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Chevrolet Avalanche Accessories & Modifications



  • i am looking to buy an 07 avalanche, is there an advantage or big difference in the 5.3flex fuel with 3.73 rear end and the 6.0 with the 4.10 rear end? difference in mpg and will flex fuel be big help in future.
  • From what I have researched, you are stuck the V8 to V4 modulation based input to the CEU. I have an '07 LTZ also. The best advice for keeping it in V4 is to "lift" your foot a bit. Quite frankly, I think the MPG I get is remarkable considering the size, weight, and wind resistence one has with an AVI. I get 16.5-17.2 MPG City and 18.8-20.4 Hwy. That is a CONSIDERABLE improvement over my old '02 Z71 AVI.

    I see comments about using cruise control for better economy....nonsense. It's not going to happen. A CC senses changes to grades that are probably not sensed by the average driver. On any grade at all, the CC will punch the trottle down which you might not be prone to do with your foot and you'll see the Instant Economy drop like a rock.
  • 07av07av Posts: 5
    thanks, I have found that I can get better economy without the cc on also! I was hopeing that someone made (or) knew how to override the CEU, to up the transition from V8 to V4? I know they have plug ins to change shift points and other things to the computer and wondered if it could change the V8/V4 mode also, BUT, I guess not? maybe someone will later
  • Good point. I'm not familiar with how to re-program shift points, etc. however I understand much of that can be done with the CEU. I've complained about "early" shifting (particularly into OD while entering a freeway ramp) to my dealer. He said, I should not be having this problem as the car is suppose to "learn" and shift the way you drive it. If this is the case, that system is not working as I inevitably have to punch it down after shifting into OD at each freeway entry ramp. I take the same route every morning to work and have for the last 17 months in my '07 AV and it hasn't learned it yet.

    BTW....I did an unscientific experiment last night. I drove a 74 mile round trip on the expressway here in DFW while there was virtually no traffic to influence my method of driving. I average 65 MPH on both legs. The first half (37 miles) I used the CC after reseting my Avg MPG. I got 18.1 MPG for that leg. The next leg, I reset the Avg MPG again and used the accelerator (that is, without the CC) on the same exact but return route. I averaged 19.9 MPG. These MPG results include the many incline/declines of expressway overpasses where the CC compensated for slopes. Using my foot on the second leg, I lifted slightly to keep the V4 mode operating longer.

    Now, while not scientific by any means, it does reasonably prove that a CC is NOT the best method of getting the highest MPG.....almost 2 MPG difference in 37 miles.
  • 07av07av Posts: 5
    Just found someone selling the Upper Body Bed Cladding Smooth Kit
    on ebay for $550.00, plus $40.00 shipping (ebay Item number: 150196148014). still looking, BUT, this looks like a good deal
  • Hello c_murrell I saw this post also, have you acted upon this? I am looking at upgrading the cladding on my 07.
  • 07av07av Posts: 5
    Just wondering if a 08' Cadillac Escalade L.E.D. Tailight will fit a '07' Avalanche? Look like it will - but don't know if it will plug and play?? looking to update, tried LED taillights w/ a resister and still get the quick flashing
  • Is there a difference between fiberglass handles & wood handles on body hammers? ">link titleI was looking at these two sets and was trying to decide which one to get.
  • ejkkjejkkj Posts: 1
    I have an 2003 Avalanche, this past weekend the front passenger door, lost all power. Nothing in the door works, the mirror, window, lock, and light. At the same time the remote will not lock or open the door locks when using either remote. I checked fuses, and what wiring I could get to in the dash, found no problems. Does anyone have any ideas? Thank you.
  • jacesanajacesana Posts: 1
    I bought a bug shield for my 2003 without thecladding. I took it off after a month on the truck. It disturbed the air flow over the roof so the wind HOWLED over the OnStar and XM antenna. I'm trying to sell it for cheap money locally now. If you have an Autozone near you that's where I bought it originally.
  • When I lock the doors by either the remote or using the door switch, the front doors lock but the rears do not. Anybody experience this problem?
  • Can the cargo liner be removed easily? I need to haul box springs and they will lay flat in the bed of the truck if I can remove the plastic on the sides of the bed.
  • erickplerickpl Posts: 2,735
    Removed: Yes.
    Easily: No.

    Those side pieces have a lot of honeycomb material behind them for structural reinforcement and are anchored pretty well in there. It can be done, but will take some time.

    Can you not secure the box springs on their sides and secure em that way or just have em in there at an angle?

