No check engine light

Tomcat00083 · Jan 23, 2019

So normally people are happy not having a check engine light. However, since I got the truck and did the egr delete I noticed that my truck never throws the light on. It does come on when you first turn the key on for like I think normally should for 5 or so sec and then cuts off. From my edge insight I'm getting the following codes: p0489, p02141, p02144. These are all EGR related from the delete and emissions related. I also have the unfortunate news of my transmission is going out so I have also had a p0700 & p0743. I thought I might have inherited a tuned truck that may have modified the check engine functionality but someone on here was nice enough to send me their stock 2500 lb7 tune and when I did a comparison of the two none of it was different. I have gone as far as removing the MAF, barometer, and the Y-bridge MAP sensor all three and still no light but shows up in the edge insight. I'm kind of at a loss on what it might be so the reason for my question. What am I missing on what its not throwing the light?

I will say that my dash is having the deal where it doesn't like to come on right away but it does after you put it in drive or backup just a little bit it will come on. Figured I'd throw that out there just in case that may be the case?

Any help would be appreciated.

MeBucko · Jan 24, 2019

It may be the dash cluster. However, I cannot be 100% sure, so don't run out and buy a refurbished cluster for just the idea that it may fix the CEL light. There is a module built into the circuit board of the cluster, and it might be that this module is what operates the clusters icon. A call to one of the sites that deals in remanufactured/rebuilt clusters would be who I'd call to verify this. There are several on Ebay, or a Google search on "200x Chevy Silverado cluster repair" will net you some contacts to get in touch with.

After taking my cluster out on at least 3 different occasions to do the solder trick (use a soldering iron to heat up the solder around the pins that plug the cluster into its wiring harness), I finally contacted a company that sells refurbished clusters. You buy one from them; they charge a $50.00 core that you get back when you send them your old one (they even provide the pre-paid shipping label). They flash your mileage into the new replacement.

So for me, getting a new cluster with nice fresh, working LED dash lights and all working gauges and DIC (driver information center), it was worth it.

Tomcat00083 · Jan 24, 2019

@MeBucko thanks for that information. Didn't even think to give them a call. I'll try to search for one of them aamd call them on my lunch break. Who did you call?

No check engine light

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