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In this video I have a look at a 2009 Chevy Impala 3.5l that was dropped off with a complaint of, no PRNDL display, engine light, ABS and trac light on. The code stored in the engine module is "Internal Mode Switch 'B' Circuit High Voltage." After developing a diagnostic game plan it does not take us long to track down the problem. 🐭-Enjoy!
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49 thoughts on “Chevrolet impala: no prndl display”
  1. Avataaar/Circle Created with python_avatars DKA_ALLDAY Lankford says:

    Great job very informative

  2. Avataaar/Circle Created with python_avatars Tore Helge Nes says:

    Classic rodentasious 😂😂

  3. Avataaar/Circle Created with python_avatars Edwin Lugo says:

    Hello my friend I really appreciate your video i was really looking for a answer to my transmission lever that was stuck in the park position and wouldn't down shift to the other gears so i thank you for your help again I'm a street mechanic but yes i have a 1year 1/2 of automotriz auto mechanic vocational training when I used to live in Puerto Rico i had taken the training and i love working on my cars i appreciate it very much thanks again ✌️ from e doggie dog Bow Wow

  4. Avataaar/Circle Created with python_avatars Donald layton says:

    Eric I know you are busy
    I got to know more on automotive electrical equipment and the work involved. Really requesting a advanced version of this video thank you so much!

  5. Avataaar/Circle Created with python_avatars powerram92 says:

    When do you disconnect the battery when working on electrical parts?

  6. Avataaar/Circle Created with python_avatars Robert Shipp says:

    Very informative

  7. Avataaar/Circle Created with python_avatars Monqueal Rothgeb says:

    Okay so when I replaced my tcm the car came on didn't have the box around the gears it also wouldnt even let me take it out of gear either. So I looked at the wires that lead from the tcm and some of them were chewed up going towards the transmission so I was assuming it was that. So I redid all the wires and the car won't start up 😭

  8. Avataaar/Circle Created with python_avatars Johnny Sechrist says:

    Wonder why a mouse would pee in their bed?

  9. Avataaar/Circle Created with python_avatars Allspark says:

    Thanks South Main Auto….. Found same problem with one I was working on. Really enjoyed watching your fix…. Loved the kid helping out… great job

  10. Avataaar/Circle Created with python_avatars Jeffrey Kircher says:

    Can anybody please tell me why my 2011 Chevy Impala speedometer is reading to me my door is open and it is completely shut? Please it's inspection month I don't know what to do. The interior lights stay on because it says door is not shut even when I get out so I took the interior lights fuse out but then now one of my blinkers isn't working I've changed the bulbs and even went back to my new bulb and three of the four blinker lights were working and then I put the interior lights fuse back in just to see if it would work and it worked to make all four blink again for the turn signal. What do I do

  11. Avataaar/Circle Created with python_avatars brian scott says:

    I have an 06 Impala indicators don't work for the parking app and on the dash it says error could that be the problem thanks

  12. Avataaar/Circle Created with python_avatars No You says:

    I just had an issue with mine and this video saved me so much money cause a several mechanic shops couldn't figure out what was wrong. As they were saying everything tested fine. One shop even said it might be the transmission but it was a brand new transmission. That worked fine for a month or so before the issues with the box on the gears.

  13. Avataaar/Circle Created with python_avatars Blazer 123 says:

    thaks eric

  14. Avataaar/Circle Created with python_avatars Steve Darnell says:

    Make sure the keys off , I would have to blow the horn while I was in there.

  15. Avataaar/Circle Created with python_avatars Mister Mr says:

    Hantavirus is no joke lol, shit's like Ebola

  16. Avataaar/Circle Created with python_avatars Joshua Hutchins says:

    Mouse urine is acidic 🤢

  17. Avataaar/Circle Created with python_avatars Tom Beilman says:

    Just don’t lick your fingers after working on this

  18. Avataaar/Circle Created with python_avatars Stephen says:

    I would imagine mothballs in the box would also work.

  19. Avataaar/Circle Created with python_avatars Jeff Valasek says:

    Isn't it wonderful that auto wire is being made with vegetable oil rather than petroleum? Surprise?

  20. Avataaar/Circle Created with python_avatars Gerard Larchick says:

    I think you should set up a satellite shop in Central Nebraska ! ! !

  21. Avataaar/Circle Created with python_avatars John Sampson says:

    No rodent codes in service? Lol

  22. Avataaar/Circle Created with python_avatars John Sampson says:

    No rodent codes in the data book!! Lol

  23. Avataaar/Circle Created with python_avatars Brandon Davidson says:

    You think i have the same problem

  24. Avataaar/Circle Created with python_avatars Brandon Davidson says:

    Hey buddy I have a 2006 impala and mine goes in and out like I will be driving down the road and the door locks will lock thereselfes and the speed ometer stops working and then it dont show what gear its in

  25. Avataaar/Circle Created with python_avatars Gregory Murphy says:

    Another great video. Thanks

  26. Avataaar/Circle Created with python_avatars Brian Bridges says:

    One thing that stands out for me is I’ve seen a number of SMA videos where rodents are the cause of the problem, apparently that NewYork state is awash with rodents. I read stories of rats as big as cats ruling NY city and in a little town not close to the city is having rodent issues too. Is NewYork state that infested with Rodentia?

