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This forum has special announcements and other important information posted from the staff at ZR2USA.

All users should read any new postings in this section, and should be familiar with all of the existing posts.

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so you're seeing ads no... - last post by babydeuce

Questions & Comments about ZR2USA.com

Have a comment about this website that you'd like to share with the brass/class? Tactful suggestions are welcomed, and all questions regarding this website are answered in here. Be sure you've read the "About" and "FAQ" page before asking any questions.

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Colorado ZR2! Need help!!!! - last post by 6speedblazer

Introduce yourselves!

Are you a new ZR2USA.com member? Maybe you've been a lurker for a while and finally realized that it's a lot funner to be in the inside instead of just lookin' in?? Stop in here and introduce yourself- don't be shy! Feel free to post a pic of yourself, if you'd like (clothed, preferably). :D

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Where are our members located? - last post by zr2k2

Become a Subscribed Member

Register to become a subscribed member! Help support the board that helps you!

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please consider helping to... - last post by cknaffle

Sponsored Members

Have NEVER owned a ZR2 before? THIS is the only way to get in.

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John - xgiovannix12 as a sp... - last post by jwwaldschmidt

Z of the Week

All of the information and discussion about the Z of the Week drawing.

  • 233 topics
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Zotw Is On A Hiatus - last post by Mr. Z


It's only once per MONTH now, but it's sure to be a whole lotta' FUN!! Stop in and take a look!

  • 93 topics
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August Winner - last post by osgooder

Toggle Technical stuff Technical stuff

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Anything to do with the electrical system, including lighting and not including audio.

  • 2,333 topics
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Gauges broken and warning/s... - last post by 67Truckin


Post questions, comments and answers to any ZR2 engine related matter. It's a 262cubic in 4.3 liter V6. It's rated at 190hp or so. Don't forget that your local "Autozone" will read your SES code for FREE. Find out here what they mean and what you need to do about it...

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ignition timing advance dur... - last post by Burned


Here we discusss the transmission; transfer case; driveshafts; rear end (on the trucks, that is); etc.

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NP231C-HD Swap - last post by jderekt


Shocks; torsion bars; ball joints; leaf springs; CV joints; idler arms; etc. It's all inside.

  • 2,385 topics
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Upper and Lower CA Replace... - last post by Tom


Talk about the ZR2 exhaust system including the catalytic converter, muffler, etc. See what the popular aftermarket products for our trucks are.

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Magnaflow direct fit and Gi... - last post by lostinohio

Fuel system

This forum is a GAS. How's your milage? Change your fuel filter lately? Oh- that noise you hear when your truck is running is normal: it's just the submersible fuel pump. When you don't hear it is when you need to worry...

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Why is my fuel tank shrinking? - last post by dc4bs


The round metal things that your tires are attached to. Stock ZR2 wheels are called "PA3's" or "N90's" and the size is 15 x 7 with 6in. of back space on a 5x4.75 bolt pattern. Not sure what "back spacing" is?? Well you better find out before you get aftermarket wheels!!

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What does it take to fit 33... - last post by TBrovont


Those 4 round, rubber thingies that make your Z roll. There should also be a 5th one somewhere in your ZR2 with adequate air pressure. Stock size is 31/10.5/15.

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New tires! GT Radial Advent... - last post by SnowMan


Paint; hoods; beds; flares; glass; fenders; etc.

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Rusted Bed - last post by st_mu69


Seats; carpet; dash; gauges; etc. Everything inside your ZR2 except you and your tunes.

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manual transmission w np231... - last post by Olie8


Stereo systems. CB's. Alarms.
PUMP up the volume. BREAKER one-nine. STEP AWAY FROM THE VEHICLE NOW!! You get the idea...

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Antenna snapped off in car... - last post by Wags


Give us a BRAKE! 94-97 had rear drums and 98+ had 4 wheel disk with dual piston front calipers.

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Brakes issues - last post by Triggerman

Repair Shops, Tools, and Equipment

This is for posting about repair shops (including dealerships): to recommend one, or maybe to NOT recommend one. Tell us your repair shop experience here. Same goes for tools, hand, or power. Talk about different brands, specific applications and specialty tools and your recommendations.

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Reliable Auto - last post by ZR2tooo


Talk about the TOW rating of your ZR2, as well as tow vehicles, trailers, etc.

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Blazer Hitch Compatability - last post by Madson26

Ask Mr. Mike: GM Engineer

You may already know Mike. He built the baddest ZR2 that has ever roamed this earth. He drove his ZR2 in Petersen's 4-wheel/Off-Road "Ultimate Adventure" in 2003 and impressed a lot of people with an IFS S10. A "wealth of knowledge", but also an extremely busy man these days. Ask him any specific ZR2 question you may have that you don't feel could be answered elsewhere in the forum. Please be precise. Please be patient. His professional and experienced answers are well worth it. Be sure to visit his website before you leave!

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Factory GM CV's vs. Aft... - last post by swillbee

Toggle Aftermarket products Aftermarket products

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Here's a biggy. Find out about nerf bars; lockers; sliders; rollpans; bug shields; brushguards; bumpers; safari racks; hitches; tow shackles; tonneau covers; caps; bedliners; lighting; and much more.

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lets see your lights! - last post by Thunderbear

Lift kits

The 2in and 3in "Performance Accessories" body lift. The 2in and 6in "Superlift" suspension lift. The 5in. "BDS" suspension lift. Read all about 'em. Post your lifted ZR2 pics here so we can all drool!!

