Check engine light problems
Check engine light: It indicates that there is a failure in the way the engine works, specifically in the exhaust system. When it blinks, the failure is serious.
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What does the check engine light of your Silverado 2500 mean?
Related problems:
See owner's manual
Top problems
Seevice engine light on
2001 Chevrolet Silverado 2500 Pickup 221675 miles
PO155 code cant find fuse yet. Heater circuit oxygen sensor. Service engine soon light is on fir weeks.
1 reply
1
DL
To the best of my knowledge the p0155 cos is a generic code used across several makes and models I'll try to dig up some more info to help u more
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CommentEngine light stays on. Not blinking. Reading sensor 2 sensor heater ba
2000 Chevrolet Silverado 2500 6.0 227803 miles
02 sensor circuit no activity detected bank 2 sensor. Cylinder 7 misfire detected.
2 replies
cylinder 7 , coil or spark plug, and i’m not sure of postion of that 02 maybe upstream?
CommentTCM is code throwing 
Solved
2013 Chevrolet Silverado 2500 6.6l diesel 253000 miles
Check engine light came on TCM went into slow mode or snail mode. Fuse under hood look good #14 and #19. Any suggestions. Please
10 reports
Best answer (according to Papa Squirrel)
CommentElectrical problem! 06 LBZ
2006 Chevrolet Silverado 2500 284000 miles
Driving down the road and the instrument cluster started flashing check engine, ABS, and the truck would shift! The tach went crazy! I was a couple blocks from home! Parked it and checked it next day and batteries dead! Charged them up! Started up no problems! Went into the house for a couple min. And when I came out the lights were dimming up and down ( all lights)! Jumped in and the dash was going crazy! Where do I start ?
1 report
Durolast83 from United States 7 months ago
Do a load test on your batteries is also. And it might be your ignition switch for your lock cylinder that's what was the issue with mine had the same issues
CommentOBD code P2A00
2020 Chevrolet Silverado 2500 6.6L Diesel 140000 miles
I've been having a long standing issue with this stupid code. Started over a year ago, I would get a check engine light with code P2A00, but only when my truck tried to go into regen. After about 100 miles the code and check engine light would clear so I figured it was a sensor not reading right, but didnt really matter. This was on going every time my truck would try to do a regen. Fast forward to a couple of months ago, I'm towing my camper and I hear a loud pop and my truck stalls and shuts down. I could start my truck but it would run for about 10 seconds and shut off. Under the hood I fou… Read complete
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