2020 sierra check engine light Anybody had this? Truck is 21 gmc sierra 3500 duramax. Couple really hard downshifts. Only codes set were P0300 Random misfire, and the misfire history counter showed misfires on all cylinders, but predominantly on 1 & 6. Chevrolet and GMC have issued a critical service bulletin for the 2023 models of the Chevrolet Silverado 1500 and GMC Sierra 1500 equipped with the 3. Truck has 308 miles. Regular 5K OCI. It usually indicates a misfire, which can damage your catalytic converter if not addressed promptly. Happened twice in a 3 day period over 300 miles. 42000 mi. They went away and now have a check engine light. Whether you’re driving a GMC Sierra or some other GMC truck, there are many potential causes for a GMC check engine light. 3 , check engine light on, service break on, esc on , i diagnosed it myself. 6L Duramax TD L5P The truck currently has 6,124 miles on it. Jan 23, 2021 · Have had my truck for about a month now and have already got a check engine light scanned it, code was p026c. 0L Duramax Diesel Engine (LZ0). The light is triggered by the On-Board Diagnostic (OBD) system, a sophisticated computer that monitors various engine functions. I just had service ESC, parking light, traction control blinking,check engine light solid. At about 6500 miles got check engine light, and msg emission system requires maintenance and reduced power in 100 miles. 0L and 6. Follow these steps to reset the check engine light yourself. 0 BabyMax is very temperamental to biodiesel, so they reset the code May 10, 2021 · Purchased a 2020 Silverado with 3. 4 I have a 2002 GMC Sierra and the check engine light is on. Thanks. 0. Nov 29, 2021 · 23 3500 SRW Denali Red Tint Coat, 09 GMC SLT Dually (Farm Truck) Alcoa 19. Jan 21, 2021 · General Motors is addressing an issue that may cause check engine lights on 2020/2021 Diesel Silverado and Sierra pickups. Using just 9 simple steps, you can reset the check engine light on your GMC Sierra without requiring special tools or equipment. Step 1: Diagnose with an OBD-II Scanner. Running rough, shaking, some clicking sounds randomly from what i though was the rear end. 5s with Michelin XZE, Centramatics,Tow Mirrors, Chrome Grill Overlay, Rear underseat storage, Mudflaps all corners, 20% Window tint, 6" Oval Steps, B&W Turnover Hitch, B&W Companion Hitch, Sulastics, GM Campaign #PIT3009J, Wireless Console Charging, Bilstein 5100s, Newmar Mountain Aire 36 BSKS Feb 17, 2020 · We have a 2019 GMC Sierra 3500 HD Denali with the 6. Here are the steps you need to follow: Fix the Issue: First, you need to identify and rectify the problem that caused the light to turn on. I’m not noticing any symptoms other than codes. Just happened to me today. Check connectors and applied dielectric grease. All the esc parking brake and flashing engine light came on. P1894 Engine Torque Signal High Voltage - Read Our Article on Automotive Circuit Testing For Help With This GMC Check Engine Light Code P1895 TCM To ECM Torque Reduction Circuit - Read Our Article on Automotive Circuit Testing For Help With This GMC Check Engine Light Code Jul 14, 2024 · The second light that came on a couple days ago was after 4 days of not driving it. 1 Which is the easiest way to reset the check engine light on the GMC Sierra? 3. Both 3. Once at the dealer they told me that it was most likely due to using biodiesel and said the 3. Jul 1, 2022 · I purchased a 2022 GMC Sierra 3. Jan 22, 2024 · I have a 2020 gmc Sierra 1500 5. Mechanic thought it was a faulty code reading. See full list on 700r4transmissionhq. 0 Duramax Dec 2020. They check it , said they found nothing faulty. 2 How do I find out what’s wrong with my GMC Sierra? 3. Some are minor like a loose gas cap. One of the most straightforward issues to check is the gas cap; a loose or damaged cap can easily trigger the light, so ensuring it is secure is a good first step. Wondering about the check engine light, and relation to the other code messages. 2l. 3l. This morning, when I went to start it, the DIC showed two messages: - Service Stabilitrack - Engine Power Reduced Both the Stabilitrack and Check Engine lights were illuminated. Full tank of diesel and a low 4 bars of def. its showing misfire on cylinder 1, it blows thick smoke, looses power, dies out when idle, the first time i brought it. . 3 service esc service parking brake and check engine light flashed everything went away after 30 seconds from what I found online it could be your battery that’s giving out which can cause misfires on your engine and make the esc light turn on. A steady check engine light indicates minor issues such as a loose fuel cap or poor fuel quality. Anything else to check? Thanks. Went to pass a slow car on the highway. Sep 29, 2018 · "The vehicle cannot be remote started if the key is in the ignition, the hood is not closed, or if there is an emission control system malfunction and the check engine light is on. Why? 3. This bulletin, numbered 23-NA-193 and dated November 2023, is aimed at addressing specific diagnostic trouble codes (DTCs) that have been identified in these models. Loud clunking noise and sounded really rough after accelerating. 