Jump to content
  • Sign up for FREE! Become a GM-Trucks.com Member Today!

    In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and SUVs. From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM-Trucks.com as a daily part of their ownership experience. 

Colorado ZR2 Recall For Shocks Reported By Owners


Gorehamj
 Share

Recommended Posts

zr2 front suspension.jpeg

John Goreham

Contributing Writer, GM-Trucks.com

12-4-2017

 A new recall for the Chevrolet ZR2 has surfaced in owners' clubs and groups. The recall, GM 17345, is related to a failure of the front shock. Those who follow this new off-road truck may recall that GM opted to use a new-style shock developed by an F-1 racing supplier. The recall notices posted say the failure is, "...may have a leaking front shock absorber. noise as a result of contact between the upper control arm and service stop, as well as a potential fractured shock absorber piston rod." Owners are reporting that the inspection is related to manufacture date and that not all ZR2 trucks have the defect that leads to the failure. 

zr2 dampers.jpeg

If you are an owner of a ZR2 and have not received the recall notice by mail yet, you can check to see if your truck is affected at this GM recall lookup site.  

 

For more information on the special DSSV shocks on the ZR2, check out this story and video.

 

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

  • Similar Content

    • By Zane
      Zane Merva
      Executive Editor / Publisher - GM-Trucks.com
      October 10th, 2019
       
      Chevrolet is giving the not so subtle hint that the rumored Silverado ZRX model is about to become reality. Today, the brand announced that a "Silverado Race Truck" would compete in this weekend's Laughlin Desert Classic alongside the Hall Racing Colorado ZR2. Interestingly, the Silverado will compete in the Desert's 1200 Stock Class, which limits changes to suspension, under body, and race-safety equipment. What does that mean? This truck is not only ready to race, it's close to production too. 
       

       
       
      The "Silverado Race Truck" is outfitted with a number of aftermarket goodies that look like they were ripped right off a Colorado ZR2. Starting as an LT Trail Boss with the 6.2L V8, the Silverado Race Truck is outfitted with a long travel suspension, front and rear jounce shocks and Multimatic DSSV dampers. In short... the modifications that Chevy applies to the Colorado for the ZR2 model. 
       

       
      Why didn't Chevy just come out and call this the ZRX Race Truck? We're not sure, but there's no doubt this is a low flying announcement made to pave the way towards an eventual Silverado model that emulates the ZR2's success in a larger package. Whether that's enough to take on the Ford Raptor is too early to determine. Stay tuned for updates on the "Silverado Race Truck" and future Silverado ZRX. 
       

       
    • By Zane
      Zane Merva
      Executive Editor / Publisher - GM-Trucks.com
      October 8th, 2019
       
      Chevrolet is ready to race the 2021 Colorado. Like, really ready to race. This week in fact. The new face for the Colorado mid-size truck will make its public debut October 10th during the 2019 Method Race Wheels Laughlin Desert Classic and will be driven by Hall Racing. Here's a sneak peek at the all new face of the Colorado. 
       

       
      Chevrolet also gave us a showing of the production 2021 ZR2  that will debut in one month at the 2019 SEMA Show in Las Vegas. Check back with us in November for our first hand take at the new ZR2 when we visit the SEMA Show.  Anyways, let's take a look at the changes. 
       
      What's new with the 2021 Colorado?
      First off, the changes so far seem to be cosmetic and packaging only. No new features or changes in specs have been announced yet. However, the exterior has been warmed over to bring it in line with the Silverado's front end, without breaking the bank on a full redesign (which is expected in the 2023-2024 MY time frame).  Here's the announced 2021 changes. 
      New front end appearance for ZR2 model. Only Colorado model to have "Flow-through Chevrolet Fascia".  WT, LT, and Z71 trim levels will receive updated center bars, lower fascias, and new front skid plates.  WT and LT will feature "all-new" gold Chevy bowties while the Z71 trim is adorned with a black bowtie.  All models receive embossed 'Chevrolet" tailgates and ditch the traditional bowtie on the rear of the vehicle.  A new "Sand Dune Metallic" will be offered on Z71 and ZR2 models only.   
      What do you think about the new face of the Colorado?
       





