Service 4wd light chevy silverado

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 ...

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.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.11 posts · Joined 2016. #1 · Sep 13, 2016. Back again with my 99 silverado. Thought it was fixed but i was wrong. Was driving the other day and i noticed my service 4wd light on in the message area. Light stays on all the time doesnt leave after turning truck off and back on. I have no indicator lights on the puch buttons for the 4wd.My 'service 4wd' light is on and the 4x4 doesnt work. It does have the auto transfer case with the 4 button switch. ... 2005 Silverado 2wd 4/6'd. 402ci LSx/4L80e/turbo 800whp, 20psi boost---- Build Thread 1982 2wd Chevy C30 Crewcab Dually, 454/Manual 2001 Audi B5 S4 . ... Chevy Silverado EV Forum 2K+ members. AT4X versions of the GMC Sierra and ...4wd service light. Jump to Latest ... hi,i have a 2019 silverado 1500 custom 4wd with 9000 miles.i used the 4wd for first time sunday.worked fine.went out today and the 4wd icon on the dash has a wrench on it and says service 4wd.anything i can do or does it need dealer service?thanx tim ... A forum community dedicated to Chevrolet Silverado ...Sep 18, 2014 · 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.Service 4WD Diagnosing. So recently the Service 4WD message has intermittently been popping up on the display in my truck. I am trying to figure out the cause. It simply seems to pop up the message, it does not, at least according to the indicator lights switch to any of the other settings from 2Hi. So far I have taken the switch out and hooked ...About 3 months ago the problem started. I would be driving and the electrical system would shut off for a split second. Dash lights would go out, cruise shuts off, radio stops, and then everything would come back on. It did this several times on a long drive. Dealership said it was a weak battery so we changed it. All was good for about 3 months.

2004 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 ...SOURCE: Service 4wd dash light comes on when I go into auto 4 and will switch back to 2wd until I shut the engine off. sound like problems in transfer case shift module. 2 Answers. Posted on Sep 16, 2009. SOURCE: 01 Chevy Silverado 4 X 4 not working. 4WD light. Having the same exact problem but with my 1999 escalade.Mar 24, 2016 · 2003 Silverado 1500hd service 4wd light coming on intermittent... throwing c0327 b0790 b2725...already tried replacing - Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website.How to fix your four wheel drive on your 2008 2009 2010 2011 2012 2013 2014 gmc Sierra duramax or Chevy k1500 k2500i am not liable for anything that happens ...DTC P2771 sets if one of the following conditions occurs: Condition 1. •The 4WD low switch is in 4WD low. •The transfer case is not in 4WD low. •The TCC slip speed is -3,000 to -50 RPM. •The transfer case ratio is 0.08-1.2, the transfer case ratio is the engine speed divided by the transfer case output speed.

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.83k miles on my 2020 Silverado with 6.2l. I just had service ESC, parking light, traction control blinking,check engine light solid. Loud clunking noise and sounded really rough after accelerating. Had it towed to the dealer and had to replace a bank of lifters, bent rod, rocker arm and cam shaft replacement.Mar 19, 2019 · ☕️Support my channel by donating on Kofi ☕️! I will be eternally grateful 💐https://ko-fi.com/lightoverdozThe issue was fixed by replacing the TransferContro...Service 4wd light comes on and indicator lights shut off when wet on a 00 chevy 1500 truck - Answered by a verified Chevy Mechanic. By chatting and providing personal info, ... I started my 2001 chevy pu 1500 silverado 4wd after a short stop at a store to find the abs light on.12K. 276K views 2 years ago. In this video I have a look at a 2013 Chevy 1500 that came in with a customer complaint of no 4x4, the service 4wd light on and a …

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10628888 - 4wd sign and tire of a big truck. If your "Service 4WD" light comes on, there's possibly something wrong with the four-wheel drive system (4WD), and you should have a certified mechanic inspect it. 4WD systems are complex, so this warning message serves as a caution. Some faults can lead to severe damage, but it's hard to ...2. 2003gmtrucks Discussion starter. 102 posts · Joined 2013. #1 · Apr 12, 2015. Hi, my truck is a 2003 GMC sierra z71 with the push button 4wd. I know my 4wd has been having problems because it only ever worked in auto but the buttons always engaged. Recently I have need getting service 4wd also. Ever since then, the 4wd buttons won't do ...Use the instruction manual if you are having difficulties locating it. Now, undo the negative wire from the battery. Give the truck some time to cool down. Keep the negative wire unattached for an hour or so. Then, connect it again and try turning on the engine. This should clear the 4WD service light.Internet 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.27 Nov 2021 ... ... products, services, or related graphics contained in this Video for any purpose. Any use of this information is at your own risk.

