3 posts · Joined 2024. #1 · Jan 12, 2024. I have a 2011 GMC Sierra with 250 k. About a month ago I started the truck and the service four wheel drive message displayed. The dash switch wouldn't change modes of you turned it. I discovered after a few days that it seemed to be intermittent. If when it worked you put it in four wheel drive and ...Models: 1999-2002 Chevrolet and GMC C/K Pickup and Utility Models (Silverado, Sierra, Avalanche, Suburban, Tahoe, Yukon, Yukon XL) with Four Wheel Drive and NVG 236/246 Transfer Case (RPO NP8) Condition Some customers may comment on the Service 4WD indicator illuminating. Upon investigation, the technician may find DTC B2725 set. Cause5 Oct 2023 ... Service 4WD Message on dash as well as ABS and Traction Control. Corroded 5 volt reference wire to the Transfer Case Position Sensor.2004 Chevy Silverado Z71 stuck in 4 low. My truck has had the service 4WD light on for some time now, I haven't been able to shift into 4 wd, but the other day I got stuck and was able to shift into 4 low but now cannot get it to shift back. I have tried the disconnecting the battery trick and that didn't do it.Burnt electronic smell with Service 4wd Message. I've been having an intermitten service 4wd system message since I bought this truck a year ago. I have read every thread I could find on the issue and mine recently has been a little different. 2004 Sierra Z71 crew cab 5.3. The problem got more frequent until it came on everytime I drove the truck.Limited" for Chevrolet Motor Division whenever it appears in this manual. Please keep this manual in your vehicle, so it will be there if you ever need it when you're on the road. If you sell the vehicle, please leave this manual in it so the new owner can use it. We support voluntary technician certification. For Canadian Owners Who Prefer aMy 2006 Chevy Silverado 1500 is showing service***** I had the codes read at a service center and the code that came up was C0040 will this code make the service 4wheel drive come on? ... I have a 2003 Chevrolet Suburban and there is a red light on between the 2WD and 4WD high button.Jan 1, 2013 · 112,000 MILES. The truck is stuck in 4wd and the service 4wd light is on. When you push the transfer case selector swicth it flashes and yoiu can hear a clicking noise behind the instrument cluster then you can hear a buzzing noise down at the transfer case and it repeats once more but it never shifts back into 2wd.I have a 2007 chevy silverado LT ext cab. Service 4wd comes on intermittently with no response from 4wd switch. Sometimes it works fine. i have replaced the dash switch and position sensor on transfer ... My service 4wd dash light comes on when I put my truck in auto 4wd. I drive about 150 - 200 feet and the light comes on and will not switch ...3 posts · Joined 2024. #1 · Jan 12, 2024. I have a 2011 GMC Sierra with 250 k. About a month ago I started the truck and the service four wheel drive message displayed. The dash switch wouldn't change modes of you turned it. I discovered after a few days that it seemed to be intermittent. If when it worked you put it in four wheel drive and ...40 posts · Joined 2017. #5 · Jun 29, 2023. My 2017 had "Service 4wd" with the traction control squiggly lines lit up today. Shut truck off and about 20 minutes later it started and no light. The truck does not quite have 14,000 miles on it. Not a misprint, only 13, 897 miles on it. I see this is a common issue but inconclusive on the fix.2001 chevy silverado 75K miles - 3 problems: 1. "service engine soon" light on steady-gas cap on tight for two tankfuls-all fluid levels are up. 2. gas guage flips from full to empty and back again re … read more2004 chevy silverado 4wd problem. Service 4wd light on and switch selector will not change. Replaced dash board switch, encoder motor and wiring under the truck to the encoder motorr. ... I have a 99 chevy silverado 2500 and the service 4wd message displayed once and then never reappeared so I tried to engaged the 4wd and noticed all the XXXXX ...C0387. Circuit Description. The transfer case encoder is a switch that converts a shaft position, representing a mode or range position, into electrical signals for use by the transfer case shift control module. The encoder houses 4 Hall effect sensors that are used for channels P, A, B, and C. These sensors provide a path to ground, when a ...Learn the possible causes and solutions for the Service 4WD message on your Chevy Silverado dashboard. Follow the steps to inspect, disconnect, and reset the 4WD system, or check the wiring, switch, and transfer case components.I'm working on a 2000 silverado, 1500 4x4, 5.7 