firervfd37 Posted December 24, 2011 Report Share Posted December 24, 2011 So I am driving to NC right now and my overdrive does not always kick on. Sometimes I am driving and I feel the rpms drop as it goes back into overdrive. Any thoughts on why? Help haha Quote Link to comment Share on other sites More sharing options...
koopatroopa Posted December 24, 2011 Report Share Posted December 24, 2011 Well if you driving right now and posting on the internet your doing something illegal or pulled over for bathroom break How many miles you have on your tranny? Would you have say you are an aggressive driver? Is this the first time and try shifting done to third and then back up I have seen that fix it sometimes Quote Link to comment Share on other sites More sharing options...
Silverad0 SS Posted December 24, 2011 Report Share Posted December 24, 2011 Well if you driving right now and posting on the internet your doing something illegal or pulled over for bathroom break LMAO Quote Link to comment Share on other sites More sharing options...
gmJake Posted December 26, 2011 Report Share Posted December 26, 2011 Fluid and filter change time. But not while you're a driving. Quote Link to comment Share on other sites More sharing options...
Bad Bowtie Posted December 26, 2011 Report Share Posted December 26, 2011 RPM's are supposed to drop when it goes into O/D. Quote Link to comment Share on other sites More sharing options...
chpspecial Posted December 27, 2011 Report Share Posted December 27, 2011 If second gear engages with no problem and the trans doesn't have any other problems... Then three might be a problem with your 4th gear servo... Is it stock or aftermarket. sent from my thunderbolt Quote Link to comment Share on other sites More sharing options...
firervfd37 Posted January 14, 2012 Author Report Share Posted January 14, 2012 Everything with the tranny is stock. I was also thinking could it be the torque converter? Quote Link to comment Share on other sites More sharing options...
zippy Posted January 15, 2012 Report Share Posted January 15, 2012 I'd have to ask even though it may seem silly, are you not getting overdrive or not getting tcc lockup. Most of the time I see a post of this type it turns out to be an issue with no converter lockup. If you are getting a check engine light that can keep the tcc off. If you have a missfire at all that the computer see's it can keep the tcc off. If you had a mail order pcm done and didn't use your original pcm and then didn't have the crankshaft variation learn performed you can also have tcc issue's since the pcm can pick up a missfire condition that isn't actually occuring. Just some stuff to check. Quote Link to comment Share on other sites More sharing options...
firervfd37 Posted January 15, 2012 Author Report Share Posted January 15, 2012 I am not getting any check engine lights. Today again I was driving about 73 mph and I hear the engines rpms raise some. So I observed that the RPM's were around 2300 when they are usually around 2000 when at 73mph and in overdrive. I gave it a little push on the gas pedal and the rpms climbed alot faster then they would if it was in overdrive. Then the truck went back into what I believe is OD. I know every once in a while when I would start my truck it would jerk a tiny bit like it was stuck in gear or something. I am not very mechanic wise as you can see by my posts. So could it be the TC? or if anyone is in the Salisbury, MD area and wants to go for a ride and see for yourself? Quote Link to comment Share on other sites More sharing options...
firervfd37 Posted February 9, 2012 Author Report Share Posted February 9, 2012 Finally got the truck looked at and of course they could not reproduce the problem. The mechanic was cool and stated that it sounds like the torque converter could be going bad. Anyone know a decent shop on the eastern shore of Maryland or Delaware to do the work? And anyone recommend a decent TC that wont break my account? Quote Link to comment Share on other sites More sharing options...
ChevroletCustomerService Posted February 10, 2012 Report Share Posted February 10, 2012 Finally got the truck looked at and of course they could not reproduce the problem. The mechanic was cool and stated that it sounds like the torque converter could be going bad. Anyone know a decent shop on the eastern shore of Maryland or Delaware to do the work? And anyone recommend a decent TC that wont break my account? Have you tried another dealer in your area? Did they keep it overnight? Please feel free to contact me for more assistance. Thank you. Tricia, Chevrolet Customer Service. Quote Link to comment Share on other sites More sharing options...
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