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 ...Service 4wd lightEngine check lights now gm trucks registered returned considered reason maybe vehicle very used some next but Chevrolet silverado 2014-present: why is my check engine light onCheck power steering level: 2014 chevrolet silverado 1500 lt 5.3l v8.Light Mode; menu Log in ... i have an 03 1500HD 4x4 and every once in a while "service 4WD" comes up on the dash, while its on the 4 wheel drive wont engage but when it comes off the dash the 4 wheel drive works as if nothing ever happened.. any idea on what could be the problem? ... A forum community dedicated to Chevrolet Silverado and GMC ...Used 2006 Chevrolet Silverado 1500 Extended Cab pricing starts at $5,625 for the Silverado 1500 Extended Cab Work Truck Pickup 4D 6 1/2 ft, which had a starting MSRP of $22,935 when new. The range ...They wanted $800 to fix it. The special thing about the 2007 Silverado 1500 that i learned is, one model has an Transfer Case Encoder Motor and one model has a Transfer Case Two/Four Wheel Drive Actuator Assembly, both do the same thing, but two very different locations and parts.2004 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. With new encoder moder connected switch blinks when key is turned on and can press button to shift to 2wd or 4 wd, but light just blinks and nothing happens.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.But before abs and brake light popped up 4wd worked fine no problems with transfer case. Most generic obd2 scanners only read engine codes from the ecm. Some will get transmission codes from the tcm. But to get abs codes that is another different computer, you need one that will read those codes from the brake control module (ebcm).37 posts · Joined 2010. #1 · May 6, 2015. Hello, i have a 2005 z71 silverado that has a 4wd service light. At first the light service light would come on with 4wd switch lights on but it wouldnt shift into 4wd if pressed. Then i would restart truck and it seemed like with a bump the service light would come up.The design and complexity of these transfer cases differ as per the application, but the electronically-controlled unit in the Chevrolet Silverado is amongst the most complicated. Meaning of Service 4WD Warning. The service 4WD warning light or infamous C0306 code does a good job of making the problem clear.Buy 901-062 4WD 4x4 Switch Replacement for Chevy Silverado 1500, 2500HD Suburban, Avalanche, GMC Sierra 1500, 2500, Yukon- 4 Wheel Drive Switch Transfer Case Selector, OE# 15709327, 19168767: Four Wheel Drive ... Fixed the "service 4wd" light in message center. The original equipment is known for having bad solder joints that crack.cleaned and tightened cables, no light. Chevy Mechanic: Gary. make sure the fuses called IGN1 and 4WD in the inside fuse box are not blown and both show 12 volts at them with the key ON and the fuse called ATC in the under hood fuse box the same way. if all 3 fuses check out not blown and 12 volts at all 3 of them with the key ON then the 4WD ...

8 Nov 2023 ... Chevy / GMC Truck: Service 4WD Message & No 4WD. South Main Auto ... Service Four Wheel Drive Light ON | C0396 | C0569 | Chevrolet Silverado 2500 ...

Hi, I have a 2015 Chevy Silverado 1500. 5.3 4wd. One day my service 4wd light came on and I noticed my truck was stuck in 4hi even though it's in the auto position on my 4wd selector switch. I changed … read moreStep 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 ...IF THIS VIDEO HELPED YOU SMASH THAT SUBSCRIBE BUTTON!-- UPDATE 3/22/2024 --1,000,000 VIEWS! Thank you everyone for the support!— UPDATE 3/12/2018 —Holy crap ...Chevy says the Silverado EV RST can get 34 miles per hour on Level 2 charging for a 13-hour recharge, but that’s using GM’s PowerShift Charger that can …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 flatbedCommon fix for 2002 and later model silverados with malfunctioning electronically controlled 4 wheel drive.The service tire monitor light is a warning bulb connected with the TPMS or Tire Pressure Monitor System, which notifies the driver of low or high air pressure in the tires. These sensors became especially popular on vehicles from the late 1990s onwards, and are a prominent feature on first generation Silverado 1500's.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 ...

