Brayden1999

2004 Tahoe 50k maybe on the motor less on the trans motor was put in in 2019 and trans in 2021. Runs great but the only problem is when I am crushing on the highway and start to go up hill maybe up a bridge or something along those lines it will start to flash the check engine light around half way up the climb. If I let off the gas for a second then get back into it it’s usually fine and goes back to normal. I am not sure what could be causing this I doubt it’s spark plugs, coils, or injectors because they are all around 50k with the new motor. But please let me know what y’all think and if I can provide any more info. Thanks!

I am having a similar problem with my 2004 Chevy Tahoe. No miss at all driving except when I am at highway cruising speeds going up hill. About half way up the hill the check engine light will start to flash but if I let off the gas for a second and then get back into it it goes back to normal. Any ideas? Let me know if I can provide anymore info. Thanks!