2000 GMC Sierra

http://Mercedes-Benz.autoboardz.com/2000-GMC-Sierra-ftopict218114.html (2000 GMC Sierra)
I know this is a Dodge Site and i drive a Dodge Ram 3500 myself My friend has a 2000 GMC Sierra 1500. The exhaust is out problem, he has headers and Magnaflow exhaust. The Y pipe and the cats are our problem. Their are O2 Sensors before and after the cats. I was wondering if we could cut th..
« Being that it is a 2000, I would leave them alone unless there is a problem with them, you will not gain enough to justify the costs and headaches. If you cut them out and straight pipe it, you wil.. »
« the cats are a problem, but thanks for that web site its just like dtr i set him up on that »
« By problem I meant (I am sure you know) that they are clogged, burn out, etc... I would suggest he talk with local shops (other than dealerships or Midas) as they will be able to tell him some more.. »

http://Mercedes-Benz.autoboardz.com/2000-GMC-Sierra-ftopict218112.html (2000 GMC Sierra)
My friend has a 2000 GMC Sierra 1500. The exhaust is our problem, he has headers and Magnaflow exhaust. The Y pipe and the cats are our problem. Their are O2 Sensors before and after the cats. I was wondering if we could cut the cats out and weld in pipe the same diameter of the rest of the ex..
« leave it alone. while we can all still breathe. the factory cats flow more than good enough for todays puny engines. -- Steve Barker »
« There is no need to remove the cats, or spend money on "hi flow" cats, if your factory cats are still good. The factory cats flow extremely well and have some extra flow capacity, so even if you .. »

http://Mercedes-Benz.autoboardz.com/HELP-needed-GMC-transmission-problem-ftopict248183.html (HELP needed with GMC transmission problem)
My 2000 Sierra just started having a problem with a server jump from 1st to 2nd gear. When starting from a dead stop and my automatic goes from 1st to 2nd on take-off, I get a very bad jumping jerk of the truck. All other gears are good. To get around the problem I began starting off in 2nd gear f..
« Have you tried adding a small amount of brake fluid to the transmission fluid? It will smooth out rough automatic shifting. »
« I think that will smooth out his wallet as well..... »
« Personally I prefer buttermilk. »

http://Mercedes-Benz.autoboardz.com/Check-4X4-ftopict246614.html (Check 4X4)
I have a 2000 gmc sierra 5.3 4X4(electronic push button).Recently the check FWD has indicated on the message system.The check FWD has started to come on after the truck has been diven 10 to 20 min.Sometimes when I put the truck in 4X4 it will not come out until I shut the truck off and restart.All..
« For starters, remove the TCM fuse for several minutes to clear Tcase encoders motor control modules memory and then try it again. Those push button 4x4 systems are trouble prone with age and usually.. »