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To recap, here are the steps in which you can successfully clear the Chevy Blazer Service 4WD light: 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 the Transfer Case and TCCM.Shift the lever from 2 to 4 high and you should be able to hear the axle actuator. It sounds like a little electric servo because that's pretty much what it is. With the engine running, you more than likely cant hear the servo getting power. The 4x4 light is dependant on the servo getting power.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 ...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 ...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. If i removed the ATC fuse in the fuse block, the truck goes back to 2wd. When the fuse is in, it is stuck in 4w Hi.2004 Chevy Silverado z71 ( service 4wd message The selector is not getting or no lights on at lights all came on as I'm starting the vehicle the fuses are good there are two fuses that I checked one under the hood and one on the driver side fuse box what I did I replace the switch assembly for the 4 x 4 and I replaced the transfer case module and I cleaned the two wires on the frame of the ...Meet the Experts. 2004 chevrolet silverado 4wd service light on, Scanned and got codes C0327, C0306, C0321, C0550, B0790 and B2725. What - Answered by a verified Chevy Mechanic.2000 silverado 5.3 4x4 service 4wd. Service 4wd light came on and the lights went out on the buttons so I bought a new button panel. Hooked it up and still have no light coming on it. Checked the 4wd fuse and the transfer case fuse they were good. What else could it be for the lights to nit even come on?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. ….

