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  1. G

    Do I need different gears with 33” tires and 4” lift

    I'd get a truetrac to replace your factory G80 and don't forget you also have to regear the front on a 4x4.
  2. G

    Will a 1990 G20 grille and radiator support fit on my 1985 c10v

    wouldn't the easier swap be to the higher trim model grille from the same year with stacked headlights to get separate high and low beam?
  3. G

    Whats you gas mileage on your squarebody truck?

    driving at 70mph+ is what kills mileage the most on a squarebody. drive down the interstate at 60mph, if you can stand it, and your mileage will be significantly better.
  4. G

    TBI Issues

    it was spraying even with key "off"?
  5. G

    TBI Issues

    yes, constant hot and grounded by the ECM to pulse., but the injectors have separate wires off the ECM. so if they are both spraying they'd both have to be shorted to ground? most likely spot for that is at the air cleaner housing?
  6. G

    TBI Issues

    spraying by pulsing or just an even spray like the injectors are stuck open? the injectors shouldn't be pulsing unless the ECM gets a reference signal from the distributor with key on. maybe the injectors are stuck open, it is flooding and stalling, and still spraying fuel until the pressure in...
  7. G

    Heater Core how to

    Yeah, the heat will blow you out, even in my suburban! I rarely have to turn it up very much once the engine is warm or you will be sweating
  8. G

    Affordable AC Fix Squarebody Suburban W/ Rear AC

    If you can park in the shade, it makes a huge difference. It takes a lot of cooling power to overcome the giant heat soaked metal cab of a suburban. I have an aux fan that does help in stop and go. I have noticed that the heater core being hot all the time does heat up the under dash area...
  9. G

    Burning Oil At Start Ups

    looks like a 350 tbi suburban. I've always heard that blue smoke on start up is likely valve guide seals. but a little oil is seeping into the combustion chamber when it sits from somewhere.
  10. G

    TBI to Carb 1991 V2500

    ACDelco isn't routinely stocked at your local parts store, but is readily available online
  11. G

    No check engine light.

    Check ECMB and ECM1 fuses. If one is blown, you'll have to track down the short to ground.
  12. G

    Is rear side window identical on 1990 Burb and 1980s dual/bonus cab?

    I think they are the same. but the gasket changed at some point to cut wind noise. so if you have the later gasket you can just reuse it.
  13. G

    TBI to Carb 1991 V2500

    I actually do have a spare coil I also carry. I had ICM issues, but they were aftermarket parts. I use Delco parts 100% unless I am in a pinch.
  14. G

    TBI to Carb 1991 V2500

    a spare ignition control module is about all I carry that is TBI specific. and then the normal stuff - fuses, fluids, bulbs, hoses, wires, etc.
  15. G

    TBI Issues

    https://www.gmsquarebody.com/threads/1973-1991-service-manuals.14499/ find the drivability manual for your year and start reading, it has the knowledge you seek!
  16. G

    What have you done to your square lately??

    do a search, it's been discussed. or direct a garden hose into the cowl area and see where the water comes out. should ne behind the front fender on each side. may be a plastic trim piece to remove. it's a clean, flush, clean, flush repetitive exercise.
  17. G

    TBI to Carb 1991 V2500

    Getting ALDLDroid from the Google playstore (about $20) and an OBD1 Bluetooth ALDL reader from 1320 electronics or Red Devil River (about $90) is what I recommend. I think 1320 may also have a free app you can use.
  18. G

    TBI to Carb 1991 V2500

    it also shows engine light codes, which you can get without an app, but is faster on the app. there's only a handful of things a scanner can do better - like command the computer to do a few functions.
  19. G

    TBI to Carb 1991 V2500

    you see most key parameters the engine sees. here is my main home screen in ALDLDroid
  20. G

    TBI to Carb 1991 V2500

    I'll be the dissenting voice and recommend sticking with the TBI. just get ALDLDroid and an OBD1 Bluetooth ALDL reader and download the GM manual for drivability and TBI is pretty simple to maintain.
  21. G

    Factory Seats; Why do they suck?

    the seats in my 90 burb look a little different (bigger) than the blazer seats and they are OK for me. but they don't fold forward for passengers to get in like you need on a blazer.
  22. G

    What have you done to your square lately??

    looks like it is running down the kick panel. might be time to clean out the cowl drains.
  23. G

    1984 Suburban rear ac wire routing

    did you check for power at the switch? pretty sure the wiring runs up in the roof down the driver side.
  24. G

    TBI Issues

    hmmm. not sure about that. I'd think once the ECM sees the engine is dead it would stop pulsing the injectors.... you might check for intake manifold gasket or other vacuum leaks. put a timing light on each plug to see if each plug is receiving spark consistently. I once had an occassional...
  25. G

    Intake Manifold Install

    glad to help. I've tried to learn a lot about the TBI system because there isn't a ton of info out there. folks are either all in on carbs or have LS swapped if they wanted fuel injection. TBI is in the middle with a simple ECM but you still need some old school diagnostics like timing light...

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