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1998 Silverado 2 Wheel Dr. has 1875 error code code reads four-wheel-drive low switch circuit malfunction


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Butchheddings
User

Aug 30, 2019, 4:24 PM

Post #1 of 26 (791 views)
  post locked   1998 Silverado 2 Wheel Dr. has 1875 error code code reads four-wheel-drive low switch circuit malfunction  

Subject: 1998 Silverado 5.0
2 Wheel Dr. has 1875 error code reads 4 wheel-drive low switch circuit malfunction!
I have had a transmission shifting problem, Sometimes, the transmission would only stay in drive and not shift from first second third automatically. Sometimes it will shift normally. This has been going on for 6 months.
I took it to have the transmission replaced and the transmission shop said there was nothing wrong
Mechanically,
Maybe this issue has something To do with 4 Wheel Dr. error code on my 2 Wheel Dr. vehicle. I would appreciate any help or any ideas you might have. Thanks


(This post was edited by Butchheddings on Aug 30, 2019, 4:51 PM)


gsferraro
Enthusiast

Aug 30, 2019, 5:50 PM

Post #2 of 26 (775 views)
  post locked   Re: 1998 Silverado 2 Wheel Dr. has 1875 error code code reads four-wheel-drive low switch circuit malfunction  

Hello,
Ok, just to confirm, this is a 2WD not a 4WD Correct? Gary


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Aug 31, 2019, 3:36 AM

Post #3 of 26 (760 views)
  post locked   Re: 1998 Silverado 2 Wheel Dr. has 1875 error code code reads four-wheel-drive low switch circuit malfunction  

? Butch - Quote when you edited your first post ">(This post was edited by Butchheddings on Aug 30, 2019, 6:51 PM)<"
That was time stamped AFTER the question of what this is now is all confused what the heck this is. Is this truck altered or just a 2WD truck that shows errors for a 4WD that it NEVER had?
Please don't fix the mistakes, rather add a new post for Gary here (trans expert of the site) so he can advise it's too confused right now what it is,


Tom



Butchheddings
User

Aug 31, 2019, 8:25 AM

Post #4 of 26 (746 views)
  post locked   Re: 1998 Silverado 2 Wheel Dr. has 1875 error code code reads four-wheel-drive low switch circuit malfunction  

That is correct it’s a 2 wheel drive

In Reply To


Butchheddings
User

Aug 31, 2019, 8:27 AM

Post #5 of 26 (746 views)
  post locked   Re: 1998 Silverado 2 Wheel Dr. has 1875 error code code reads four-wheel-drive low switch circuit malfunction  

Sorry about that this is my first time using this forum and I realize I did not give you enough information it is a 2 Wheel Dr. non-altered Chevy Silverado 1500 and has an error code for a four-wheel-drive vehicle

In Reply To


gsferraro
Enthusiast

Aug 31, 2019, 1:24 PM

Post #6 of 26 (730 views)
  post locked   Re: 1998 Silverado 2 Wheel Dr. has 1875 error code code reads four-wheel-drive low switch circuit malfunction  

Hello,
Ok, even though this is a 2WD, they are wired for 4WD, what is going on is the 4WD low wire is grounded somewhere, this can be confirmed looking at data on a scan tool, but the fix is to just cut the wire, has no use on 2WD, if you want to post your VIN number I may be able to pull a wiring diagram.
If you clear the code, does it come right back? Does it seem like the car is shifting early?


Butchheddings
User

Sep 1, 2019, 11:08 AM

Post #7 of 26 (708 views)
  post locked   Re: 1998 Silverado 2 Wheel Dr. has 1875 error code code reads four-wheel-drive low switch circuit malfunction  

 Yes when I clear the code, it comes back within The driving cycle
And yes the car shifts early often
Vin 2GCEC19M1W1253821
Thanks so much for your help I’ve been trying to find a solution for two months now.


Butchheddings
User

Sep 1, 2019, 11:15 AM

Post #8 of 26 (708 views)
  post locked   Re: 1998 Silverado 2 Wheel Dr. has 1875 error code code reads four-wheel-drive low switch circuit malfunction  

 Hello thanks for your response, I’ve been trying to find answers for two months. This seems to be on the money
Vin number 2GCEC19M1W1253821
And yes it seems to shift early often
Yes when you turn off the code it returns within a few miles of driving the vehicle, same code. Thanks again


gsferraro
Enthusiast

Sep 1, 2019, 4:24 PM

Post #9 of 26 (687 views)
  post locked   Re: 1998 Silverado 2 Wheel Dr. has 1875 error code code reads four-wheel-drive low switch circuit malfunction  

Hello,
OK get back to you as soon as I can, you know the location of the computer?


gsferraro
Enthusiast

Sep 2, 2019, 8:14 AM

Post #10 of 26 (676 views)
  post locked   Re: 1998 Silverado 2 Wheel Dr. has 1875 error code code reads four-wheel-drive low switch circuit malfunction  

Hello,
The computer should have 4 connectors plugged into the PCM, The transmission controls are usually in the C4 connector. working on wiring


Butchheddings
User

Sep 2, 2019, 12:07 PM

Post #11 of 26 (667 views)
  post locked   Re: 1998 Silverado 2 Wheel Dr. has 1875 error code code reads four-wheel-drive low switch circuit malfunction  

 OK working on it, no time today thank you for your help I’ll get back to you


Butchheddings
User

Sep 3, 2019, 8:17 AM

Post #12 of 26 (638 views)
  post locked   Re: 1998 Silverado 2 Wheel Dr. has 1875 error code code reads four-wheel-drive low switch circuit malfunction  

