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    1993 C2500 Suburban 454

    Sale pending...
  2. W

    1993 C2500 Suburban 454

    Forgive the info that I know GMT400 owners already know. I'm cross-posting to a few forums I'm on. Best to email since I'm not on here much. [email protected]. This truck has more new parts than any sane person should ever drop into a vehicle that isn't some sort of show car. And there's...
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    '93 454 TBI in California...

    Bump the timing up to 6-8 degrees BTDC. That was the most notable power upgrade to my 93 TBI 454. Not technically smog legal since CA will check your timing when you smog it, but it takes just a couple of minutes to readjust it back. Mike
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    OBS Camber/Caster Knock-outs - how to tell if you have them.

    I have the knockout tool. It did a nice job with it. Whether it's worth it versus knocking them out with a punch, dunno, but I didn't have to clean up any rough edges. It's obviously a one-time use thing (unless I get another truck), so if anyone wants it, shoot me a PM. Mike
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    Delphi TBI distributor discontinued(?). What's next best option?

    Huh. Might explain why Summit made me click a bunch of buttons assuring this was off-road use only (thanks, CA). Maybe I'll throw it in if/when I throw in their coil and some new plugs. Thanks for the info! Mike
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    Delphi TBI distributor discontinued(?). What's next best option?

    Aha! I figured it out! So, when the mechanic broke the vacuum line, he didn't just replace the line from the solenoid to the valve. He also replaced the line from the TBI to the solenoid. Problem is, he swapped the lines at the solenoid! Minor goof, I guess, but the diagram is right on the air...
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    Delphi TBI distributor discontinued(?). What's next best option?

    ***UPDATE*** Vehicle is back from the mechanic. DUI distributor is in. I went ahead and swapped the Delco ICM onto it before he installed it since the only minor gripes I could find on the DUI was in regards to premature ICM failure (seems like these trucks really only like Delco ICMs). And...
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    Delphi TBI distributor discontinued(?). What's next best option?

    I found that one, but also found it listed on Amazon here: ACDelco 19179575 GM Original Equipment Ignition Distributor, Remanufactured https://www.amazon.com/dp/B001S34JP0/ref=cm_sw_r_cp_apa_i_NCXsEbD7Y0YX8 That poor of reviews, to me, says "steer clear". FWIW, I fired off the parts cannon...
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    Delphi TBI distributor discontinued(?). What's next best option?

    Yeah, but the problem is that Jegs' website states that it ships from the manufacturer. In talking to Delphi, they don't have these anymore. That's the problem I've had with all the sources I try; they all say they have some but then they don't. Mike
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    Delphi TBI distributor discontinued(?). What's next best option?

    It looks just like the distributor off my TBI, but the ICM PN is slightly different. Wondering if I could buy it, swap ICMs with the Delco that's on the truck now, and run it? Or go with the DUI, which looks like it gets great reviews everywhere. Just a bit concerned that they want me to also...
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    Delphi TBI distributor discontinued(?). What's next best option?

    Well, I guess this is where I sheepishly admit that, while I have a nice 1320electronics scan tool and both ALDL Scan Tool and ALDLDroid loaded on my phone, I only understand a fraction of the info it tells me. I know knock count is basically none at stock timing, none at 8 degrees BTDC if...
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    Delphi TBI distributor discontinued(?). What's next best option?

    I've been trying to source a Delphi CZ20001 for my 93 Suburban 2500 (454) for a couple of weeks now. Every place I try cancels the order. I finally called Delphi and they said it's no longer available and don't have a replacement option. All the aftermarket options out there have horrible...
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    adding bluetooth to the factory radio?

    Why not just use a basic FM transmitter-style BT unit? I have one in my other car that cost maybe $15 on Amazon. It plugs into the cigarette lighter and it’s also a USB adapter so win-win. Sounds great and works just fine. Mike
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    Warrantys?????

    For a truck that ceased production in the late 90s? Is that a thing? Mike
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    Aux. radiator fan barely turns ???

    My vote would be for the jump pack method, too. Mike
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    Aux. radiator fan barely turns ???

    On my 93 c2500 with a 454, it's triggered off a coolant sensor in the head. Passenger side, I think. I wired in a relay so that now it comes on any time the AC clutch is engaged. I did it more to help the AC system stay cool than to help with overheating, but same same. Helped a bit, didn't cost...
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    Falls flat under acceleration

    How does one check while under load, though? Mike
  18. W

    WTB: Clean rear bumper for Suburban in SoCal

    Looking for a clean rear bumper for the Burb. Scuffs in plastic OK, but needs to have good chrome, no dings or bends, and no rust showing on the outward face (surface rust on inside no big deal). Bumpers from Suburban, Tahoe, Yukon, or Blazer should all swap. I'm located in North County San...
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    Radiator Upgrade - Recommendations?

    I have zero experience with them, but I've been eyeballing this guy for a bit... https://www.radiatorexpress.com/product/radiator/chevrolet/1993/c2500%20suburban/base/74l-v8/222186/1302130 Mike
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    6-7 BTDC ok for TBI 454?

    All - In my never-ending quest for just a smidge more power and maybe better MPG, too, I started playing with timing yesterday. I went from the stock 4 degrees BTDC to somewhere around 6-7. She seems a bit more perky all-around, definitely a lot less throttle needed to get up and around. I...
  21. W

    Best riding shocks ????

    FWIW, Bilstein 4600s are stock on several applications. So it's stock-looking....kinda. Lol. Mike
  22. W

    Best riding shocks ????

    5100 is for lifted applications. My research led me to believe they're a bit rougher riding than the 4600s. Mike
  23. W

    Best riding shocks ????

    +1 for 4600s. Mike
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    Canvasback cargo protection for Tahoe/Yukon/Suburban - PLEASE READ CAREFULLY!!

    I'm selling a brand new Canvasback interior cargo cover, grey, that's ALLEGEDLY for a 92-95 Suburban/Tahoe/Yukon. There's a PN on the paperwork inside that says 36345, written in pen. I bought this on eBay a few months ago and just now got around to trying to install it. I'm not sure what...
  25. W

    Retro fit keyless entry

    If you already have power locks, it's easy. Kits can be had on eBay and Amazon for as little as $20. Hardest part is figuring out wiring. Check out the website for Bulldog Security. They have some instructions. Mike

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