Step 1 – Check the transfer case selector switch. It is located on the left side of the dashboard. How the transfer case selector switch behaves can be your first clue that your 4WD system has a problem, and also what might be the possible cause. Figure 1. Transfer case selector switch (on the right).My 4wd works perfectly but at random times the service 4wd warning comes on and it doesn't let me switch from 2wd to 4wd. ... 2013 Silverado 1500 LT, Z71, 5.3L, 6L80e ...5 posts · Joined 2012. #1 · Mar 22, 2012. My research has lead me to damn near commit myself to the nearest mental institution. Service 4wd light pops up, I hop online and crawl forum after forum after forum. The common theme was to pull codes. Code comes back c0379 and dealership says replace actuator. I buy the part and replace myself.Features. 360°. +474. Average. 7.5. out of 10. edmunds TESTED. The Chevrolet Silverado 1500 stays true to its old-school roots, and the latest updates to the interior and technology do a lot to ...Aug 7, 2003. #1. I searched for this topic, but all were old. This afternoon I ran into a. heavy rain and stopped at a gas station to fill up. When I started the AV and put it in drive, the "Service 4 WD" message appeared in the message center. None of the 2 or 4 WD buttons would light up. I shut the truck off and restarted, but the same results.1. Defective or malfunctioning transfer case motor: The transfer case motor is responsible for engaging and disengaging the 4WD system in the Silverado. If it becomes faulty or fails, the 4WD service light may illuminate. 2. Faulty 4WD control module: The 4WD control module is the electronic component that controls the operation of the 4WD system. If there is a problem with the module, it may ...I bought my truck in November of 2009 and with the horrible winter we had last year I got use out of the 4 wheel drive system. Shortly after using the 4 wheel drive a few times I started getting a "Service 4 Wheel Drive System" message on the dash display. When the message is displayed I can not shift into or out of 2wd, auto, 4H or 4L.And the both have a total of 150,000 miles between then and costed 1/2 the cost. (Just Venting)... But if the 4WD is covered under Powertrain Warranty ill be a happy man. 2009 GMC Sierra SLE (Crew Cab) | 5.3 L, 6-spd | 3.42 Gears | AFM.David 2004 Silverado 2500 Crew Cab 4x4, AMSOIL EA air filter, Throttle body spacer, Spintech exhaust (true dual to 2 in 1 out muffler), 6" ProComp lift (add a leaf and 5" superlift rear block), Bilstein shocks, 35's (Cooper Disoverer AT3) and 4.10 gears, Rhino Liner, EGRUSA fender Flares and widow visors, firestone airbags w/onboard air …Silverado 2014 2018 Silverado 1500 (New Model - 12th VIN Digit = 7) - 4WD 2019 2019 Silverado 1500 (New Model) ... 4WD engaged and goes away when switched back to 2WD. ... service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a ...Everything I can find online via Google and Youtube, all say that the Service 4WD light on dashboard is for the selector switch and once changed, it will all work again, and no message. Didn't happen for me. Most guys on the youtube videos, even said that they changed out the transfer case, actuator, and the module thing behind the selector ...Synthetic Grease with Teflon, Superlube® GM P/N 12371287 (Canadian P/N. 10953437) or equivalent. Chevrolet recommendations and specifications for oil and fluid for 2004 Silverado 1500. Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 2004 Chevrolet Silverado ...2003 silverado 4x4 pickup,4wd not working ,service 4wd light on. select switches do not light up or appear to be - Chevrolet 1999 K1500 question. Search Fixya. Browse Categories Answer Questions . 1999 Chevrolet K1500 ... Apr 04, 2013 • 2003 Chevrolet Silverado 1500. 1 helpful. 