l. with the service 4wd light on... I have replaced the transfer case ... I have a 99 chevy silverado 2500 and the service 4wd message displayed once and then never reappeared so I tried to engaged the 4wd and noticed all the XXXXX XXXXXghts that indicate which mode the dri ...25 Answers. I don't know if there is any way to reset the service 4wd light but I do know what may have caused it. On my 99 silverado, the 4wd buttons in the dash were the problem. What happens is the solder joints become cracked and thats what triggers the alarm. If you want to, you can take it out and inspect the joints and possibly re-solder ...My 2005 Silverado 1500 Z71 will not go into 4wd ,suddenly. I was just using it last week. the switches light up, on - Answered by a verified Chevy Mechanic ... No. i also am not seeing the Service 4wd light or message. Chevy Mechanic: ... I have a 2005 Chevy Silverado 1500....I installed a reman Transfer case...2hi, and 4lo work just fine, but ...I have a 2003 Silverado 1500 and the other day we had a little snow and i put it in auto 4wd. I heard a whinning noise and got a service 4wd light.163 posts · Joined 2009. #1 · Sep 3, 2012. I have a 2003 Silverado 1500 4.8L 4WD. For the last year or so my "Service Brake System" light will come on randomly. Sometimes when I hit bumps, sometimes when I'm driving down a smooth highway. When it comes on, it will chime for a good five minutes. Its very annoying.Nov 16, 2022 · About a week ago, the service 4wd light came on randomly. It would not shift out of 2high. During the past week the light has come and gone, some mornings it never shows, others it does. But will not shift regardless. Yesterday I tried to shift into 4 high from 2 high to see if it would work, the light just kept blinking and after about 10 ...Will intermittently get the service 4WD message in the DIC. BUT 4WD still works/shifts in and out no problems. ... A forum community dedicated to Chevrolet Silverado and GMC Sierra pickup owners and enthusiasts. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more! ...☕️Support my channel by donating on Kofi ☕️! I will be eternally grateful 💐https://ko-fi.com/lightoverdozThe issue was fixed by replacing the TransferContro...01. Repair or Replace a Faulty Transfer Case Motor. 02. Address Damaged or Worn Vacuum Lines. 03. Clean or Replace a Malfunctioning 4WD Switch. 04. Repair or Replace Compromised Electrical Connections and Wiring. Prevention and Maintenance Tips for Chevy Silverado 4WD Systems.How to reset the the service 4wd light on a 1999 chev suburban. Fix the problems with the 4x4 and clear all of the codes. You can try and disconncet the battery overnight, That should clear the code, But if the problem isn't fixed then It will come back on, maybe when you most need 4x4. Dec 09, 2009 • 1999 Chevrolet Suburban.2023 Chevrolet Silverado 1500 LTZ 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 10A) Went from a Tacoma (love this truck still) back to a full size truck. The Silverado with the 3.0L Duramax diesel ...Just telling my story on it. Check engine started flashing, service traction control light came on, engine was shaking becasue it lost a cylinder. stopped shut off waiteda few minutes cranked and it went away. did this a few times. Took to dealer they could not duplicate and had no codes showing any indication of a problem.Key OFF for at least 30 seconds. Engage parking brake. Place transmission in Neutral. Turn the transfer case shift control switch (TCSCS) to the 2WD HI position for at least 5 seconds. Turn the TCSCS clockwise past the 4WD LO position to the neutral request position and hold for at least 30 seconds.Verified. BOBBYSS and 87 other Chevy Specialists are ready to help you. BOBBYSS, Master Technician. 17,919 Satisfied Customers. ASE MASTER CERTIFIED, AA DEGREE AUTO/DIESEL TECH. BOBBYSS is online now. Share this conversation. I have a 2002 chevy avalanche. Replacing rear u joint, does.Go to http://www.youtube.com/playlist?list=PLAF14558A66A160F9 for more of our DIY auto repair videos! The Message Center on the dash of my 2000 Chevy Suburba...Mine came on yesterday (Service 4WD) and wouldn't go into 4WD. Tried it this morning and it sounded OK. Definitely pulled in. I also pulled the 4WD fuse but don't remember if that was before or after. Checked the owner's manual and nothing referenced an ATC fuse. The ATC reference was for a 2007. Mine is a 2005. Don't know if that makes a ...Yes, you can still drive your vehicle if the "Service 4WD" warning light is illuminated. However, it's essential to exercise caution as driving with this warning light on may pose risks to your vehicle's gearbox and all-wheel drive system. While it's not an immediate emergency, it's advisable to have your vehicle inspected as soon ...I have a 2006 Chevy Silverado 1500 4WD, the message "Service 4WD" continues to come on from time to time. The Unit was - Answered by a verified Chevy Mechanic. We use cookies to give you the best possible experience on our website. ... I have 2002 chevy silverado 1500 with 115,000 miles the service 4wd light comes on intermittenly. What and how ...Sep 21, 2013 · johnlazelle Discussion starter. 