throttle body help

Hi Trailvoy.com family. I have a 2007 Trailblazer with the 6 cylinder 4.2 engine. The vehicle is 2WD and has just over 170,000 miles. Last Monday (3/26/18) the vehicle ran fine. I went to use the vehicle on last Thursday (3/29/18) and that is when the problems began. I was able to use a...

Need suggestions! I have cleaned throttle body and replaced camshaft sensor (it was throwing out code p0340) but it still shudders and stalls out, especially when braking or accelerating from a dead stop. Is the throttle body bad? Suggestions needed. I also reset the computer after cleaning the...

Just wondering if anyone has replaced a throttle body on a GMC Envoy? I found the replacement unit several places and they all say "without throttle actuator." Is the actuator separate from the throttle body on these engines that it's sold this way? Do I need to buy the actuator as well? Any...

Hi, I want to remove and clean my throttle body on a '04 - 4.2L Trailblazer. I read that there is a gasket, 1- do I use the same one or do I HAVE TO GET A NEW ONE, 2- do I need to get a sealant to use before putting it back on, 3- do I need to put thread sealant on the bolts. I am cleaning it...