       
       

    • By Gorehamj
      John Goreham
      Contributing Writer, GM-Trucks.com
      5-15-2019
      The same folks that GM turned to for the specialty equipment on the Colorado ZR2 Bison have created a fantastic tray bed concept of the truck. America Expedition Vehicles (AEV) built the concept for Overland Expo West. The concept truck shows off new high-clearance fender flares that AEV has developed. AEV took the new tray bed concept Bisons on a three-day off-road desert adventure to see how well they new bed would hold up. The post-trip report is that it worked flawlessly. The new fender flares allow for the fitment of 35" wheels without a lift kit. 
       

      The new tray bed and fender flares are presently in development. AEV hopes to have more information for those interested soon. Follow AEV via its website, or at the company's Facebook page. 
       
      Images courtesy of AEV and Scott Brady.  
       
       
    • By ThomCannell
      Thom Cannell
      Contributing Writer, GM-Trucks.com
      December 6, 2018
       
      Last month Chevrolet invited us to test the Chevrolet Bison, a ZR2 derivative with distinctive upgrades that add to its already solid off road capabilities.
       
      Built off the already-capable Z7R2, American Expedition Vehicles (AEV) provided the collaborative additions that created Bison. It retains the class-exclusive front and rear locking differentials from ZR2, and high-zoot Multimatic DSSV dampers. The design of the Dynamic Suspensions Spool Valve dampers uses hollow cylindrical sleeves instead of familiar discs. These were used first on race cars including Champ cars, LeMans prototypes and F1 They provide superb off road damping, particularly on rough trails where they offer greater passenger comfort.
       

       
      Getting to the grit of it, a pickup is hard-pressed to have the approach angle of a Jeep, and impossible for a production bed to provide a really short departure. Nonetheless, Bison does a very good job of going over rocks. One of the AEV additions is a set of five hot-stamped Boron-steel skid plates to protect the oil pan, fuel tank, transfer case and front and rear locking differentials, which we tested extensively. “As this is the first Chevrolet vehicle we’ve given the AEV treatment to,” said Dave Harriton, founder and president of AEV, “we wanted to do something special with the industry’s first use of hot-stamped Boron steel.” We think he’s referring to the off-road industry, as hot stamped High Strength Steel is the basis for modern crash-worthy chassis. However, those skid plates kept the rocks out of our oil pan.
       
      Some of the Bison upgrades are more cosmetic than necessary, like replacing the bowtie grille a free-flowing CHEVROLET front grille, Bison decals on the bedsides and an AEV Bison logo on the tailgate plus an embroidered AEV on the floor liners and front head rests. Branding, eh? Performance-oriented changes include the stamped steel front and rear bumpers. The front bumper allows adding a winch (would you go off roading without a winch??), fog lamps and integrated recovery points.
       

       
      As a truck designed to venture deep into open spaces, Chevy added 31-inch Goodyear Wrangler Duratrac tires mounted on Bison-specific 12x8-inch aluminum wheels. We tested those, too, and they have plenty of grip on rocks, and in loose dirt. Note that the ZR2 cast-iron control arms and Autotrac transfer case are retained, along with the ZR2’s 3.42:1 axle ratio and front/rear tracks wider by 3.5-inches. Compared to a ZR1, Bison is lifted by two-inches.
       
      Our test vehicle was powered by the new 2.8-liter Duramax diesel (186 hp., 369 lb.-ft.) mated to a six-speed transmission. It was the crew cab model; with the short bed which including some AEV upgrades.
       

       
      On our highway drive towards an off-road park, we noted that the Bison was extremely quiet, and not just “quiet, for a truck”. No, it was quiet for any kind of vehicle, including a Cadillac. After switching the transfer case into 4WD-high, we bucked our way towards the promised bigger challenges. Along our trail—nothing extreme but way off the beaten path—we again noted there hadn’t been a single squeak, rattle, or buzz. The only odd sounds in the cabin were from the zippers on our camera bags. Bison’s frame is stiff; there’s no tweaking, everything is absolutely tight.
       
       
      There was no way to call out the suspension and its Multimatic spool-valve-type dampers, however the suspension was supple on the rough trail. Another noise-related note, we picked up no rock noise in the wheel wells despite being pushed around by potholes, rocks and dips. We might as well have been on the freeway, from a noise perspective.
       
      Our truck had almost every American Expedition accessory available. There were LED fog or trail-search lights on the hood, a ladder rack and a storage bin system mounted below a false bed. We only lacked the Baja-style intake snorkel.
       

