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Active Fuel Management
You need to be careful here. The replys that you received that say your L92 engine does not have AFM are not strictly true. If your 2007 Denali was built prior to April 1, 2006 (and a lot of them were), you engine has all the AFM hardware inside (even though AFM operation is not commanded in...- HD_LS
- Post #13
- Forum: Engine & Drivetrain
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2007 GMC Denali stalls after towing
You're welcome. Glad to help when I can.- HD_LS
- Post #74
- Forum: Engine & Drivetrain
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Aftermarket Performance Radiators????
Cold Case is the way to go. I had both, brand new in my garage. The Cold Case is what went in. In either case, it's not a drop in. The thicker core requires things like trimming back flanges on the fan shroud, adding sealing foam, etc. Just make sure you put a restriction in the small...- HD_LS
- Post #20
- Forum: Engine & Drivetrain
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2007 GMC Denali stalls after towing
While its been few months since this post, this information may help others with this problem. While sensors, transmission, etc. can cause this; perhaps the most common cause of this (hot stall at low speeds & idle, no start when hot) has been identified and solved elsewhere. Specifically as...- HD_LS
- Post #70
- Forum: Engine & Drivetrain
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07 Tahoe engine hot ac turned off
You are on to something there, with the radiators. Struggled with the hot, AC off bs for a while. I made a number of cooling system improvements at the same time, so it took a while to figure it out. But I think I have it solved on my machine. Source of the problem: Aftermarket radiator...- HD_LS
- Post #11
- Forum: Engine & Drivetrain