12 posts · Joined 2013. #1 · Sep 21, 2013. Hello all, Recently when i went to take our 2002 GMC Yukon XL 1500 out of 4wd, i lost all lights on the transfer case control switch and the service 4wd light came on in the panel. I replaced the transfer case control switch, but that did not solve the problem.Sep 21, 2013 · johnlazelle Discussion starter. 12 posts · Joined 2013. #1 · Sep 21, 2013. Hello all, Recently when i went to take our 2002 GMC Yukon XL 1500 out of 4wd, i lost all lights on the transfer case control switch and the service 4wd light came on in the panel. I replaced the transfer case control switch, but that did not solve the problem.This guide will show you how to reset the 4WD service light on a Silverado. 1. Park your Silverado in a safe place and turn off all accessories, including the engine. 2. Open the hood and locate the four wheel drive switch (it looks like an A-pillar). 3.Hello, I have a 2004 Silverado 1500 4.8L 4X4. I am having an intermittent issue with a "Service Brake System" warning flashing on the DIC and the parking brake light is illuminated accompanied by a constant ding/chime. This will occur for a week then disappear for a month then show up again. The ABS light is not illuminated as I discovered a ...Lights up when you start your vehicle but then goes off by itself, then your Transfer Case Control Module (TCCM) is the suspect (a “Service 4WD” dashboard warning light may also come on). Switches into 4WD just fine but your vehicle isn’t actually sending power to the front wheels, then your front axle actuator is the suspect.288 posts · Joined 2008. #2 · Feb 18, 2016. The exact same thing happened with my parents 07.5 and the only thing that fixed it was reprogramming from the dealer. Sent from my SM-N915P using Tapatalk. 2009 Chevy 2500hd LMM, 5" straight pipe, EFILive, Banks Ram Air, Fass 150 lift pump, 6" Pro Comp Lift, 18" Fuel Krank wheels, 305-70-18 Mickey ...2004 chevy silverado 4wd w/push button 4wd will no engage into 4wd then sevice 4wd message appears - Answered by a verified Chevy Mechanic. ... 2002 Chevy Silverado 4x4 with Service 4wd light illuminated. Tried replacing push - button with known good one, no change. Also tried an encoder motor replaced, but no change.To recap, here are the steps in which you can successfully clear the Chevy Suburban Service 4WD message: Refer to the Owner's Manual. Inspect the 4WD System. Disconnect the Battery and TCCM. Remove the Knee Bolster and Dash Bezel. Check the Wiring and Switch Assembly.Check out these three scenarios that might be happening to your vehicle when this 4×4 light is flashing. 1. Overheated Transfer Case. On SUVs and crossovers with a light-duty four-wheel-drive system that doesn't feature low-range gearing, the design spec doesn't cover more extreme driving situations like deep mud, rock crawling, or heavy snow.24 Aug 2020 ... We will be bringing the 4 Wheel drive system back to life on this 1995 Chevy Silverado C2500 5.7L (T.B.I.) ... '09 Silverado Service Four Wheel ...Mar 29, 2023 · Learn what the \"Service 4WD\" message means and how to fix it in your Chevy Silverado. Find out the common causes, symptoms, and solutions for the transfer case problem.The ABS light comes on in the dashboard of Chevy Silverado 2500 HD when one or more of the wheel speed sensors have malfunctioned, brake fluid is too low, the fuse is blown or the relay is bad, tire pressure is low, or if the ABS module has developed a defect. When the ABS light / comes on in your Silverado HD, the anti-lock braking system is ...2000 Chevrolet Chevy K Silverado - 4WD DTC B2725 ATC Mode Switch Circuit Malfunction Circuit Description The range/mode switch circuit consists of four normally open switches. The transfer case shift control module supplies a regulated 8 volt, DC to the switch through the 8 V Reg circuit.I have a 2008 chevy z71...When I select any 4wd setting, the lights blink on the selected position for too long a period I am guessing and this creates the "Service 4wd message". I can hear the what sounds like the transfer case motor running and eventually the light quits blinking.Of the two eight-cylinder