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    Purchasing a diagnostic manual

    Hello, Does anyone know where a digital version of the factory diagnostic manual can be purchased? I have a subscription to alldatadiy.com but it has very little diagnostic information. I would purchase a hard copy if the price was decent. Thank you for any help.
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    engine overhaul - labor hours

    Thank you for your help, guys.
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    engine overhaul - labor hours

    I searched the forum but did not find the answer to this. Would someone like to help me by looking up the number of labor hours required to overhaul the engine on a 2008 GMC Yukon XL Denali AWD? This has the 6.2L engine. Thank you for any help.
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    Unsure if I want Tahoe with AFM

    I thought over the AFM question before we bought a vehicle without it. Best I could tell, AFM helped GM meet EPA combined emissions requirements but the benefits for the most part end there. On paper, the bean counters must have been satisfied that it would get out of extended warranty for...
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    Unsure if I want Tahoe with AFM

    We have a 2008 Denali without AFM. I rebuilt the engine...it did not have AFM components.
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    Steering rack: looseness between rack / pinion gears

    I'm posting this because I didn't find anyone else discussing it, and it may help someone else. My theory is the steering racks on these trucks develop play between the rack and pinion gears somewheres after ~ 160K miles. The truck is a 2008 GMC Yukon XL Denali. The OE steering rack (190K...
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    Squeal from Engine/Trans?

    How about removing the belts and running it for a short while to make sure the noise is not from a belt or accessory? Not fun, but you could unbolt the torque converter and run the engine to eliminate the transmission as a variable.
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    Air Lift 1000 Helper Springs with OE compressor, etc.

    Thank you for your help. Even if the results don't end up being as you had hoped, I encourage you to finish this project. I have learned a lot from taking on projects such as this one that you now have in your hands. I haven't always created a useful product at the end but the learning...
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    Air Lift 1000 Helper Springs with OE compressor, etc.

    My mistake. Arnott’s warranty is lifetime limited. The warranty on shocks is not mentioned in their warranty PDF. I asked at Arnott, they verified the lifetime limited warranty.
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    Air Lift 1000 Helper Springs with OE compressor, etc.

    Guys, thank you for helping me. To summarize, I learned that the Air Lift 1000 Helper Springs (air bags) aren’t designed to work at the higher pressure that the OE air shocks are able to withstand. I had a thought about trying to find a lower pressure cut off sensor to accommodate the Air Lift...
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    Air Lift 1000 Helper Springs with OE compressor, etc.

    Hello, We have a 2008 Denali with the air assist shocks in the rear. The air bladders on the rear shocks are worn out and leaking. I have a few questions that maybe someone could help with. What is the typical life span of the OE air assist shocks? Mine are AC Delco PN 5801095. I was thinking...

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