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  1. Kens1990K2500

    How I Added an Auxiliary Transmission Cooler

    I recently put a snow plow on my truck, and before I began plowing, I wanted to install an auxiliary transmission cooler. I read a recent thread from another forum member, who used all GM factory parts. After doing some research, I decided to use a different approach. For the cooler, I chose a...
  2. Kens1990K2500

    How I Repaired Missing Front Bump Stops

    I’m writing to share my experience on an issue with GMT400 trucks in the Rust Belt. Although it’s a common issue, there’s very little information about it. Maybe because it’s not a critical component, it’s probably something few people think about. I’m talking about … the front suspension rubber...
  3. Kens1990K2500

    Help! Can't remove steering shaft

    I am trying to replace my steering coupler, a/k/a rag joint. I have removed the upper and lower bolts, and was sliding the upper portion of the shaft, downward. It moved about an inch down (see photo), but needs to move another half inch, before it is free. Problem is, it won't move any more. I...
  4. Kens1990K2500

    How rare is this combo?

    At my jobsite, I saw a GMT400 in a cab/bed combo that I have never seen before: it was a crew cab, with a SHORT bed, and single rear wheels. It appeared to be a later (Vortec) truck. Most of the crew cab trucks I have seen have both dual rear wheels, and a long bed. It was so strange to see...
  5. Kens1990K2500

    Double clunking

    My truck has about 180,000 miles, and the drivetrain has a lot of lash or slop. I've heard of slip yoke clunk, but every time I take off from a full stop, I get not one clunk, but two clunks. It's kind of embarrassing. If I very gently ease into the throttle, I can take off quietly, but it's...
  6. Kens1990K2500

    Need advice on order of install

    I am going to be replacing both front fenders, and both front wheelwells (sometimes referred to as inner fenders), as all four parts are corroded. The replacement fenders are clean, used aftermarket ones. The wheelwells are new aftermarket parts. My question is, what is the best/easiest order...
  7. Kens1990K2500

    What is this electrical device?

    Hi, I am getting ready to replace my front driver's side inner fender/wheelwell, and I noticed some unusual wiring mounted on the wheelwell, next to the washer fluid reservoir. I'm going to have to remove it to replace the wheelwell, and since it's so corroded, I'm going to replace it, when I...
  8. Kens1990K2500

    Unusual find - super low miles

    Hey all, I saw this GMT400 for sale on my way home from work. At first, I though the sign on the windshield that read 800 miles was a typo, until I read the printed info on the driver's window, describing the truck's unusual history. The paint is a bit dull, but the truck appears very clean...
  9. Kens1990K2500

    Extreme dimming

    I haven't driven my truck much in a while, so I can't remember if it's always done this, or if this is a new problem (probably not a new problem, I'm thinking, since no recent electrical work). Anyway, I was driving after dusk and noticed that the brightness of the digital lights on my factory...
  10. Kens1990K2500

    Replacement torsion bar adjusting hardware?

    I am in the process of rebuilding my front suspension and loosened the torsion bar adjusting bolts. I did use penetrating oil (Kroil). The bolt on one side moves fairly easily, but the other side's bolt is extremely difficult to turn. I believe the bolts are original, and are somewhat...
  11. Kens1990K2500

    My first suspension rebuild, have questions

    This is my first time doing front suspension work. I have already disassembled most of my front end. Now that I have all the parts, I am about to start installing new stuff. Parts being replaced are as follows: CV axles; upper control arms; upper and lower ball joints; inner and outer tie...
  12. Kens1990K2500

    Opinions of TRW suspension parts?

    I'm in process of buying parts to rebuild my front suspension. I've bought a mix of brands, including Mevotech, Moog and ACDelco, and heard Proforged is good (although I know enough to avoid Moog for ball joints). But, I am considering TRW for new upper control arms, since I found a good deal...
  13. Kens1990K2500

    Odd camber bolt knockout experience

    In process of rebuilding my front suspension, I removed the upper control arms and was surprised to find that half of the eight holes total for the UCA bolts still had knockouts in them, but the other four holes, were already oval holes from the factory (see attached photos). In other words, I...
  14. Kens1990K2500

    Lost a bolt - having trouble finding replacement

    I am in the process of replacing my electrical ground straps. When I was removing the ground strap that goes from the firewall (just under the heater hoses) to the back of the passenger side cylinder head, I dropped the bolt holding the ground strap to the engine. Unfortunately, it did not...
  15. Kens1990K2500

    Truck stalled, wouldn't restart, then started fine hours later

    I've owned my 1990 K2500 with 5.0 TBI a little over a year now, and it always ran well, until yesterday. The engine stalled as I pulled into a parking spot at work yesterday morning. I tried to restart it. It cranked fine but would not start, or even attempt to start. I had a coworker listen...
  16. Kens1990K2500

    Any source for stainless steel body hardware?

    I'm going to be doing some body work this summer on my 1990 K2500, and inevitably will need to replace some of the fender and inner fender bolts and especially the U-nuts, or clip nuts, many of which will probably break off and spin due to rust (tried to attach a picture off the Web, but was...
  17. Kens1990K2500

    Recommendations for replacing valve covers?

    My truck with a 5.0 TBI engine has the original valve covers. Besides age and living in the rust belt, the fact that the previous owner ran it for some time with a cracked exhaust manifold, the covers are very corroded and ugly. I want to replace them and have been reading reviews on chrome...

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