05 5.3L Tahoe Misfire/Running Rough Issue; Stumped

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Kaeden

Kaeden

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Here’s a little update for everybody. The first shop I took it too checked all the sensor wires and stuff and determined it was the PCM. So I ordered a PCM and had him put it in and had no luck. I then had it towed to the dealer. The dealer had it for about a week again checking wires and determined it was the oil pressure sensor. They unplugged it and it ran fine. So we replaced that and it solved the problem. Not sure if the PCM was ever the problem but the new one is still in and don’t care to chance it by putting the old one back in.
 

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