2 answers.Get the most useful specifications data and other technical specs for the 2004 Chevrolet Silverado 1500 Ext Cab 143.5" WB. See body style, engine info and more specs. ... Ext Cab 157.5" WB 4WD ...4wd Service Light and stuck in 4wd. Jump to Latest Follow 5K views 3 replies 4 participants last post by greyhoundjoe Jul 30, 2016. O. OrangeZ71 ...Oct 18, 2020. #1. Okay, I am stuck here. Replaced most common failure items, but still get a C0374 code. All is good in 2WD. If I switch to 4WD Auto, when I corner next, "Service 4WD" lights with code C0374. If I turn sharply, it starts crazy crowhopping as if it was in 4WD and not A4WD. It then stays stuck in A4WD until I stop and restart and ...May 1, 2023 ... so my question is it the module is it the shift motor is it encoder motor position sensor like there's no codes coming up for it or is it ...Hi all, New to the forum. Im having an issue with my 2014 gmc sierra 1500. We had a snow storm last week so I was driving in 4x4 auto. On saturday morning the roads were plowed so I went to switch it back to 2wd and it wouldnt do anything and a message popped up saying service 4x4. So now its stuck in 4x4 hi with the rear axle locked.Service 4wd light on. 2000 Silverado. Silverado & Fullsize Pick-upsThe Silverado has been one of the best selling trucks in the US for decades, and is truly proven to be "like a rock". Platform: Truck, GMT 400, 800, & 900. Chevrolet Silverado GMT800, GMT900, and K2XX 4WD General Information and Maintenance Schedule.2001 chevy silverado Service 4-wheel drive light came on, why. Answered in 9 minutes by: Chevy Mechanic: frank. The transfer case module has detected a fault and set a code that heeds to be read-the most common problem is the swutch on the dash and the sensor that is inside the encoder, frank, Chevrolet Technician. Category: Chevy.I have a 05 GMC, sierra z71 offroad package, and recently in the past week, the display under my tachometer says service 4wd. I checked and made sure it had plenty of oil in the transfer case, even filled it a little. It switches in and out of 4wd no problem (I have the push button style). ... 06 silverado ccsb lbz dmax aka beyonce efi live, s ...My truck is a 2003 Silverado 2500HD 4x4 Crew cab 6.0 litre engine 4L80-E transmission ... Along with the Service 4wd message, when I shift into 4wd it sounds like it is having a hard time doing it. All kinds of clanking noises. After it switches to 4hi or 4lo, it works good. When I put it into 4x I makeDec 9, 2019 · Hi all, New to the forum. Im having an issue with my 2014 gmc sierra 1500. We had a snow storm last week so I was driving in 4x4 auto. On saturday morning the roads were plowed so I went to switch it back to 2wd and it wouldnt do anything and a message popped up saying service 4x4. So now its stuck in 4x4 hi with the rear axle locked.Switches into 4wd fine, but when I switch back to 2wd it will not disengage 4High, the Service 4WD light comes on, and when I stop to put it in Park, the electric parking brake automatically engages without me touching it and it won't disengage unless I drive it forward. Chevy Mechanic: AhmedT111.It flashes "Service 4wd" when I start itb now. I unhooked battery overnight but it's still doing it. Not froze up as sits in heated garage. Is ...We have a 2004 Chevy Silverado 1500 and replaced the brake booster and there is still no brake pedal and the person said it needs a Vacuum Power … read more. Tim's Auto Repair. mechanic. High School or GED. 9,784 satisfied customers.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. ... 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 flatbed. Save Share. Like. C. cbull Discussion starterKB, 05/03/2018. 2004 Chevrolet Silverado 1500 4dr Extended Cab Work Truck Rwd LB (5.3L 8cyl 4A) 40 of 41 people found this review helpful. We purchased this used in 09 with 100k miles and it has ...Head Scratcher. 1 post · Joined 2022. #10 · Jul 1, 2022. I too am coming in late. I had a remanufactured transmission installed in my 2004 1500, and I now have the infamous Service 4WD message showing shortly after start up. It was not an issue prior to the transmission change. The switch seems to be working.Aug 5, 2014 · 1999 Chevrolet Silverado 1500. Asked by Thiel66 in Green Bay, WI on August 05, 2014. the lights on the transfer case selector switch in the dash no longer comes on. it does flash when turning the key to start the truck, but it remains in two wheel drive. Ive changed the selector switch, but that did not work.The 2020 Chevrolet Silverado is a fabulous choice if you’re searching for a reliable full-size pickup truck. Why? Because the Silverado is ranked in third place on the US News site...May 1, 2013 ... Chevy Silverado/ GMC Sierra Forum - Service 4wd message - I just started getting a message saying service 4wd on my 2006 Z71.Just bought my 04 lly in aug. Went to put it in 4wd yesterday and nothing. I searched the forum for similar problems with no luck. My 4wd light will light up as if it engaged. I can hear what I think is the actuator in the transfer case. Im not sure were to start with this and would love any help. And also I am not getting any warning light as ...Service 4wd light on. 2000 Silverado. Silverado & Fullsize Pick-upsThe Silverado has been one of the best selling trucks in the US for decades, and is truly proven to be "like a rock". Platform: Truck, GMT 400, 800, & 900. Chevrolet Silverado GMT800, GMT900, and K2XX 4WD General Information and Maintenance Schedule.Step 1 - Check differential code. For the 96-06 Silverado's, the factory limited slip differential will have a code of G80. The RPO code should be listed inside the glove box. If you purchased the truck used or can't find the code, proceed to Step 2 for another form of testing. Figure 3.Available summer 2024. When adventure calls, the new 2025 Silverado HD Trail Boss is the answer. First take the legendary Silverado HD style and capability. Then add off-road-ready performance features like Z71 shocks and suspension, skid plates and on-road/off-road tires. Now chart your own course for exciting new destinations.Eventually, the Service 4WD message began appearing on the dash. It is intermittent and completely random. Basically what happens is when I start my truck, I can shift between all of the 4x4 modes using the selector switch. After a short period of time, which can range from 15 or so seconds, to 30 minutes, the Service 4WD messages comes on the ...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 ...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 ...May 31, 2023 · 1029 posts · Joined 2016. #6 · May 31, 2023. Read this somewhere when mine was stuck in 4-Lo a few years back. Fuse-pull reset to wake up the transfer case control module: Turn the engine on, pull the ATC Fuse out under the hood, wait 30 seconds, re-insert fuse, check for lights on the switch. Sometimes works, sometimes doesn't.Dec 11, 2013 ... Hey guys, this morning went out to start my truck and the battery was pretty weak. 15 below zero temp. My 08 Silverado LT Z71 with 189K ...Save up to $10,104 on one of 47,852 used 2004 Chevrolet Silverado 1500s near you. Find your perfect car with Edmunds expert reviews, car comparisons, and pricing tools.Used 2004 Chevrolet Silverado 1500 Extended Cab pricing starts at $5,111 for the Silverado 1500 Extended Cab Work Truck Pickup 4D 6 1/2 ft, which had a starting MSRP of $25,090 when new. The range ...Aug 19, 2016 ... Brought the truck in last week for this problem. The fix according to the invoice was to update transfer case control module code k69. To no ...Find the best Chevrolet Silverado 1500 for sale near you. Every used car for sale comes with a free CARFAX Report. ... Purchased on 04/01/17 and owned in IA until 12/20/23; Last serviced at 166,095 miles in Harlan, IA on 03/28/24 ... CARFAX value is unique to each vehicle according to such factors as service history, accident history, and mileage.Mar 15, 2019 ... This has happened to me two times because of my truck going dead over a voltage drain issue (my radio). If you have a service 4 wheel drive ...Step 2 – Replace the 4WD selector switch on the dashboard. It might be faulty. This is an easy DIY repair that costs just $55 to $60 for parts. This easy-to-use plug and play replacement requires less than 15 minutes. If your truck is still under warranty, you can set up a service appointment to have your dealer complete the repair at no cost ...Detailed specs and features for the Used 2004 Chevrolet Silverado 1500 LS including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders, drivetrain and more.If no power, check the 4WD fuse for being blown or an open in the Brown wire. 3. Check for a chassis ground on the Black wire. 4. If OK, plug the actuator back in and probe a meter on the Light Blue wire. With the vehicle in Two Wheel Drive (2WD), there should be 12 volts there.The Silverado EV WT, launched last year for fleet customers, offers 510 hp and 615 lb-ft of torque. The line will sprout a Trail Boss variant next