Skydiving, H3 Hummer, & WordPress


  • This video provides an update on the ongoing development of the 2nd-generation H3 Hummer Rock Slider and its subsequent truck variant, the H3T. Recent testing of the rocker panel protection has confirmed the perfect fit and production-readiness of all brackets and ribs. While the full-length step plate prototype requires minor adjustments to meet production standards,…

    Continue Reading


  • This video provides a development update on our second-generation H3 Hummer rock sliders as of July 24, 2024. The prototype showcased is a partial section used for initial measurements and adjustments. The production model will extend the full length of the vehicle’s rocker panels. Our design surpasses traditional rock sliders, offering comprehensive rocker panel protection.…

    Continue Reading


  • We’re thrilled to announce that our second-generation H3 Hummer Rock Sliders are nearing production. Building upon the success of our original design, we’ve focused on addressing key issues and introducing significant improvements. Key enhancements include: We’re confident that these advancements will exceed your expectations and provide you with a superior product. Stay tuned for updates…

    Continue Reading


  • Earlier this year, I began experiencing intermittent keyless entry issues and a persistent TPMS warning light, despite recent tire sensor replacements. Initially, I assumed the two problems were unrelated and replaced the keyless remote battery, but this did not resolve the issue. I mistakenly assumed remote issues were the cause of my problem and replaced…

    Continue Reading

  • August Update


    Attention H3 Hummer Off-Road enthusiasts! Here’s an update on parts and our new fabrication partner. Watch the full video on YouTube (link below) for details. Briefly, while our initial shop offered laser cutting, bending, and powder coating, they couldn’t meet our high standards for permanent laser etching of logos, torque specs, and instructions. We’ve secured…

    Continue Reading


  • I view challenges as opportunities for growth. While parting ways with my previous employer, a long-time supplier of H3 Hummer parts, was a significant change, it also presents a chance to pursue long-held goals. I’ve been dissatisfied with the quality of welds, limited order quantities, slow design revision cycles, and lengthy shipping times. This new…

    Continue Reading

  • Broken Header Bolts


    Years ago I permanently fixed an exhaust leak on my GM equipped LH8 5.3 V8 Alpha H3 Hummer and I think everyone with an LS engine should know about the ARP Chromoly Header Bolt Kit. However, those ARP bolts alone won’t completely fix the annoying sound of an exhaust leak. If the problem is anything…

    Continue Reading

  • Brief Website Outage


    We’d like to assure our customers that Schwarttzy.com is up and running smoothly. We experienced a brief website outage on Saturday, which was identified on Sunday thanks to a customer notification. The issue stemmed from the WordPress installation having difficulty locating the locally hosted database on the server. Standard troubleshooting steps, such as restarting the…

    Continue Reading


  • Custom H3 Hummer prototypes take a lot of time to design develop. Which is why it always so exciting to announce and share when progress has been made. Today, the last major obstacle in the design phase of the Hi-Lift, CB Antenna, and Bottle Opener mount has been cleared. The parts bolt up, although a…

    Continue Reading


  • An important Off-Road accessory for all solid axle-equipped off-road vehicles is the heavy-duty differential cover. The HD Diff Cover protects the Ring & Pinion from damage where one of the tightest tolerance torque maneuvers happens. The Ring & Pinion is where the engine’s torque gets turn 90-degree to drive the axle shafts. With the precision…

    Continue Reading

  • TFLnow Championship H3


    Just a few days ago Adam, a customer of Schwarttzy.com, reviewed his awesome V8 powered Championship Edition H3 Hummer with Andre on the YouTube channel TFLnow. Being a fan of nearly all things automotive, I watch TFL’s YouTube Channels quite regularly for their reviews, adventures, and opinions on all types of vehicles. This video was…

    Continue Reading


  • Purchase the Rockford Fosgate Punch speakers P1675-S and P1675 for the H3 & H3T Hummer to get the best combination of an inexpensive price and improved sound quality. For the H3 Hummers with the Monsoon Sound System, purchase the Rockford Fosgate P3SD2-8 to replace the factory dual coil 8-inch subwoofer. Also, 2 packs of the…

    Continue Reading