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Service 4WD Light

aggietke00
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Pinnacle Enthusiast

Pinnacle

Posted
Posted

Ya one of the many electrical issues We ve seen at the dealership I work at.  Just plagued with issues this generation.

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Pinnacle
Pinnacle

Yes, we've had 3 trucks and done them all with no questions asked. Our dealerships always tries to go above and beyond. 

Mariah Forar
Mariah Forar

1/27/19 @ 5:35 am my truck threw this code.. "Service 4WD" after attempting to switch it from AUTO to 2HI. I was not moving, the truck was in neutral and I had just driven it the day before about 100

Colossus
Colossus

No.  They have their fair share of issues.  If you want a truck with fewer issues, go back about 10 years to the GMT-900s (without AFM) or even the GMT-800s.  Find a low millage and you'll have a GREA

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19Sierra Enthusiast

19Sierra

Posted
Posted
5 hours ago, Pinnacle said:

Ya one of the many electrical issues We ve seen at the dealership I work at.  Just plagued with issues this generation.

Have you found a fix for it?

19Sierra Enthusiast

19Sierra

Posted
Posted

Light went back out after driving for 10 miles. Called dealer this morning and they told me unless the light is on there is nothing they can do. Starting to get really frustrating.

Pinnacle Enthusiast

Pinnacle

Posted
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6 hours ago, 19Sierra said:

Have you found a fix for it?

Negative, but some of the mechanics think its a bad ground somewhere

19Sierra Enthusiast

19Sierra

Posted
Posted
7 minutes ago, Pinnacle said:

Negative, but some of the mechanics think its a bad ground somewhere

The code that was originally pulled the first time I took it in was C15A9. Is that similar to the codes you've seen on the trucks that came in?

Pinnacle Enthusiast

Pinnacle

Posted
Posted
10 minutes ago, 19Sierra said:

The code that was originally pulled the first time I took it in was C15A9. Is that similar to the codes you've seen on the trucks that came in?

yes as well as C05D2 & P25A2, been seeing few trucks coming in with oil pans leaking aswell as the rear diffs. 

19Sierra Enthusiast

19Sierra

Posted
Posted
16 minutes ago, Pinnacle said:

yes as well as C05D2 & P25A2, been seeing few trucks coming in with oil pans leaking aswell as the rear diffs. 

Thank you for your knowledge. Now I just have to try to get the truck to the dealer next time it comes on before it clears itself. 

Dan V 25 Enthusiast

Dan V 25

Posted
Posted
5 hours ago, Pinnacle said:

yes as well as C05D2 & P25A2, been seeing few trucks coming in with oil pans leaking aswell as the rear diffs. 

I know this sounds dumb but the leaking oil pan and diff is under warranty?

Pinnacle Enthusiast

Pinnacle

Posted
Posted (edited)
12 minutes ago, Dan V 25 said:

I know this sounds dumb but the leaking oil pan and diff is under warranty?

Yes, we've had 3 trucks and done them all with no questions asked. Our dealerships always tries to go above and beyond. 

Edited by Pinnacle
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Dan V 25 Enthusiast

Dan V 25

Posted
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42 minutes ago, Pinnacle said:

Yes, we've had 3 trucks and done them all with no questions asked. Our dealerships always tries to go above and beyond. 

Nice. It's hard to find good dealerships. This is my first brand new truck and I love it besides the 4wd so far. I hope I dont have more problems 

Extractor Enthusiast

Extractor

Posted
Posted

New owner of 2020 AT4(1 week old), and my service 4WD light came on last night on way home from work too.  I was in AUTO when I noticed it.  Was still on this AM.  I restarted truck and it wasn't there.

 

Dealer told me that it has to be on for them to see, but they didn't know the carbon bed was different than a regular bed....SERIOUSLY!!!

Pinnacle Enthusiast

Pinnacle

Posted
Posted
19 hours ago, CNADN SIERRA said:

Maybe I should have bought an F150..........?

I cringe when I hear people say that, and Im apart of every forum GM FORD RAM TOYOTA as I have worked for all of them as and adviser.  FORGET the top 3 and ONLY buy as we in the industry call them the "TANK" Tundra, nothing else comes close best built truck period. 

19Sierra Enthusiast

19Sierra

Posted
Posted (edited)

Light came on again when I pulled into my driveway. Hopefully the light stays on for the trip to the dealership tomorrow morning. Would have taken it right there but they said they dont have any loaners available or anyone to give me a ride to get a work truck.

20200121_163050.jpg

Edited by 19Sierra

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