In a previous video https://youtu.be/s8HuR6Rbrf0 I started to have a look at a Chevy Express van that came in with no low beams. A few checks of the systems we narrowed it down pretty quick. Not the relay, fuse, bulbs, switch or the BCM. It has to be corrosion or a broken wire. Now it's time to hunt. -Enjoy!
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50 thoughts on “Chevrolet express van: no low beam headlights – part ii”
  1. Avataaar/Circle Created with python_avatars School of Hard Knocks says:

    Thanks just bought a used 97 1500 express doesn't have headlights or turn signals also brakes are squishy so I have a rabbit whole to go down but should be a good van after I fix this stuff.

  2. Avataaar/Circle Created with python_avatars baascoe says:

    You never cease to amaze me.

  3. Avataaar/Circle Created with python_avatars Mike Glasgow says:

    I'm in Boise Idaho,
    I've taken my truck to 5 different shops
    Luckily for me. NO ONE charged me for a small test drive in their parking lot or just down the street and back. I've gotten 4 different answers. Lol. 2004 CHEVY 2500HD. IF A MECHANIC READING THIS POST. I'LL STATE THE PROBLEM.

  4. Avataaar/Circle Created with python_avatars Jacob Hillanbrand says:

    great commentary my friend. I just purchased one of these except I don't have high or low beam. Hopefully it's just the bulbs. well see. I legit got it in the past week. so far needs brake lines too

  5. Avataaar/Circle Created with python_avatars Best Friend says:

    All those chevy van truck have cheap seal bean connector after many years Connector get corroded and head light start failure that was my case till a replaced plug for newer and seal

  6. Avataaar/Circle Created with python_avatars Daniel Dickinson says:

    Soaking crusty connectors in CLR removes most of the corrosion. Power disconnected; you can soak the whole connection in a Ziploc baggie submerging the pins 15-30min. Doesn't hurt the plastic or the wire shielding.

  7. Avataaar/Circle Created with python_avatars Kyle Tracey says:

    Great vid. Got no lows or drl. Only hi beams. Driving me nutts !

  8. Avataaar/Circle Created with python_avatars thomas robinette says:

    I have this problem. Thinking about clipping the high beam wire and rerouting it to the low beam wire just before the headlight. Can anyone think of a bad consequence from that?

  9. Avataaar/Circle Created with python_avatars SEAN MURRAY says:

    You are awesome

  10. Avataaar/Circle Created with python_avatars Thiago Lima says:

    Thanks. Very helpful

  11. Avataaar/Circle Created with python_avatars Joe Corrie says:

    Great two part video of trouble shooting a low beam headlight issue but do you have a breaking point like the rest of us humans ? could you just throw a tool or something once in a while and make me feel a little better Lol, all kidding aside your a great mechanic, love all the videos.

  12. Avataaar/Circle Created with python_avatars Ronald Hoppus says:

    Good video. I have a 2011 3500 with left low beam problem. Where can I get the wiring diagrams from. Thanks

  13. Avataaar/Circle Created with python_avatars Peter Parker says:

    Love every video, and the logical process. Been improving my diagnostic technique thanks to this man.

  14. Avataaar/Circle Created with python_avatars Jon Minnella says:

    I'm not a mechanic just a guy who likes to work on my own cars for hobby I have same problem with 98 dose a 98 have BCM I could use a little help

  15. Avataaar/Circle Created with python_avatars John Guarnieri says:

    Great video! My thought. What if you would have put a dvom, black lead on battery ground, and red lead on the relay base "control side" ground "terminal "86" if terminal 85 was hot" "key on" wouldn't you get a non-zero reading, meaning resistance on the ground side? Also Mrs. O is too cute. 🙂

  16. Avataaar/Circle Created with python_avatars Daniel says:

    Yeah that was very good job seem long to fine the issue great work 👍 👏 my question chev uplander 08 underneath the driver seat is block connection plug at the top and plug the bottom . Who knows

  17. Avataaar/Circle Created with python_avatars sam bitar says:

    Impressive team works with a supreme common sense with a 1000 percent accuracy to the bottom of issue. All have the best days ever. thank you

  18. Avataaar/Circle Created with python_avatars Vern Anderson says:

    Well done good video, thanks

  19. Avataaar/Circle Created with python_avatars Roy White says:

    Great detective work.

  20. Avataaar/Circle Created with python_avatars Technical Items says:

    So, did this wire fix it? Is there a part 3?

