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Tahoe Surgging

bowtieman21

By bowtieman21
in Ask A GM Technician

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bowtieman21 Enthusiast

bowtieman21

Posted
Posted

I have a 2001 tahoe with 5.3 and 4x4 4l60E trans. I am having a problem with it at 40-50 mph and usually going uphill it will feel like its slipping and the tach raises 200-300 rpm. This only happens in this rpm range and runs great below 40 and no problems at 65 either. New fuel pump and filter, replaced tranny fluid and filter, changed the VSS on transfer case also had injectors flushed and cleaned the MAF sensor, and resent tune up, any thing else that I should look into?? Thanks for the help. :lol: Shows no codes either

bowtieman21 Enthusiast

bowtieman21

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Posted
Have you cleaned out the throttle body?

 

 

Havent tried that one yet, but would think that would be more consistant thru the rpm range than just at 40-50 mph. I will try that but any other suggestions woul be great. I also forgot to mention it has 137,000 on it.

bowtieman21 Enthusiast

bowtieman21

Posted
  • Author
Posted
It might, but chances are, if it just started happening, it is something mechanical.

 

 

Started doing it a out 2 months ago about 1 month after buying the truck (of course). Taken it to shops and always get a different answer but no one will give me a "YES THIS IS YOUR PROBLEM" since there are no codes. I may have to wait and see if any pop up but I have my doubts, or till it gets alot worse. I dont have money to waste on "This should fix it or that should fix it. One shop said it was the injectors (I didnt think so though but) so I had them flushed and did not do the trick. I have checked alot with an ohmeter for what feeds the PCM and everything seems to be normal. I just find it weired that it only does it between 40 and 50 on an incline (kick out of lock up,yes, but not shuttle in and out in and out). There are no weird noises and no vibrations at all with the truck. Thanks for all the help you are giving me so far, evry bit helps. :lol:

bowtieman21 Enthusiast

bowtieman21

Posted
  • Author
Posted
It might, but chances are, if it just started happening, it is something mechanical.

 

 

Started doing it a out 2 months ago about 1 month after buying the truck (of course). Taken it to shops and always get a different answer but no one will give me a "YES THIS IS YOUR PROBLEM" since there are no codes. I may have to wait and see if any pop up but I have my doubts, or till it gets alot worse. I dont have money to waste on "This should fix it or that should fix it. One shop said it was the injectors (I didnt think so though but) so I had them flushed and did not do the trick. I have checked alot with an ohmeter for what feeds the PCM and everything seems to be normal. I just find it weired that it only does it between 40 and 50 on an incline (kick out of lock up,yes, but not shuttle in and out in and out). There are no weird noises and no vibrations at all with the truck. Thanks for all the help you are giving me so far, evry bit helps. :thumbs:

 

 

OK took tahoe to dealer and they did find codes 0122 and P1122 both for TPS but I brought it home and changed the TPS and still doing the same thing. Do I have to have them erase the codes before it would start working right?? Or is there a way I can erase the codes with out a scanner ?? Since they were the only ones to find the code and I have no SES light on the scanners at check and autozone dont pick up the codes.

  • 7 months later...
hitempguy Enthusiast

hitempguy

Posted
Posted

Did replacing the TPS fix the problem? I have the same issue with my "04

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