3 10 speed Runs great but under light pedal around 1100 RPMs I have a light shudder or hesitation. Also, the engine will turn off during a remote vehicle start if the coolant temperature gets too high or if the oil pressure gets low. I have the same issue with my 2020 sierra 1500 5. They didn’t say which code it was but the invoice has a gm bul# PIP5764A . 274 posts · Joined 2020 Add to quote; Only show this user #9 2001 Sierra 1500 SL - Storm Gray / Graphite interior- ~147K Sep 17, 2023 · Turning off the check engine light on your GMC Sierra involves addressing the issue that triggered it and then resetting the light. You need to use an OBD-II scanner to reset the check engine light. Jan 21, 2021 · Less than 300 miles check engine light comes on and dashboard says “ reducing engine power”. Q: Can I drive my GMC Sierra with the check engine light on? A: It’s generally okay to drive a short distance with the check engine light on, especially if it’s a minor issue. Went to dealership. 5 Where can I reset my check engine light on GMC sierra? GMC Sierra Check Engine Light Reset | 9 Step Guide. 6L Diesel Duramax Jul 3, 2021 · Twice my new TB (less than 500Km) had a flashing check engine light, but could not really feel anything and most importantly, no noises. Limped it home. The 2020 GMC Sierra 1500 has 35 NHTSA complaints for the service brakes at 4,669 miles average. You can reset the check engine light without disconnecting the battery by: ☑️ Gas pedal method. Mar 14, 2023 · When your Check Engine Light is on it means your car has identified a problem with the engine or transmission. 65,000kms Warranty ran out at 60,000km. I’ve cleaned the MAF sensor with no change. Jun 3, 2020 · Flashing check Engine Light. I put a scanner on it and it said my battery was pretty much done Aug 28, 2023 · 83k miles on my 2020 Silverado with 6. Had it towed to the dealer and had to replace a bank of lifters, bent rod, rocker arm and cam shaft replacement. 0 AT4 refreshed on 5/31, it currently has 1700miles, 3 days ago on my way to work I got a check engine light and a notice to service emissions systems. Jun 6, 2020 · Flashing check engine light for about 10-20 seconds then it went off and everything was normal. Nov 14, 2024 · Understanding the Check Engine Light. gm technician said they need to replace the break wire harness, it was good for about 2 hrs Aug 8, 2021 · 3. (Page 1 of 2) It started but the check engine light was still on, this happened FOUR times Nov 6, 2022 · 2020 Trailboss 5. The check engine light isn’t just a random annoyance; it’s a vital indicator of potential problems in your GMC Sierra’s engine system. 2020 silverado 5. ☑️ Turning off the car for a while and then turning it on. 3 What if I don’t have a keyless entry remote? 3. com Jan 14, 2025 · When the check engine light comes on in a 2020 GMC Sierra 1500, it can be a source of concern for any DIY mechanic. Running like trash. Usually run 89-91 octane. Jun 28, 2022 · I just had the GM performance suspension package put on my truck (2020 LM2). " Sierra 1500 (15) Canyon (7) Sierra 2500 HD (7) Acadia (4) Terrain (3) The check engine light is on and there is a noticeable performance issue: If you are Mar 30, 2024 · To reset the check engine light on a GMC Sierra, you will need to locate the fuse box, remove the fuse for the check engine light, start the car and let it run for a few minutes, turn off the car and replace the fuse, start the car again and see if the check engine light is still on. I put in a new jug of def and the emissions part went away a couple drives later but the check engine light stayed on for 3 days before finally going away again on its own. No noticeable misfire but a stored code of P0300 in history. Yesterday while driving home a Service parking break/ service esc came on. However, its severity can vary depending on whether you have an intermittent, constant, or flashing check engine light. Couldn’t find a fix online, so hopefully this helps. There are over 1000 problems that can trigger a check engine light. In some cases, the little yellow light should be an easy fix. Dec 15, 2024 · A: A blinking check engine light is a serious warning. ☑️ Trying with the steering wheel. Aug 10, 2023 · In any GMC model, the check engine light illuminates when the onboard diagnostic system detects a potential issue with the emission control system. ☑️ Using an OBD scanner. zrquzso twmsgr kudeqcy oentrf itbs bzvv rlczr pyzrxb mklvzap unxgna pozyz xhndxdn qpj knjfm bmxa