Yes I know Where it is, so guess I’m ready


gsferraro
Enthusiast

Sep 3, 2019, 5:27 PM

Post #13 of 26 (625 views)
  post locked   Re: 1998 Silverado 2 Wheel Dr. has 1875 error code code reads four-wheel-drive low switch circuit malfunction  

Hello,
Ok, look at the C4 Connector, see on terminal #19 If there is a Black/white wire, that is the 4WD Low signal, to help I.D if there is a wire there, Terminal #18 is a Pink wire, Terminal #20 May be blank it doesn't show terminal 20 on the wiring diagram. Let me know what you find.
The 4WD low signal said 4WD only on the diagram, let me know if there is a wire there. Gary


Butchheddings
User

Sep 5, 2019, 7:19 AM

Post #14 of 26 (598 views)
  post locked   Re: 1998 Silverado 2 Wheel Dr. has 1875 error code code reads four-wheel-drive low switch circuit malfunction  

 Thanks Gary, I’m having a mechanic friend come look at it in a couple of days, based on your information I am not Comfortable, or experienced enough to Continue, from this point. I would like to keep this dialogue open Until after my mechanic friend Comes to help.
I’m also going to look on YouTube just to try to familiarize myself with the


Butchheddings
User

Sep 7, 2019, 9:49 AM

Post #15 of 26 (561 views)
  post locked   Re: 1998 Silverado 2 Wheel Dr. has 1875 error code code reads four-wheel-drive low switch circuit malfunction  

 Good morning Gary, opened up C4 which is the black terminal, hard to find that information which color is C1C2C3&c4 just an FYI for us novice backyard mechanics definitely not a complaint.
19 is black and white, 18 is pink 20 as a white wire, could actually be yellow as I peel harness tape back
Thanks again I’m ready And excited and hopeful-for your next step almost 2 months of thinking around with this problem. Just a note watch some YouTube videos where they thanked you for your information at the end of the videos. Thought that was awesome


Butchheddings
User

Sep 7, 2019, 10:13 AM

Post #16 of 26 (555 views)
  post locked   Re: 1998 Silverado 2 Wheel Dr. has 1875 error code code reads four-wheel-drive low switch circuit malfunction  

 20 was yellow as I peeled back electrical tape


gsferraro
Enthusiast

Sep 7, 2019, 11:40 AM

Post #17 of 26 (543 views)
  post locked   Re: 1998 Silverado 2 Wheel Dr. has 1875 error code code reads four-wheel-drive low switch circuit malfunction  

Just cut it 3 inches or so away from the connector just in case you have to reattach the wire. Gary


Butchheddings
User

Sep 7, 2019, 11:51 AM

Post #18 of 26 (541 views)
  post locked   Re: 1998 Silverado 2 Wheel Dr. has 1875 error code code reads four-wheel-drive low switch circuit malfunction  

Cut 19 black?


Butchheddings
User

Sep 7, 2019, 4:05 PM

Post #19 of 26 (528 views)
  post locked   Re: 1998 Silverado 2 Wheel Dr. has 1875 error code code reads four-wheel-drive low switch circuit malfunction  

 So I disconnected the battery which Means I’m going to have to drive for Cycle to see if cutting the black wire
Keeps a code from reoccurring, I’ll let you know after I drive it 30 miles or so!🤞🤞


gsferraro
Enthusiast

Sep 7, 2019, 5:24 PM

Post #20 of 26 (521 views)
  post locked   Re: 1998 Silverado 2 Wheel Dr. has 1875 error code code reads four-wheel-drive low switch circuit malfunction  

ok, when you would clear the code, how fast before it comes back? Gary


Butchheddings
User

Sep 8, 2019, 2:10 PM

Post #21 of 26 (496 views)
  post locked   Re: 1998 Silverado 2 Wheel Dr. has 1875 error code code reads four-wheel-drive low switch circuit malfunction  

When I’ve cleared it in the past it came back within 20 to 25 miles, I’ve only driven out about 5 miles since I cut the black wire, I am driving it tomorrow hoping engine light doesn’t come back
I’ll let you know tomorrow afternoon
Butch


gsferraro
Enthusiast

Sep 8, 2019, 5:20 PM

Post #22 of 26 (485 views)
  post locked   Re: 1998 Silverado 2 Wheel Dr. has 1875 error code code reads four-wheel-drive low switch circuit malfunction  

Ok, sounds good. Gary


Butchheddings
User

Sep 9, 2019, 6:49 PM

Post #23 of 26 (459 views)
  post locked   Re: 1998 Silverado 2 Wheel Dr. has 1875 error code code reads four-wheel-drive low switch circuit malfunction  

29 miles today no engine light so farSmile
Will drive it a few more miles and then head to the emissions. My fingers are crossed.

Big thanks, I do have another issue but I will address that after I pass emissions
Butch


Butchheddings
User

Sep 10, 2019, 1:48 PM

Post #24 of 26 (434 views)
  post locked   Re: 1998 Silverado 2 Wheel Dr. has 1875 error code code reads four-wheel-drive low switch circuit malfunction  

 Gary, another success story for you thank you so much just passed omissions got the tags on the truck as i speak , I will post information later this afternoon about my transmission shifting problem
You’re a lifesaver and a money saver thanks again
Butch


gsferraro
Enthusiast

Sep 10, 2019, 3:15 PM

Post #25 of 26 (427 views)
  post locked   Re: 1998 Silverado 2 Wheel Dr. has 1875 error code code reads four-wheel-drive low switch circuit malfunction  

Awesome, glad to hear your back on the road and you fixed it yourself. Gary






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