  21. Avataaar/Circle Created with python_avatars Sam Walker says:

    Thank you so much for this video I literally couldn’t figure it out and sure enough my wire looked exactly like that one and now it works you have saved me so much time and money thank you 🙏

  22. Avataaar/Circle Created with python_avatars Ricardo Mercedes says:

    I'm here to see Mrs. O! She's a peach, you lucky dog!

  23. Avataaar/Circle Created with python_avatars tirecheck says:

    Eric the great

  24. Avataaar/Circle Created with python_avatars SimiNelsonFamily says:

    Nice work on another crusty vehicle. You and I have a lot in common. We both married up.

  25. Avataaar/Circle Created with python_avatars James Tungate model reviews says:

    My kia has that problem had it fixed twice stiil doesnt work

  26. Avataaar/Circle Created with python_avatars Alan Torrance says:

    For that connector, you could go to a wrecker and get a unit complete with the wires coming out of that lower section. Use one of the good ones. Save the rest for the future.

  27. Avataaar/Circle Created with python_avatars Hank Kingsley says:

    Time to buy a new van.

  28. Avataaar/Circle Created with python_avatars Red Toberts says:

    Salt is good shit. Gets everywhere and causes corrosion.

  29. Avataaar/Circle Created with python_avatars B Souza says:

    Eric O I’m VERY proud of youse. 🤓. You do a GREAT job 👏

  30. Avataaar/Circle Created with python_avatars Charlie Fisher says:

    Got the exact same problem with my 2003 Chevy express 2500. Nothing wrong with the fuses. New relays. Jumped from a key switch hot wire and they work fine, but not as they're supposed to without the jump wire. Thanks for the heads up.

  31. Avataaar/Circle Created with python_avatars Drew Bush says:

    Hopefully the guy doesn't watch your videos calling his van piece of crap

  32. Avataaar/Circle Created with python_avatars Steven Cline says:

    I always stay for the end, you've got the best two ending lines on YT.

  33. Avataaar/Circle Created with python_avatars Tony Montana says:

    Thats good mechanics are worth every penny

  34. Avataaar/Circle Created with python_avatars Hammers Garage says:

    In the words of Red Green 'if the Ladies don't find you handsome they should at least find you handy'.

  35. Avataaar/Circle Created with python_avatars rick galla says:

    Great job on Chevy lights
    Chevy fuse boxes are alot of problems with pin erosion
    Thank u

  36. Avataaar/Circle Created with python_avatars Glenn Hamblin says:

    Thanks Eric O! Great troubleshooting!
    Now was there a missing fuse that was wired? Might have been able to hack an unused terminal and wire?

  37. Avataaar/Circle Created with python_avatars 7curiogeo says:

    OMG the corrosion factor there should condemn a Vehical after 5 years max. The manuf and dealers should be so proud.
    Do they pay the state??

  38. Avataaar/Circle Created with python_avatars Robert Wright says:

    That corroded fuse panel is just the beginning, the owner should just take the hit and head to the auto graveyard.
    As always very informative.

  39. Avataaar/Circle Created with python_avatars whirl tech says:

    "Does it have to smell like this?" Cluing the audience into the complete reality of the situation.

  40. Avataaar/Circle Created with python_avatars James Bernardino says:

    Is there a spare(unused) connection pin in the fuse block in that you can use to replace the affected terminal with the “new” one?

  41. Avataaar/Circle Created with python_avatars Wayne Simpson says:

    I wish I had the patience you have sir I tried diagnosing my Chrysler Sebring for a broken wire in the TCM harness for a week drove me absolutely crazy and told my wife well babe there our problem I'm not good at wire chasing sent it to the mechanic he still has the car a month later lol dang Chryslers

  42. Avataaar/Circle Created with python_avatars Randy Rogers says:

    Eric is a "water walker" and family is terrific. I'm working closely with my grandson, who is beginning to talk. I want his first sentence to be, "There's your problem lady!" I'm sure that will be appreciated by his mother and day care teachers (or perhaps not). Randy

  43. Avataaar/Circle Created with python_avatars John H says:

    MANY years ago I repaired comm and crypto gear for the US Navy. Your methodology in finding and fixing problems brings me back to those days in uniform. Keep up the good work.

  44. Avataaar/Circle Created with python_avatars Andrew Perry says:

    Eric O. is the best teacher I have found on the you tubes. I have learned so much and still learning!

  45. Avataaar/Circle Created with python_avatars Roxanne Abbott says:

    Thank you for this step by step!!!