       
      The bolted-on roof rack may have added stiffness to the already ultra-stiff box frame, which allowed the suspension do its work. Watching the vehicles ahead of us, we could see how steady the beds were, and how much the suspension was working. For a stock vehicle, there was plenty of travel available. Bison has a solid rear axle and independent front suspension, and there is a divide among off roaders and rock climbers as to whether a solid axle or independent rear suspension is better. Rock climbers seem to prefer solid rear axles.
       
      We thought the ZR2-based Bison chassis with a Duramax diesel made off roading almost a no-challenge event. The diesel engine was totally on-point with torque, needing only a light application of brakes for stability when balancing on rocks. Comparatively, those who had the standard V-6 gasser had a harder time of it, using more throttle to obtain torque, then having to feather the throttle and brake to stay on track. If you've never done rock crawling, you must apply power to get up, apply brake to stop, before being guided down in the correct direction. Yeah, it's really hard to see the front wheels through the engine.
       
      One of the options Chevy will offer through dealers is a shorter, cut off exhaust tip. We strongly recommend this if you’re going rock crawling. Many of us “modified” the longer exhaust tips when crawling off rocks.
       

       
      After crawling a rock canyon we grouped to head for lunch. Parked on a hill with loose sand and the tranny set in 4WD high, there wasn't enough traction. Locking the rear differential made climbing the hill as simple as stepping on the throttle, in that low traction situation. Having complete control over axles and each wheel made off roading and rock crawling easy, even for beginners.
       
      Note that, in our opinion, the Duramax doesn't deliver optimum fuel economy for the Bison. It's good, but not great. Where it shines is in torque availability for off roading. We can see the Bison with Duramax as a perfect combination for off road camping, adventuring, and modest towing. It's quiet. While on our rock crawls, there was never a sound from the chassis, no wracking, graunching, squeaks or rattles other than when we skidded over rock on those Boron steel protectors. It was billet solid. In fact, we'd go so far as to say our Bison was quieter than a standard Silverado and totally ready for any off road adventure.
       

       
      Interested in the Colorado ZR2? Join the GM-Trucks.com Colorado ZR2 Facebook Group!
    • By Gorehamj
      John Goreham
      Contributing Writer, GM-Trucks.com
      11-13-2018 
       
      Chevrolet announced a new list today for Colorado ZR2 race components. The list consists of 15 off-road racing parts ranging from the ZR2's special Multimatic DSSV shocks ($4,187.50) to jounce shock systems ($1,231.35 front and $1,543.75 rear). The parts are presently all suspension-related. Chevy has not included any engine upgrade parts.
       
      These parts were developed by Chevrolet Performance in conjunction with Multimatic and Hall Racing. Chad Hall drove over 10,000 miles in two race series using beta versions of these components to wring out any bugs and to ensure a perfect final product for Colorado owners.  “Off-road racing is a brutal test of a vehicle, and especially its suspension components,” said Mark Dickens, executive director of Chevrolet Performance Variants, Parts and Accessories and Motorsports. “Over two years, Chad mercilessly pushed these ZR2 parts to the limit for the ultimate in development and validation. After seeing the success of the Colorado ZR2, customers have been hounding Chad for help building their own ‘Hall Racing ZR2,’” Dickens continued. “For the first time, you can buy the same Chevy Performance Parts that raced and won in the desert. All you need to add is the required safety equipment to build a pre-runner for scouting the Baja 1000 or a full-blown race truck capable of competing in the race itself.”

      Chevy says that these racing versions of the similar parts already on every ZR2 focus on desert running while preserving low-speed off-road performance. For example, the parts can add an additional 1-inch suspension lift and a 1.5-inch Body Lift on top of the ZR2’s factory ride height and up to 15 percent more suspension travel for extreme high-speed off-roading. AThe racing Multimatic DSSV dampers are engineered to go beyond the already formidable bandwidth of ZR2’s stock DSSVs. The available Multimatic Front Long Travel DSSV Shocks provide customers with a 15 percent increase in overall front suspension travel, while the Multimatic long travel rear shocks increase rear suspension travel by as much as 10 percent.
       
      “These parts can be purchased individually to suit each customer’s needs, or as a complete package,” said Dickens. “This gives customers the flexibility to build their truck up over time, purchase only the parts they need for their particular interest, or buy the complete set to build their own ‘Hall Racing’ ZR2.”  Jump to the new online list here.
       






  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Forum Statistics

    239.4k
    Total Topics
    1.4m
    Total Posts
  • Member Statistics

    291,198
    Total Members
    8,960
    Most Online
    fekes41398
    Newest Member
    fekes41398
    Joined


×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.