year. The Silverado …Truck has 117k miles now. I had service 4wd come up for a while now, all I did was checked transfer case oil level, which was good, and then just kept ignoring it by pressing "check mark" button to clear it from DIC. Message comes on now and then, some weeks more often than others. In 4 hi when turning it makes some grinding like noise.This scenario would explain the lack of lighting up any LEDs in my new 4WD Selector Switch, ($17) and the triggering of "Service 4WD" message warning. I need to replace a burnt wiring harness (13 wires) that comes from the TCCM. I am studying the 4WD Selector Switch and its 11 color coded wires. I am studying the Encoder Motor and its 7 color ...Save up to $9,992 on one of 8,901 used 2004 Chevrolet Silverado 1500 Extended Cabs near you. Find your perfect car with Edmunds expert reviews, car comparisons, and pricing tools.When your "Service 4WD" light or message is displayed, it indicates a problem with the 4WD system. At the same time, contrary to popular perception, this warning message does not mean that the service is due. Several reasons exist for the service 4WD light to appear on your dashboard. The following are some of the most common and essential.Rancho RS5000X Gas Shocks Set 1999-2007 Chevrolet Silverado 1500 4WD. 90. 50+ bought in past month. $26599. FREE delivery Tue, Apr 2. Or fastest delivery Mon, Apr 1. Only 4 left in stock - order soon. More Buying Choices. $249.95 (4 new offers)4 Inch Lifted 2021 Chevy Silverado 1500 4WD. 1. Lift. 4 Inch. Tires. 35x12.50R20 • Venom \Terra Hunter XT • Venom. Wheels. Arkon \Lincoln True Directional • Arkon. Wheels Offset.Please discard Corporate Bulletin Numbers 02-04-21-006D and 03-04-21-006 (Section 04 -- Driveline/Axle). ConditionSome customers may comment that the 4WD/AWD indicator lights on the selector switch do not work, or the 4WD/AWD system may be inoperative and/or the service 4WD light is illuminated. The condition is typically intermittent and ...Please discard Corporate Bulletin Numbers 02-04-21-006D and 03-04-21-006 (Section 04 -- Driveline/Axle). ConditionSome customers may comment that the 4WD/AWD indicator lights on the selector switch do not work, or the 4WD/AWD system may be inoperative and/or the service 4WD light is illuminated. The condition is typically …2005 Chevrolet Silverado 2500 LLY RC/LB ... My '04 "Service 4WD" message would pop up occasionally. It would reset with the button. After reading as many threads here as i could find, I pulled the switch from the dash and carefully took it apart. I put the solder gun to the terminals, added a small amount of solder to each to ensure a …1999 Chevrolet Silverado 1500. Asked by Thiel66 in Green Bay, WI on August 05, 2014. the lights on the transfer case selector switch in the dash no longer comes on. it does flash when turning the key to start the truck, but it remains in two wheel drive. Ive changed the selector switch, but that did not work.4 posts · Joined 2020. #1 · Jun 2, 2020. My 2012 Silverado 1500 (61K miles) greeted me with a SERVICE 4WD warning light this weekend. The 4wd selector switch is stuck in 2H and will not respond to other dial positions. I had not started the truck in nearly a month and probably only drove it 3-4 times in the last 3 months given everything ...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 article applies to the Chevrolet Silverado GMT800 (1999-2006). 4WD systems give truck owners unprecedented abilities when it comes to gaining traction, both on and off the road. But like most "upgrades," these systems also consist of numerous components, which over time will wear out andInternet suggested to pull the TREC 30A fuse for 30 seconds. This was supposed to cause a possibly sleeping Transfer Case Control Module ( located above driver knees) to reawaken and was supposed to trigger the 4WD switch to light up. Result: Upon startup, I hear grinding noise while in Park. The Selector Switch did not light up.I did look at the earlier thread on this topic. I'll present my situation and maybe someone can point me in the best direction to fix this. The "service 4wd" message has appeared 4 times in the past 4 days. For the first three times, I did nothing and when turning off and starting again it went a...i had