Mmendez2404
TYF Newbie
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- Mar 8, 2025
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After putting cataclean in the gas tank, I ran it for 15 minutes. Tahoe lost power and I had to get it towed. OBD gave P1400 and P0300. Dealer could not find anything and they could not get it running. Mechanic said it had to do with the Emissions system. They did a tune up to see if spark plugs were worn out and also changed wires. The Tahoe starts up but them shuts down. It starts up but not quick or smooth. They also changed gas pump, MAP sensor, the down stream O2 sensors. One of the down stream sensors was broken. OBD says p1400 is the EGR valve sensor, but dealer has no record the Tahoe has a EGR valve.
Has anyone had this experience? What can it possibly be. Tahoe stays on for 30 seconds before shutting down.
Has anyone had this experience? What can it possibly be. Tahoe stays on for 30 seconds before shutting down.
