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I'll give the injectors another try. It hasn't been as cold for the past week or so and the problem hasn't been happening. Not sure if I'm chasing gremlins or not yet. I just did a lot of reading about the symptoms I'm experiencing -- rough running upon first start when it's below freezing...

Hi folks, I have a 2004 Tahoe, 5.3 flex fuel engine. I need to replace my intake manifold gasket. Keeps running lean, throwing CEL, etc. The challenge is unhooking the injectors. They have this "Connector Position Assurance" locking mechanism that I've read about, but I haven't been able...

Never mind, folks. I think I was imagining the behavior. I messed with it in the driveway yesterday and proved it is not doing this.

Hello, I'm the new owner of a 2004 Tahoe LS. My Tahoe is defaulting to "Auto 4WD" every time I start it up. Everything I've read, including the owner's manual, seems to indicate that it should be starting up in 2WD mode. It works fine to manually select it, but as soon as I shut down and...