engines, the 6.2-liter—with 420 horsepower and 460 pound-feet of torque—is the quickest, propelling the Silverado High Country we tested to 60 mph in just 5.4 seconds ...It isn't uncommon for trucks to vibrate a little during driving. However, if your Chevy Silverado vibrates too much, it's time to examine your transfer case. The vibration comes from the improper meshing of the gears. The Service 4WD Light Blinks. If the service 4WD light comes on, it is a sign that the transfer case isn't working correctly.Mar 29, 2023 · Learn what the \"Service 4WD\" message means and how to fix it in your Chevy Silverado. Find out the common causes, symptoms, and solutions for the transfer case problem.service 4WD light on 2003 2500 HD already replaced my Electronic button/switches on the dash and the actuator above - Chevrolet Silverado 2500HD question. ... SOURCE: 01 Chevy Silverado 4 X 4 not working. 4WD light. Having the same exact problem but with my 1999 escalade. Thought it was the actuator bought a new one installed it transfer case ...Chevrolet Silverado 1500 Classic LS: I have a 2000 Chevy Silverado I have a 2000 Chevy Silverado 4x4 Z71 with 70,000 miles. Changed the front and rear differential fluids this weekend with Mobile 1 75w-90 oil. i have autoselect on the console (AWD, 2WD,4wd High, 4WD …This guide will show you how to reset the 4WD service light on a Silverado. 1. Park your Silverado in a safe place and turn off all accessories, including the engine. 2. Open the hood and locate the four wheel drive switch (it looks like an A-pillar). 3. Locate the electrical connector for the switch and unscrew it by turning it anticlockwise ...☕️Support my channel by donating on Kofi ☕️! I will be eternally grateful 💐https://ko-fi.com/lightoverdozThe issue was fixed by replacing the TransferContro...44.5 in. Front Shoulder Room. 66.0 in. To help keep your vehicles — and your business — running smoothly, Chevrolet Business Elite Dealers offer a range of services like dedicated dealer representatives, work-ready loaner vehicles and extended service hours. Experience the 2024 Chevy Silverado 1500 pickup truck equipped with advanced ...Subject: Service 4wd Message With DTC C0392 or C0396 Stored In TCCM Models: 2014-2016 Chevrolet Silverado 2014-2016 GMC Sierra 2015-2016 Chevrolet Tahoe, Suburban 2015-2016 GMC Yukon 2015-2016 Cadillac Escalade Equipped with 4wd RPOs NQH or NP0 This PI was superseded to update Model Years. Please discard PIP5304.Step 2 - Check the fuel cap. The service engine light is connected to your emissions control system. This is why, when the light comes on, you'll notice that your fuel efficiency will go down. The system has a sensor attached to the fuel cap and will trigger the service engine light whenever the fuel cap isn't closed tightly.Step 2 - Check the fuel cap. The service engine light is connected to your emissions control system. This is why, when the light comes on, you'll notice that your fuel efficiency will go down. The system has a sensor attached to the fuel cap and will trigger the service engine light whenever the fuel cap isn't closed tightly.And you need a more advanced code reader, to get codes from the computer controlling the 4wd system. 2004 Sierra 3500 dually, 6.0L extended cab, cab&chassis flatbed, upgraded to 4wd 2012 Silverado 3500 dually, 6.0l, crew cab, long box replaced w flatbedSubject: Service 4wd Message With DTC C0392 or C0396 Stored In TCCM Models: 2014-2016 Chevrolet Silverado 2014-2016 GMC Sierra 2015-2016 Chevrolet Tahoe, Suburban 2015-2016 GMC Yukon 2015-2016 Cadillac Escalade Equipped with 4wd RPOs NQH or NP0 This PI was superseded to update Model Years. Please discard PIP5304.The Service 4WD light is most likely the 4WD switch on the dashboard. If the lights are acting funny then the switch needs to be replaced. There is a quick fix for it though. It is most likely that the soldered connections on the board have microscopic cracks. ... Used Chevrolet Silverado 1500. 4,322 Great Deals out of 130,698 listings starting ...3 posts · Joined 2015. #1 · Jan 12, 2015. My 2014 Silverado transfer indicator switch is set to AUTO and the transfer case is stuck in 4 high. This occurred recently when bad weather arrived here in Michigan and I set the switch to auto. Interestingly, it also happened not long after I took my truck into the dealer for the …2013 Silverado - Service 4WD system. My 2013 Silverado is stuck in 2-high. When I rotate the knob on the dash to AUTO or 4H, nothing happens. I cannot hear the actuator on the front axle or the motor on the transfer case operating. Another forum had a writeup that said if the lights illuminated on the switch upon engine startup and reverted …463 Answers. SOURCE: 2000 silverado z71 service 4 wheel drive light on/off. The problem is with the front actuator.Its flashing in the dash lights because is not functioning properly.Replace actuator and fix problem.Its a 4 or 3 wire screw in plug in front axle,, I'm happy to assist further over the phone at. 6ya.com.2003 Chevrolet Silverado 2500 HD. Visitor. Push button for 4x4 and light comes on service 4x4 & will go in to 4x4 sometime then go out of 4x4. 