  • liameenliameen Posts: 16
    Does anyone know if it is important to keep the air dam beneath the front bumper on a 2008 Avalanche? I got tired of hitting kerbs, snow banks,etc., so I took it off. It says in the manual that it should only be taken off for off road situations and put back on asap. I looked underneath and it seems that the air flow is still sheilded away from the engine by a metal cowl. Any advice anyone?
  • 07av07av Posts: 5
    YES!! is needed! The air dam acts like a flap on a airplane wing, it creates a LOW presure area behind it causing MORE air to go threw the radiator to fill the space behind it and less under the truck! ....If its removed, more air will flow under the truck and building presure in the area behind the radiator and less air flow thru it!
  • liameenliameen Posts: 16
    Thanks for the tip about the air dam. I put it back on today. It is a bit of a pain though, being so low. In my last truck, I had gotten used to rolling the wheels right up to he kerb stone, but that's a no-no with the Avalanche. However, I drove around for about two weeks without the air dam on and I did not see any noticeable difference in the running temperature of the engine. The temps in our area (NY) were very low though, and maybe things could be different in hot weather.
  • rshtrsht Posts: 277
    Does anyone know if there is any Air Adjustable shocks (e.g. Monroe Max-Air) that can fit on a 2004 Avalanche 4X4 with 5.3L V8 (its without the factory electronic air ride system) for the rear axle? I want to be able to some what maintain the rear ride height when carrying a load, with the OEM shocks the rear end sags... Help!
  • erickplerickpl Posts: 2,735
    You wanting to bag the back?

    Hellwig products make some stuff that may work. I run their sway bars on my Avalanche and it handles MUCH better.

    They do some air suspension stuff.

  • rshtrsht Posts: 277
    Thanks so much for the quick reply. My intend is to keep the rear of my Avalanche from sagging when carrying cargo (i.e. helping friends move, washers, dryers and etc...). I will checkout the Hellwig site, Thanks much!!!
  • erickplerickpl Posts: 2,735
    I got their new sway bar design. My wife constantly complained of how tippy the Avy was. After putting the new sway bars on, it corners a LOT flatter and is very stable in crosswinds now.

    Corners that I could only take at 20 mph I can now take at close to double that w/o feeling like the truck is out of control. Their suspension stuff is THAT good. I had a BMW 6 series and a 3 series that handled great, along with my wife's Audi. My truck isn't THAT good, but it gets a lot closer. With the right shocks, I'll have my ultimate ride.

    Their adjustable suspension systems in the back sound EXACTLY like what you need. Let me know how it all goes!

  • rshtrsht Posts: 277
    Paul, Thank you for the information.
    A couple of days before I read your second reply, I found the following website for Arnott Inc. and thought I pass that along.
  • erickplerickpl Posts: 2,735
    Always nice to have options. Hellwig has done some pretty cool stuff and I'm very happy with what I've put on my Avalanche. Others who have done the variable setup from them have raved about them as well. I have heard the name Arnott, but not much about what they offer.

  • This weekend, I became the proud owner of a 2005 Avalanche. The truck came with 20-in wheels. Although they look great, the ride feels a little harsh and I am seeing tread wear on the insides of all the current tires (Pirelli Ventus ST 275/55/R20). So I have the following questions:
    1. Do the 20s always cause excessive tire wear?
    2. Will a different type of tire with the same size improve ride cushioning?
    3. If the answer to #2 is no, can I go to a 275/60/R20 with no further modifications (31.9" diameter vs. 33")?

    Thanks to everyone for your help.
  • erickplerickpl Posts: 2,735
    I'd suggest an alignment. Tire size MAY impact wear a bit, but more likely the front end has had the torsion bars cranked to lift the front end a bit, which may cause the alignment to be off.

    My Avalanche has 20's as well, and my wear problems were from me not getting an alignment after cranking the keys.

  • ralf51ralf51 Posts: 1
    I just bought my first Avalanche a couple days ago and I'm looking to get a few accessories for it. To start I am looking for some good all weather floor mats. I didn't know if the best ones out there were the ones on the chevy site or if there is another place to purchase them from cheaper. The next item i'm looking to buy is a cargo net or something for the bed of the truck so that everything doesnt slide to the front. I saw the cargo net on the chevy website and didnt know if that was the best place to get it from or if there were other options. Is there a better site to buy items for my Avalanche that are cheaper and have a better selection? Any help that you can give would be greatly appreciated.
  • erickplerickpl Posts: 2,735
    Honestly, I like my Chevy mats in my Avalanche that I got from the dealer.

    As for the cargo net, I haven't installed one in mine but you can do a search for avalanche accessories and find LOTS out there. There is a sliding bed you can install so if stuff DOES slide forward, just slide the bed out and you have it. But it does cost you some vertical clearance.

    Welcome to the world of aftermarket stuff! :)

This discussion has been closed.