Dec 14, 2020 · takingit2dmax Discussion starter. 4 posts · Joined 2020. #1 · Dec 14, 2020. Message on my 2014 Chevrolet silverado 2500hd Saying Service 4 wheel drive is on and service stability, on button to switch to 2x4 and 4hi and 4low Looks like no power to button doesn't light to it. Like.2001 CHEVROLET SILVERADO. Drive Train Axles Bearings problem. 2001 Chevy Silverado V8 Four Wheel Drive Automatic. The service 4 wheel drive light came on. I have replace the dash switch. Which did not fix the problem. I have no lights come on the switch and no 4 wheel drive engaging. I have been told probably the encoder motor is bad or …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. ...Mar 29, 2017 · 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 ...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.Four-wheel drive service message troubleshooting for a 2001 Chevrolet Silverado 1500: 1. Check the fuse: Start by inspecting the fuse related to the four-wheel drive system. If the fuse is blown, replace it with a new one of the same rating and see if the issue persists. 2.I recently purchased a 2006 GMC Sierra Z71 and I have a "service 4wd" on the dash. The 4wd switch buttons don't light up. They will light up when I turn the key on but then they disappear and the "service 4wd" shows up on the dash. ... A forum community dedicated to Chevrolet Silverado and GMC Sierra pickup owners and enthusiasts. Come join the ...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 ... Service 4wd light chevy silverado, so auto 4x4 engages the 4 wheel drive system the same way the actual 4x4 does. what it does not do is apply the clutch pack in the transfer case. the car drives with the front differential engaged and then ONLY activates the clutch pack (to 100%) in the transfer case when there is slip. 4x4, on the other hand, activates the same things except ..., Meet the Experts. 2004 chevrolet silverado 4wd service light on, Scanned and got codes C0327, C0306, C0321, C0550, B0790 and B2725. What - Answered by a verified Chevy Mechanic., Feb 19, 2017 · 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., Some tips and tricks and what I have learned troubleshooting the extremely faulty four wheel drive system in Chevy Siverado and GMC Sierras. I do this all w..., 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'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., Duct tape is The Force. It has a light side, a dark side, and it holds the Universe together Current rides. 96 Chev K2500 Silverado Ext Cab Full size bed 311,000 Miles 96 Chev K1500 Silverado Ext. Cab 6' bed 113,000 Miles (pending) 72 Triumph TR 6 38,000 miles 2008 HD Superglide Custom 82 David Brown 1194 (Tractor) 2008 TaurusX 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., Service 4wd light comes on and indicator lights shut off when wet on a 00 chevy 1500 truck - Answered by a verified Chevy Mechanic. By chatting and providing personal info, ... I started my 2001 chevy pu 1500 silverado 4wd after a short stop at a store to find the abs light on., 8 Mar 2023 ... If you're having 4x4 engagement/disengagement issues, a "Service 4 Wheel Drive" message, or getting diagnostic trouble codes C0378 or C0379, ..., Sep 9, 2016 · Vehicles that have four wheel drive systems tend to have a separate light to indicate an issue with the system. Usually labeled “Service 4WD”, when this light comes on, a code will be stored in the computer’s memory to help identify any issues. Depending on the problem, the four wheel drive may be disabled temporarily., On my 2000 Chevy 2500 -I have a service 4wd light on my dash and no lights on my push button four wheel drive switch. I have replaced the switch, indicator motor and had a mechanic check all the wires. ... 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 ..., Joe Lamb. 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 https://www.6ya.com ..., Vehicles that have four wheel drive systems tend to have a separate light to indicate an issue with the system. Usually labeled “Service 4WD”, when this light comes on, a code will be stored in the computer’s memory to help identify any issues. Depending on the problem, the four wheel drive may be disabled temporarily., ESC Warning Light. If your Chevrolet Silverado 2021 is experiencing an ESC warning light, you may be in need of service. This warning light comes on as a result of the vehicle's traction control system. When the ESC fails to control the wheels, excessive heat is produced, causing the tires to spin and cause damage., 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 a, Got a 1999 Z71 about 3 weeks ago, and have been super happy with it. It has push button 4wd and has worked perfectly fine until last night. I tried to put it into 4wd LOW. Sitting still, put it in neutral, pressed the button and the light flashed and stayed flashing. Up until now it would clunk slightly and the light would stay solid and it ..., #2 · Aug 5, 2023. Diagnose instead of throwing parts at it. Lift up one of the front wheels and see if you can spin it by hand. If so, the truck is in 4wd mode, and you don't want to …, 03' Chevy Silverado 3500 8.1L. Save Share. Like. ... When the service 4wd light was on, the cruise control did not work either. ~the Captain 2016 Chevy 2500Hd, PPEI tuned, CAT back exhaust, 2.5" Zone Level Kit, Moto Metal 970 wheels/Nitto Terra Grapler G2's, Custom Cab lights, LED Fogs, Resonator deleted ..., How to Clear Service 4WD Light on A Chevy Blazer 1. Refer to the Owner’s Manual. Let’s begin with the first recommendation. It’s always a good idea to consult your Chevy’s owner’s manual when dealing with any issues, including how to clear the Service 4WD light. In any case, if you’ve misplaced your physical copy, there’s no …, 153 posts · Joined 2012. #1 · Oct 24, 2012. Hopped in my 2008 Silverado LTZ Z71 and drove up to the hardware store earlier today. It's approximately 1.5 miles. Had no issues. Came home and realized I forgot something. Started the truck back up and immediately notice the "service 4 wheel drive" message. Hmmmmm.... truck is set to auto., the wire attachments and then reattach the ground wires to the frame (time to. complete - less than 5 minutes). Second you will need to replace the 4wd selector. switch in the dash. You can purchase this online from Amazon (Dorman 901-062. 4-wheel drive switch for $31.15 - no tax or shipping and handling)., 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 ..., Silverado 4wd red chevy service light truck cajun 1500 trucks dbl lt 2001 chevrolet silverado lt ext cab 4wd Pre-owned 2016 chevrolet silverado 1500 4wd crew cab 143.5 lt w/1lt Silverado chevrolet 2500hd cab regular truck wt specs 2002 wb 4x2 ft box models reviews features price overpay don model. Fix Workshop. Home;, 83k miles on my 2020 Silverado with 6.2l. I just had service ESC, parking light, traction control blinking,check engine light solid. Loud clunking noise and sounded really rough after accelerating. Had it towed to the dealer and had to replace a bank of lifters, bent rod, rocker arm and cam shaft replacement., 2004 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 2004 chevy silverado.. the service 4WD comes on in the service center on dash. None of the lights are on in the 4wd selector switch., Service 4WD light on, can't shift into 4WD, 4WD shift doesn't work, transfer case motor doesn't work on Avalanche, Silverado, Suburban, Tahoe, Ram, Sierra, Yukon, Check engine light on Cardone, a leading manufacturer of rebuilt transfer case motors has issued a service bulletin advising shops of a reason why a brand new Cardone motor may ..., ShaneB94. 135 posts · Joined 2015. #11 · Dec 5, 2015. Well if the motor is binding at some points, it would be intermittent but noticeable to the eye. If you want to check for the short all you would really have to do it switch the settings and look for voltage. The amount of voltage will vary between 9 - 12 volts., How to fix and diagnose airbag SRS dash light on a 2008 Chevrolet Silverado 1500 pick-up truck. Using a icarsoft 900 scanning tool.impact sensor., Plugged back in, and voila no service 4wd or ABS light and full blower motor functionality. Popped plug back off and on a few times to make sure I had everything seated, added some dialectic grease and reassembled for final (lol) time. I did pickup an ignition switch just to have as it's the OEM piece (truck has 200k). View attachment 875201, Service 4WD light. Jump to Latest Follow ... Chevy Silverado and GMC Sierra Forum. 1.4M posts 181.8K members Since 2009 A forum community dedicated to Chevrolet ..., 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., I have a 2000 Chevy Silverado Z71 with ATC. Recently the Service 4WD light came on so I cycled it through 2WD, 4HI, 4LO, AWD and back to 2WD and it worked fine and the light went out but only for a da … read more