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Rear Leaf Springs..... Help - last post by 67Truckin

Toggle The CUSTOM and COVETED Modifications! The CUSTOM and COVETED Modifications!

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Unique Mods

Show us that crazy paint job or custom decal you put on. Show and tell us all about those skidplates you and your buddy fabricated last weekend. Custom-mounted a "Hi-Lift" jack somewhere?? Bobbed your bed?? Sawzalled your BlaZeR2 into a "ZR2 Shark Edition"?? Let's see it!! *(please do not bother starting a thread unless you have-will have soon- pics to share with the class!)

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custom parts (not sure wher... - last post by crankshaft

The Almighty V8 swap

  1. LS engine swaps,
  2. all other V8 swaps and modifications

Forum for discussion of V8 swaps. Please post all new threads in one of the two sub-forums (LS or non-LS engines). Don't be shy about details and pictures - tell us what you know!

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2003 zr2 5.3L swap - last post by 6speedblazer

SFA Section

  1. Important Swap Info and Tech,
  2. ZR2 Build Threads,
  3. Other SFA Builds

Solid Front Axle swap. Did you do one?? Want to?? Coil or leaf springs?? What are the best axle choices for our ZR2's?? Find out here!!

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Project: Honkey on the Rock... - last post by 1TFROT

GM & LS Based Buggy Builds

This is the place the folks who have gone from a Stock Z to not much of a Z left, to full blown Chevy and/or LS based Buggy. Limited to full tube chassis builds.

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Superkevin711's Money Pit - last post by superkevin711

Fullsize Truck Builds

Tow pigs, daily drivers, trail rigs - whatever you do with your fullsize, it's welcome here. Gas or diesel engines. No brand restrictions.

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2010 f1fiddy - last post by MHPrior80

Toggle The Classifieds The Classifieds

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For Sale

  1. ZR2's,
  2. Engine/Drivetrain/ECM,
  3. Suspension/Steering/Brakes,
  4. Exterior,
  5. Interior,
  6. Wheels/Tires,
  7. Audio/Electronics/Lighting,
  8. SFA swap/V8 swap/Misc ZR2 Parts,
  9. Garage Sales/Parting Out,
  10. Ebay/Craigslist/Dealer,
  11. Anything & Everything Else

Do you have an item or vehicle to sell? Put your ad in here! Please be sure to read the rules before posting an ad.

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Holley carb - last post by eshaw

Wanted To Buy

  1. ZR2 Stuff,
  2. Anything & Everything Else

Are you looking for something in particular? Post your ad in here and see if someone has what you want!

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WTB  98+ Power Door Panels - last post by PhillyZR2

ZR2USA Approved Vendors

  1. Oliver's Custom Drive Shaft,
  2. Synergy Offroad,
  3. High Velocity Graphics (this forum is inactive),
  4. Diversified Creations (this forum is inactive),
  5. 4WD Factory (this forum is inactive),
  6. CK Welding LLC (this forum is inactive),
  7. Metalshop Motorsports (this forum is inactive),
  8. Devries Signs (this forum is inactive)

Specifically for approved members who sell products made for our ZR2's and other GM's and often offer discounts and special pricing just for us! Check in here to see what these guys have to offer.

If you are a vendor and would like your own spot on this forum, Please contact us for more information: ZR2USA.com@gmail.com

  • 176 topics
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Corbeau Seat Packages for Z... - last post by cknaffle

Toggle General ZR2 section General ZR2 section

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It's a ZR2. It's a pretty damn capable 4-wheeler right out of the box. Post your recent wheeling adventure reports/pics here or organize a ZR2 off-roading trip!! got mud? got rocks? got sand? Then get posting!!

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The best off roading shot y... - last post by PhillyZR2

Misc ZR2 section

Can't find an existing ZR2 forum that you think your thread should go in? Post it in here then. This is the "anything and everything else ZR2 related" section

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HOW TO: repairing the notor... - last post by crankshaft


So you saw a ZR2 somewhere?? Post a thread about it, and maybe the owner will see it here and chime in! Use specific wording in your TITLE, such as: "SWEET lifted white BlaZeR2 this morning (6/04) on I-95 north in Alexandria, VA!"

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Trying to figure this one out - last post by PhillyZR2

Toggle Meets/Trips/Shindigs Meets/Trips/Shindigs

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"Well I was movin' down the <dirt> road in my V-6 Z, I had some mud down my crack, I had some Pepsi's in the back...

Yeah we bad...we're NATIONWIDE."

Ok, that was a *FUNNY* version of a famous ZZ-Top song. So laugh, damn it.

Hey- ya never know! It could happen. A NATIONWIDE ZR2USA.com meet, that is.

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SLSD-2015-2 August 21-23 - last post by MHPrior80


WA, OR, ID, MT, WY and of course- Alaska!

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Fairfield,ca - last post by bb44



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Wanted, Looking to buy - last post by Gotzr2?

North East


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woo? - last post by BlkZr2


CA, NV, UT, AZ, CO, NM and even Hawaii (Aloha!)

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KOH / Glamis 2015 trip - last post by N2O_ZR2



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Grand Re-Opening of Over th... - last post by 1TFROT


I don't know how to divide it, so ALL of it- eh'?! :-p

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In Toronto for Victoria day... - last post by Chris_mtl

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