Jump to content

Lift? Leveling? 2008 Sierra Denali


Recommended Posts

Posted

I would love to get my 2008 Sierra Denali raised up, a little bit at the least. However, I don't want to cause myself a ton of problems. i.e.: AWD, Steering issues, Vibration issues, etc. I heard there can be issues if you go too far. Anyway I feel even a slight lift would make my truck look allot better and give me some clearance. Any advice would be greatly appreciated. Maybe someone knows about which manufacturers of lift kit/leveling kits that seem to have fewer issues with GMCs?? Which manufacturing companies to avoid. I heard BDS kits are good however, that was also the guy at the off road store who was trying to sell it to me, so rather than a salesman, it would be better to get unbiased advice from of the real smart people on this forum. I'm pretty much new at all of this so any help is highly valued, THANKS in advance for sharing your knowledge and experience!!

Posted

Many of us run the Rough Country 2" leveling kit.........Very easy to install and priced right. If all you are looking for is a slight lift, that the way to go IMO.

If you are looking for a full kit, BDS is best, from my experience anyway.

Posted

If you're even thinking you want a real lift, then just do it from the jump. You can't go wrong with BDS, but with ANY amount of lift you can expect vibes on the AWD, so go with a big boy kit and get a dual cardan drive shaft to eliminate the vibes. Search flyin6 ....I think that's the guys user name. He had thread about his lifted Denali.

Posted

Many of us run the Rough Country 2" leveling kit.........Very easy to install and priced right. If all you are looking for is a slight lift, that the way to go IMO.

If you are looking for a full kit, BDS is best, from my experience anyway.

 

 

X2

Archived

This topic is now archived and is closed to further replies.

  • Latest Articles

  • Posts

    • My nephews 7.3 got noisy right around 100K miles. While replacing the engine he drove his old 6.0 Chevy that had over 200K miles on it. It an old reliable backup. I haven’t been around the old shop lately. I’m curious to find out if there using the new GM heavy duty gas.
    • I don't know if you or anyone enjoys it or not but, why not share it. It's GM "truck" related and we're in the right place to discuss that 😉 I'm also working on some creative writing skills, I'm not quitting my day job to pursue that, either!   As I said, I've hit a wall because I'm not making any progress, and the progress is the fun part for me.   The idler pulley and EGR valve came in. Against better judgement, I went out there last night and put both of them in. I was able to get a nut on the back of the bolt on the side with the broken flange. There's enough flange still there that I can get that side of the EGR to snug down. It's not perfect, it's not "right", but this is the fix I have for now. If I decide to keep the rig, I talked to a guy locally who will sell me a complete intake for $100. If it's my truck, a broken flange like that would bug me too much. Yes, I'm crazy. But I embrace it.   Pulley on, EGR installed, started the truck. Great...still have a pulley squeaking like mad. That was the first disappointment. I thought I had pinpointed the problem. Before I replaced it, I sprayed the back of that pulley with PTFE and it would shut up for about 30 seconds. Is the squeak actually the belt? I'm frustrated.   SO then I decided why not disappoint myself twice, so I took it for a spin and sure enough, the CEL set for P0401 insufficient EGR flow again.   I had some extra time, so when I arrived home, I decided to ask AI about my EGR code. We had an interesting conversation.   I asked how to tell if my MAP sensor is bad and if that could be setting an EGR code since a bad MAP may not be sensing the requisite drop in manifold pressure when the EGR activates. I gave it the MAP value at idle and it told me to blip the throttle hard and watch the MAP reading. It said no, the values appear normal and it's reactive to pressure changes, and then instructed me to test voltage at the harness. I don't think it's the MAP sensor. Interesting, though, I gave it MAP reading values in inHg, and it thought I was using PSI, so I had to correct it. AI is a very dangerous tool if you aren't treating it like the machine that it is.   Then it walked me through testing the EGR and harness. It took me down an interesting path. It was referencing a gray wire and a white wire so I told it I can't tell the difference on my harness because it's dirty and old and both could be white or gray, I'm not sure. So it gave me a more accurate description of the ABCDE pins on the connector and started referencing pins instead of colors. Helpful.   The EGR harness has 12v power, and it also has 5v reference power from the PCM. What I'm unclear on is there's a ground wire and I thought AI had said that one of my tests revealed the ground in the harness was likely bad and it instructed me to wire a test ground. I got distracted and navigated away from the AI conversation, and when I went back and asked for clarification it said I must have misunderstood. (how rude- next time I'm saving the conversation!)   But I think it was onto something. I recall NOT getting 12v when I tested the power wire to the ground wire, but I did when I tested the power wire, grounding the voltmeter to the engine block. AI said no, the ground wire is actually for the PCM, that's how it commands the EGR on by grounding it and so the circuit should be open with the key on (i.e. EGR off). But I think there's also a static/overall ground that should always be grounded, and if that's bad, then the EGR isn't activating when the PCM commands it on, and thus setting the code.   There's a bunch of other tests it suggested, back-probing with the EGR plugged in and engine running. I need to get some time to focus, and not just tinkering after a long day.  
    • the 7.3 lifter issue is real, not few and far between.  my 6.6 gas does not use oil.  the 7.3 with 4.30 gears pulled hills better and felt better off the line. the 6.6 gets the job done though. mpg sucks
    • are you talking about the loud whooshing, grinding type noise? mine does it too
    • I am a huge fan of the Slate.  (SUV for her, base pickup for me.)  Unfortunately, there are no plans to sell in Canada but maybe this will change.  I think if/when Ford offered a high range. EV Maverick, it would be my first choice.
  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...