the service 4wheel drive message come on in my message center/DIC replaced the switch and problem solved. check out this topic service 4wd nbs99 z71 325ci v8, stock 4wheel disc brakes, no cats, flow master classic 40 series, rhino line, custom fog lights, cb, bully dog tunner, 4:10 locker, airbag load leveling, 205,000miles.Buy 4WD Switch 4x4 Transfer Case Button - Replaces 15136039, 15164520, 19259313, 901-072 - Compatible with Chevy, GMC, Cadillac Vehicles - Silverado, Suburban, Tahoe, Yukon, Sierra - 2003-2007: Four Wheel Drive - Amazon.com FREE DELIVERY possible on eligible purchasesI have 2004 Silverado with this same issue (No lights on selector and no service 4wd indicator). i checked to make sure fuses were not blown already. I followed ylab's advice and pulled the fuse under the hood for the tcm. i now have Service 4wd on the dash and the selector lights up when keyed on but it is still not working.The "service 4WD" message is a warning that a problem exists in your truck's transfer case or computer system. To separate the ECM from the transfer case, pay attention to the listed signs of a bad transfer case. If you see this warning on your instrument panel, immediately take your Silverado for diagnosis.The two-speed transfer case has 2-high, neutral, 4-high, and 4-low settings. The controls for the Silverado transfer case are located to the left of the steering wheel. Consult your Silverado owner’s manual …2018 Silverado Service four wheel drive. Had an intermittent issue with a service four wheel drive on my 2018 Silverado, 6.2, 8 speed with 30KM (~20K Miles) and curious to know what the cause is. - I Parked my truck a couple days ago at work and had to use 4x4 to get it parked (loose snow with ice underneath) I forgot to switch back to 2 wheel.Dorman OE Solutions Transfer Case Control Module - Remanufactured - 599-114. Part #: 599-114. Line: DOR. 5.0. (1) Check Vehicle Fit. Transfer Case Control Module 4 Wheel Drive; With RPO Code: NP8 (2 Speed, Push Button Shift Transfer Case); Four Button Selection Switch.2018 Silverado Service four wheel drive. Had an intermittent issue with a service four wheel drive on my 2018 Silverado, 6.2, 8 speed with 30KM (~20K Miles) and curious to know what the cause is. - I Parked my truck a couple days ago at work and had to use 4x4 to get it parked (loose snow with ice underneath) I forgot to switch back to 2 …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.130 posts · Joined 2008. #1 · Sep 18, 2014. '07 Silverado throwing "service 4 wheel drive" message. 2 codes that come up are: B0392 and B0398. Replaced the Rotational Position Sensor with no change. Still getting message. No message, 4wd works. With message showing, doesn't work. It has the electronic 4wd. My mechanic is scratching his head.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 …Nov 14, 2022 · If the transfer case is operated in 4HI or 4LO, it will behave as a Part-Time 4WD system. If it is operated in the Auto 4WD mode, it will behave like an on-demand AWD system. This transfer case uses a clutch pack to allow for a difference in speed between the front and rear axles in the Auto-4WD mode. In the 4HI or 4LO modes, there is no ...1029 posts · Joined 2016. #6 · May 31, 2023. Read this somewhere when mine was stuck in 4-Lo a few years back. Fuse-pull reset to wake up the transfer case control module: Turn the engine on, pull the ATC Fuse out under the hood, wait 30 seconds, re-insert fuse, check for lights on the switch. Sometimes works, sometimes doesn't.Cost about $95 labor with taxes. I supplied the AMSOIL synthetic lubes for the job. 16 qts (4-gals) ATF for trans and transfer case + 5 qts gear lube + Wix trans filter kit. Total cost for parts = $230+-. Note - 2008 up trucks use ATF Dex VI in transfer case, prior models require special fluid but only about 1qt+.Sep 23, 2017 · On my 2004 Silverado 1500, every once in a while I will get the Service 4WD message on my DIC, and I will get a really strong smell of electronics burning. When I get it, I can still shift into and out of all the settings. 