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Showing results for tags 'cel'.
Found 7 results
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2015 Sierra SLE 5.3L w/ 104k miles. I have been getting nonstop CEL codes for the past few months. After replacing all 4 O2 sensors, purge valve evap, PCV, thermostat and cat, all codes go away after I clear them only to reappear when I drive it next. Took it into a shop and they can find no vacuum leaks. Current codes are P0172 bank 1 too rich, P0175 bank 2 too rich, P0430 catalyst system efficiency below threshold bank 2. Truck drives fine most of the but rpms dip and at times it feels like there is a misfire, plugs were replaced at about 80k. Any help would be greatly appreciated. Thanks.
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I was driving yesterday (35-40 mph) and out of nowhere the CEL came flashing on and the display said something to the effect of (service transmission, service traction control, and forward collision system disabled/unavailable). Having not even logged 5,000mi on the ODO my stomach sank. I continued along driving and dismissed the error messages. I came up to the next red light and the CEL flashed a few more times, then went away. Absolutely zero performance issues before / during / after the warning lights / messages. I have met the forward collision system unavailable message before, but that was due to a small bit of ice on the windshield back in February. Has anyone ever run into this before? I'm in MD and the pollen has accented the onyx black paint into what looks like a bumblebee's rear end. Could excessive pollen blocking a sensor be the culprit? I love the truck (major upgrade from the 2011 Subaru), but it would be a real shame if I'm going to have to make regular trips to the dealer to fix issues like this. (i guess that's American engineering for ya). Appreciate it if anyone can share a similar experience and what ended up happening. -
Just installed s&b cai, and truck stalls out after start, when it doesnt it idles rough and sometimes kicks when starting to drive, it seems alot slower and is throwing me a check engine light please help! What do i do -
Fresh after the 3 year warranty expired I got my first check engine light; it popped up on the first start of the day, not while driving. The scanner showed a historic fault of P0499, which is one of the ever-popular evap system codes. I did a close visual of the vent and purge solenoids, wiring looked OK and there was nothing obviously wrong, so I'll have to do a deeper dive. I did quite a bit of research and I figured out the basic troubleshooting using a 12VDC battery and a multimeter, but I'd like to know which valve is the usual culprit for this code so I know where to start. I only got the P0499 code, not the more common P0449. Also, I tried clearing the code with my scanner, but the CEL never turned off. I've cleared plenty of codes in the past and the light always went off at least for a little while, but not this time. I'll be pulling the negative battery cable for troubleshooting, I'll see what that does. Side note: I tried removing the intake plenum from the throttle body, usually a simple procedure but for some reason the bracket on the passenger side above the alternator wouldn't let go. I had the hose disconnected, but even after some healthy pulling it wouldn't come loose. There's no fastener, it's just a pressure fit. Do I need to use more force? Thanks in advance for any input. -
I did a search here for it but came up empty. Last week, my Check Engine Light came on briefly while on the highway. Just before and after that I noticed a reduced lack of response to giving it more throttle. I had a local guy pull the CEL code and said it came up as #7 Cylinder Misfire. I'm at 55,000 miles and am off warranty. The truck is a '14 with a 5.3. Any suggestions, or thoughts how serious this may be ?
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Howdy all, I’m looking for some help with a new to me truck, that looks like it has a few issues to fix. It’s a 2014 Silverado Z71, with just under 150k. The problems I’m having so far are: 1. After sitting for a little while (hours -overnight) it turns over for several seconds before starting. If I just ran it, it starts normal. 3. sometimes driving it feels like it doesn’t accelerate or shift soon enough at slower speeds. 2. When going in gear it takes a while to go it seems like, or when switching from reverse to drive it seems to not start going immediately. Two days ago I checked the codes and there was one for EVAP P0446 evaporative emission system vent control circuit , and P0430 (system efficiency below threshold bank 2) This morning I go to start it and it turns over 5 or 6 times (about) and starts, and then the CEL starts blinking. I get the codes checked and here is what it has: 1. P0036 - heated oxygen sensor heater control circuit bank 1 sensor 2 2. P0037 - same as above but says circuit low 3. P0056 - same as above except bank 2 4. P0057 - same as above but says circuit and bank 2 5. P0138 - oxygen sensor circuit high voltage bank 1 sensor 2 6. P013A oxygen sensor slow response Rich to Lean (bank 1 sensor 2) 7. P013C -(Same as above but bank 2 sensor 2) 8. P0141 oxygen sensor heater circuit (Bank 1 sensor 2) 9. P014A sensor delayed response Rich to Lean, Bank 2 sensor 2 10. P0158 oxygen sensor circuit high voltage bank 2 sensor 2. 11. P0161 Oxygen heater sensor circuit bank 2 sensor 2 12. P0300 random- multiple misfire detected 13. P0430 Catalyst western efficiency below threshold bank 2 14.p0443 Evaporative emissions system purge control valve circuit 15. P0446 Evaporative emissions system vent control circuit 16. P0458 Evaporative emissions system purge control valve circuit 17.p06DA Engine oil pressure control circuit / open 18. P3401 cylinder 1 deactivation / intake valve control circuit / open 19. P3403 cylinder 1 deactivation / intake valve control circuit low 20, 21,22,23,24 and 25 are the same as the last two but for cylinders 4,6 and 7. 26. P0036 Heated oxygen sensor control circuit bank 1 sensor 2 27. P0037 Heated oxygen sensor control circuit low bank 1 sensor 2 28. P0056 heated oxygen sensor Control circuit bank 2 sensor 2 29. P0057 heated oxygen sensor Control circuit low bank 2 sensor 2 30. P0138 oxygen survivor sensor high voltage bank 1 sensor 2 31. p013A again and a couple of the other codes again.... I’m assuming/hoping these are all related to a similar problem. Fuel pump? I figured the evap and cat codes are a separate issue but not ruling that out. Any help with this would be GREATLY appreciated. Thanks.
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2017 Sierra 5.3 4x4 crew cab short bed. So I had a Rhino liner sprayed in my truck yesterday, and when I picked up the truck the CEL was on for the first time since I’ve owned it. It was pouring rain and I was in a hurry to get back to work, so I figured I’d deal with it later, and maybe they unplugged something or let the battery drain. Light stayed on back to work and again on the way home. Checked the codes and it had a p0449 and another one for throttle position, but drove fine. Reset the codes and drove to work today with no CEL. Remote start wouldn’t work when I left work, and sure enough it was back, but just the p0449 this time. I checked all of the hoses, wiring, and what I could see of the tank and etc but I see no problems. The solenoid is under the cab and not near the bed, so any ideas if they could have jacked something up when prepping or spraying? Truck is under warranty but I don’t want to pay $100 for GM to say that Rhino folks messed something up and it’s not covered under warranty, but don’t want to harass the bedliner guys if it truly was a coincidence and not related to anything they did. Thoughts?