  27. Avataaar/Circle Created with python_avatars retro440 says:

    Red squirrels – hundreds of dollars in wiring repair for 2010 Town and Country. The little bastards!

  28. Avataaar/Circle Created with python_avatars Dorngrunder says:

    "Well there's your problem" 😄

  29. Avataaar/Circle Created with python_avatars keltecshooter says:

    I cried when old yeller died…..

  30. Avataaar/Circle Created with python_avatars Stevan Rose says:

    Liquid tape works great on wires like those goes on easy and drys quick. Pu

  31. Avataaar/Circle Created with python_avatars James Lacy Kamuf says:

    Informative, as usual, video – didn't know these switches were on a modern transmission.

  32. Avataaar/Circle Created with python_avatars C-ROSS SUMMERS says:

    I HATE MICE AND RATS with a passion

  33. Avataaar/Circle Created with python_avatars Uncle J says:

    Capsaicin. What makes peppers muy caliente.

  34. Avataaar/Circle Created with python_avatars Raul L Calzadilla says:

    Do you know of any mechanics here in Miami, Florida that are at your "abnormal" level of proficiency? If, yes, I promise I will keep the secret and send info ASAP!

  35. Avataaar/Circle Created with python_avatars Alfonso Vazquez says:

    I removed the transmission on one to put in the rear main seal now I have this problem and I have no idea what it is there no ripped wires

  36. Avataaar/Circle Created with python_avatars Jacob Osgood says:

    The best part is that more than half of the shops in the country would've told you that you needed a full transmission rebuild, because that sensor is internal to the transmission. And the rest of the shops would've just cleared the code because they couldn't find what it meant. Good diag Mr. O!

  37. Avataaar/Circle Created with python_avatars Scott Hager says:

    Yuck, dam mice (s) !! Nice fix! Great video

  38. Avataaar/Circle Created with python_avatars Michael Knorr says:

    Because there is enough of a pattern to create the situation where a solution was created, this may become a warranty issue.

  39. Avataaar/Circle Created with python_avatars Michael Knorr says:

    If you were lucky, the linkage would be the issue.

  40. Avataaar/Circle Created with python_avatars Ashley Lamb says:

    I have a question as of yesterday my car how to code that popped up service stability track and service traction control and then my engine light came on I am unable to go over 50 mph My PRNDL it’s not showing what gear I am in and I have no idea what the problem could be or how to even fix it Could you please give me some kind of feedback

  41. Avataaar/Circle Created with python_avatars Josh Snyder says:

    Where is the neutral safety switch located on a 2003 impala 3.8l

  42. Avataaar/Circle Created with python_avatars Jon Haskell says:

    Rodents LOVE the "soy based" wiring insulation that manufacturers have been using for about the past twenty years.
    It's almost like the car makers for a committee… to find a new way to generate repair revenue.

  43. Avataaar/Circle Created with python_avatars Kristol Quigley says:

    So what do you test when this isnt the issue? Can you post a prndl diagram

  44. Avataaar/Circle Created with python_avatars Aaron Zhao says:

    Where do you get all the diagrams other than dealer. Good video.

  45. Avataaar/Circle Created with python_avatars Lawrence Anderson says:

    A friend of mine bought a brand new Nissan Altima and a week later the check eng light came on. back to the dealer and they found the main harness, battery case, and other plastic was eaten. over 1600 dollars of damage, not covered by the warrantee. Soy based insulation. yummy yummy. He is paranoid now and putting rodent repellent in the eng compartment

  46. Avataaar/Circle Created with python_avatars Shane Harrison says:

    Yeah got hollered at about the hantavirus and bubonic plague and some other sicknesses while working on my first wife's oldsmobile ls when the computer supposedly died 81 didnt have one

  47. Avataaar/Circle Created with python_avatars Labrador McGraw says:

    Every SMA video is a winner. I'd never heard of rodent tape before – definitely worth bearing in mind.

  48. Avataaar/Circle Created with python_avatars Fred Webb says:

    Rodent tape, who'd a thunk it? Leave it to honda! Great Job!

  49. Avataaar/Circle Created with python_avatars South Main Auto Repair LLC says:

    Looked on the old Amazon and I did not see the Honda Rodent tape being offered there any more. However you should be able to pick up a roll from your local Honda dealer .

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