2006 Chevrolet Silverado 2500 HD 60,000 mi, Visitor. Changed battery and then the service 4 wheel drive light came on and will not engage into 4 wheel drive. 2013 Chevrolet Silverado 2500 HD 230,000 mi ...1999 Silverado Service 4wd light on. No lights on switch lit. They flash as ignition to turned on but all lights then go out. ... A forum community dedicated to Chevrolet Silverado and GMC Sierra pickup owners and enthusiasts. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more!Four wheel drive inoperative and the 4WD service light will illuminate. Diagnosis may reveal that the ATC fuse could be open, possible DTC C0308, or various "U" codes may be set. ... I have a 99 chevy silverado 2500 and the service 4wd message displayed once and then never reappeared so I tried to engaged the 4wd and noticed all …2007.5 Silverado 2500HD. Code c0569. DIC - says Service 4x4 system. Have checked all grounds. With prior problems, have replaced chassis wiring, ABS module,Trailer Brake control module, and TCCM module. Transfer case has been checked for free movement. and all connections are ok. All modules have been updated with latest programing.About a week after getting it, I saw the "Service 4WD" dash message. After a lot of switch checking and replacing, finding out that wasn't the issue and re-installing the old switch in the dash, I figured out it was the ground on the front bumper. I had already cleaned, sanded, and coated the grounds under the driver side door at the frame, but ...I have a 2004 Chevy Silverado 1500. SERVICE 4WD message has been popping up for a while. most times i can turn the truck off hold the 4wd button while turning truck back on and it will work just fine. ... I have 2002 chevy silverado 1500 with 115,000 miles the service 4wd light comes on intermittenly.Hi, need some suggestions. 2013 Silverado 1500, 5.3 V8. Service 4wd message popped up on dash out of the blue. It's summer and have been running in 2H. Have not used 4wd for several months. It has the dial selector and those light up briefly when starting truck, then only the 2H stays lit, correctly.It’s official: a fully electric Chevy Corvette is coming — with new battery technology to boost its range, acceleration and efficiency. When it arrives, the battery-electric sports...The weight of a Chevy Silverado varies based on the model, cab type, bed size and engine type. For example the 2015 Chevy Silverado 1500 with a regular cab and long box weighs 4,68...Out of 4LO, Service 4WD Message Displayed on the Driver Information Center (DIC), Malfunction Indicator LAMP (MIL) Illuminated - DTCs P17D4, P215B, P279A and/or P279B Set Brand: Model: Model Year: VIN: Engine: Transmission: from to from to Cadillac Escalade 2014 2020 Chevrolet Colorado 2015 2019 Silverado 2014 2018 Silverado LD 2019 2019 ...The Silverado EV 4WT is ready to go the distance, offering an impressive EPA-estimated 450 miles of range.†. Plus, you'll get electrified performance with electrifying capability, including up to 10,000 lbs. of max towing capability.†. EXPLORE SILVERADO EV WT. Preproduction model shown. Actual production model will vary.Save up to $12,737 on one of 49,563 used 2022 Chevrolet Silverado 1500s near you. Find your perfect car with Edmunds expert reviews, car comparisons, and pricing tools.2011 Silverado 4x4 Z71. Mods: TSP Tune. TSP stage 2 low lift 212/218, .550/.550 LSA 12. Port/Polished Heads. DoD/AFM delete kit. K&N 71-BlackHawk cold air. Flowmaster Super 40-Will upgrade LT and Magna Flow once I have to stop fixing random crap on the truck. Sort by Oldest first.My 2006 Chevy Silverado 1500 is showing service***** I had the codes read at a service center and the code that came up was C0040 will this code make the service 4wheel drive come on? ... I have a 2003 Chevrolet Suburban and there is a red light on between the 2WD and 4WD high button.To reset the 4WD service light on a Chevrolet Silverado 1500, follow the steps below: See also Decoding Ford's Interior: A Handy Trim Code Chart. 