, brake lines). I am no mechanic, just a guy with a garage and a few tools I would like to add. Currently it has 225,xxx miles on it and is my daily driver. Here are the problems I have had in the past few weeks. Idles rough, worse when engine is cold but otherwise always there. Misfires slightly only when under a load but ses does flash, only flashes after the engine is on and in drive at same exact time every morning and only once in a while in the afternoon. SES light was on so I had it checked pulled up misfire on cylinder 7 and p0300 code as well as the code for the EVAP and passenger side o2 sensor. This is what I have done so far, Replaced Fuel pump, fuel filter, fuel pressure regulator, all spark plugs, all plug wires, #7 cylinder coil pack, local mechanic replaced a part on top of the engine towards the front, it has a connector running to it, not sure what it is or called. Ran lucas injector cleaner thru it, and seaform also, no change. Cleaned the MAF sensor, retightened all my vacuum hoses and done a self vacuum leak test while engine was running, no change in idle and the misfire is still there. Also my temp gauge is running above normal but not overheating either when I have my a/c on or a/c off and drive for more than 45 min straight, unless it is in the morning when the air is cooler outside then the temp stays normal. Its NOT leaking antifreeze or oil. replaced thermostat twice, not sure why. What do I do next? Sorry for the long post but im sure I also forgot to mention something. If I think of it I will repost.
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