2WD works fine, 4HI works fine, 4LO works fine, and neutral works fine.Me, not so much. 2007.5 Silverado, service 4wd light, won't engage 4wd. Switch light shows it in 4wd, but just one rear tire spinning. I cleaned up the ground wire, then replaced the selector switch, then replaced the front actuator, then the transfer Case motor. Nothing. I'm still showing the CO379 code, and have no 4wd.My 4wd light is blinking in my 2003 Chevy silverado . 2003 Chevrolet Silverado 1500 HD. Asked by Visitor in Gaffney, SC on . December 24, 2018. ... 2003 Chevrolet Silverado 1500 HD Estimates. Fuel Filter Replacement ($206 - $266) in Salt Lake City, UT. Water Pump Replacement ($843 - $964) in North Branch, MN.It took $60.00 and 20 mins. to fix it. - malanpmech , Southgate, MI, US. Maximize. The 2000 Chevrolet Silverado has 10 problems reported for service 4wd light is on. Average repair cost is $70 at ...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.This article applies to the Chevy Silverado GMT800 (1999-2006). The transfer case is located to the rear of the transmission and contains two yokes. The rear yoke connects to the rear drive shaft, which is always engaged because it controls the rear axle in 2WD. When you switch the truck into 4WD, the transfer case control module forces the ...We have a 2004 Chevy Silverado 1500 and replaced the brake booster and there is still no brake pedal and the person said it needs a Vacuum Power … read more. Tim's Auto Repair. mechanic. High School or GED. 9,784 satisfied customers.Disconnecting the battery can clear the Serv 4WD on your Chevy Tahoe. First, locate the battery in your Chevy and remove the negative cable. Typically, the negative cable is connected to the black terminal with a “-” symbol. Simply loosen the clamp using an appropriate wrench and then pull the cable off the terminal.If your transmission fluid is low, the transmission may not be able to shift correctly. Plus, you can see and smell the fluid to tell if it is burnt. Add fluid to the correct level if low. Figure 3. Check your transmission fluid dipstick. If fluid level is acceptable, move on to Step 5. If fluid is burnt proceed to Step 4.After reconnecting the TCCM harness and the battery, you can start your vehicle and check for the “Service 4WD” message on the dashboard. If the message has disappeared, that means the issue has been successfully cleared. 4. Remove the Knee Bolster and Dash Bezel. First things first, you’ll need to remove the dash bezel.Again, one should turn and one should not (it is connected to the PARK pawl through the t-case). If the wheels turn, check the front driveshaft watch for turning. If front driveshaft is turning, the t-case is not in 4 wheel drive. If front driveshaft does not turn, you have a problem in the front diff, or with the passenger axle disconnect.04 Silverado 4WD noise and Service 4WD light. Okay, so I've got a little bit of a story with this, and some of the history so in case it is connected you might be able to help. 1) Off and on for the entire time I've owned my truck, (3 years probably) the "Service 4WD" light has come on. It always goes off when I turn the truck off and seems to ...4.7. Reliability. 4.7. Styling. 4.7. See More Reviews. See , silverado1500, chevrolet. DAVIDCORNISH April 3, 2018, 1:31pm 1. I have had the differential changed, but the truck, cooltc2004 Discussion starter. 199 posts · Joined 2013. #1 · May 10, 2, Location: Farmington, AR. Mileage: 157,487 miles MPG: 14 city / 19 hwy Color: Beige Body Style: Pickup Engine, Vehicles with Service 4 Wheel Drive Message and service bulletin. 200, Put it in myself and it only compounded the issue. So had to take the encoder motor back off, , Front Seats Manual Seats {CAUTION:You can lose control of the vehicle if you try to, 04 Silverado 4WD noise and Service 4WD light. Okay, so I've, 4WD not engaging. I have a 2000 Chevy Silverado 1500 4x4 with , Stuck in 4 low. 2007.5 vortec max. Had the truck in the garage , Duralast TwinTube Shock Absorber TS34-31351B. $6149. Location: Front, Head Scratcher. 1 post · Joined 2022. #10 · Jul 1, 2022. I too am c, Part #: 19419102. Line: ACD. Check Vehicle Fit. Brake Hydraulic , Chevrolet TSB 09-04-21-001. Some customers may comment that th, Please discard Corporate Bulletin Numbers 02-04-21-006D , My service 4wd issues and how I fixed itTransfer Cas, Now my Service 4WD light is on. I checked the wires r, 2005 Chevrolet Silverado 2500 LLY RC/LB ... My '04 "Service 4W.