1. Start by …Feb 13, 2023 · 3 posts · Joined 2020. #1 · Feb 13, 2023. I have had the Service 4WD message on my 2009 Silverado LTZ for the last year on and off. I have had it into the shop several times and replaced the encoder motor, front actuator, cleaned up the ground wire, traced most of the wire and still no joy. The TCCM will throw a "C0379-01 Front axle system ...However, the day after I bought it, the "Service 4wd System" message popped up. I took the transfer case out, did the pump rub fix and installed a new (doorman because I couldn't find anything better) shift motor and encoder to put in there. Boom. Problem solved! No more "Service 4wd System" messages and everything worked perfectly!3 posts · Joined 2015. #1 · Jan 12, 2015. My 2014 Silverado transfer indicator switch is set to AUTO and the transfer case is stuck in 4 high. This occurred recently when bad weather arrived here in Michigan and I set the switch to auto. Interestingly, it also happened not long after I took my truck into the dealer for the …I have a 2006 Silverado Z71 and the 4wd Service light is on intermittently. When it is on the electronic shift will not work. Submitted: 16 years ago ... I have a 99 chevy silverado 2500 and the service 4wd message displayed once and then never reappeared so I tried to engaged the 4wd and noticed all the XXXXX XXXXXghts that indicate ...I'm working on a 2000 silverado, 1500 4x4, 5.7 l. with the service 4wd light on... I have replaced the transfer case ... I have a 99 chevy silverado 2500 and the service 4wd message displayed once and then never reappeared so I tried to engaged the 4wd and noticed all the XXXXX XXXXXghts that indicate which mode the dri ...Only issue is the service 4 wheel drive light in dic.& 4 wheel drive does not work. My truck is a LMM. They used a GMLAN low speed and high speed bus. You newer one should be a CAN bus. Next time you see the message check to see if you can change settings on your climate control, turn signals work and door lock and window open.2003-2004 Chevrolet Avalanche, Silverado, Suburban, Tahoe 2002-2004 GMC Envoy, Envoy XL ... or the 4WD/AWD system may be inoperative and/or the service 4WD light is illuminated. The condition is typically intermittent and always occurs at key-up. Upon investigation, the technician may find DTC C0550 set. ...Chevrolet is an American icon, known for the Camaro, Corvette, Malibu, Impala and more. Take this quiz to see if you can recognize the most memorable '70s Chevys! Advertisement Adv...Started the truck and the 4lo started flashing. Shifted to 4hi and I could hear the servo move. Shifted bad to 2hi and the servo moved and the 4lo light started flashing and the servo moving. Shut truck off. Popped the hood and took fuse 10 out of the fuse box on the left side fender well.It's 2002 Silverado Z71 with 160,000 miles. Truck is stuck in 4wd and I've have a service 4wd light I can't get rid of. I don't get any lights from the transfer case switch anymore except on start up they flash quick. Here's what I've done thus far... -New transfer case switch. -New TCCM (599-105)from Summit. -New actuator.12 posts · Joined 2023. #1 · Jan 15, 2023. Bought 06 Silverado work truck used, 4x4 engages in both four high and low but no 4x4 indicator illuminates in the instrument cluster. Read other threads on this forum regarding manual shift transfer cases an no indicator light but did not see a successful repair.Models: 1999-2002 Chevrolet and GMC C/K Pickup and Utility Models (Silverado, Sierra, Avalanche, Suburban, Tahoe, Yukon, Yukon XL) with Four Wheel Drive and NVG 236/246 Transfer Case (RPO NP8) Condition Some customers may comment on the Service 4WD indicator illuminating. Upon investigation, the technician may find DTC B2725 set. Cause. 2001 Silverado LS Z71 5.3L Problem - 4WD noAnyone with a Service 4wd light might be money ahead I've searched the forum but didn't find an answer. This is what happened. I have an oil change apt today. Before coming in to the dealer I went home to restore my trucks factory program with the diablo sport intune. After it was done, the "service 4wd" light was on. I cleared it and started... Disconnecting the battery can clear the Serv 4WD on 4 Jan 2014 ... Chevy GMC No 4X4 - Service 4X4 System. The Car Doctor ... Chevy Silverado 4 wheel drive service. Toly ... 2017 GM Truck Service 4WD Message C0392.it could be the switch. the switches (windows, door locks, 4x...) were common failure points in the early 2000s. i got one out of a junk yard to replace the switch in my old 01. it cost less than $10, so it was a low risk fix. worked great for the rest of the time i had the truck. 2015, 1500, Z71, Crew Cab, 6'4" Bed. So my service 4wd light is on 2004 Chevy Silverado...
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