Answers
Mar 24, 2024 - 04:27 PM
Hello there I am a shop owner, when you run into problems like these truck problem will only go away with reprogramming of computer
or can be reset with scanner. If you need help getting this done contact
Autogods
info@myautogods.net
Source: Imyautogods.net
Mar 25, 2024 - 10:50 PM
Hey there, Tom!
Sounds like you've been through quite the troubleshooting journey with your Gen 3 LS engine in your 2010 Avalanche. Dealing with a persistent check engine light can be a real head-scratcher, especially when you've already replaced the knock sensors and done some other maintenance work.
Alright, let's troubleshoot this pesky check engine light. You've done a bunch of good things already, so that narrows it down a bit. Here's what I'd recommend next: 1.) Double-check those new knock sensors: Even new parts can be faulty sometimes. Make sure they're the correct part number for your engine and that the connections are tight and clean.
2.) Scan for hidden codes: Some scanners won't pick up all trouble codes. See if a more advanced scan tool reveals any hidden gremlins.
3.) Wiring woes: There could be a wiring issue between the knock sensors and the Engine Control Module (ECM). A damaged wire or bad connection could be confusing the computer.
4.) Vacuum leaks: Unmetered air entering the engine can mess with the air/fuel ratio and trigger a knock sensor code, even if there's no real knock. Check for any loose hoses or cracked components around the intake.
Since you mentioned increased fuel consumption, that could also be related to a vacuum leak or a faulty sensor throwing off the fuel trims.
Here's the good news: Even though the light is on, the engine seems quiet and runs okay-ish for now. But that check engine light is a warning sign, so it's best to get it figured out. If you're not comfortable digging into the wiring yourself, a mechanic can diagnose the problem and get you back on the road without the light nagging you.
You may need some parts in the process, click this link to be directed to our website where your vehicle information has already been entered. Simply enter the part's name into the search field to get started.
Good luck!
Sounds like you've been through quite the troubleshooting journey with your Gen 3 LS engine in your 2010 Avalanche. Dealing with a persistent check engine light can be a real head-scratcher, especially when you've already replaced the knock sensors and done some other maintenance work.
Alright, let's troubleshoot this pesky check engine light. You've done a bunch of good things already, so that narrows it down a bit. Here's what I'd recommend next: 1.) Double-check those new knock sensors: Even new parts can be faulty sometimes. Make sure they're the correct part number for your engine and that the connections are tight and clean.
2.) Scan for hidden codes: Some scanners won't pick up all trouble codes. See if a more advanced scan tool reveals any hidden gremlins.
3.) Wiring woes: There could be a wiring issue between the knock sensors and the Engine Control Module (ECM). A damaged wire or bad connection could be confusing the computer.
4.) Vacuum leaks: Unmetered air entering the engine can mess with the air/fuel ratio and trigger a knock sensor code, even if there's no real knock. Check for any loose hoses or cracked components around the intake.
Since you mentioned increased fuel consumption, that could also be related to a vacuum leak or a faulty sensor throwing off the fuel trims.
Here's the good news: Even though the light is on, the engine seems quiet and runs okay-ish for now. But that check engine light is a warning sign, so it's best to get it figured out. If you're not comfortable digging into the wiring yourself, a mechanic can diagnose the problem and get you back on the road without the light nagging you.
You may need some parts in the process, click this link to be directed to our website where your vehicle information has already been entered. Simply enter the part's name into the search field to get started.
Good luck!
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