Search results

  1. Matthew Jeschke

    Reinforce upper core support mount (fender)

    @strutaeng is the first thought I had. There's that 1/4 radius metal cross member that ties upper fender into the front windshield cowling. I could at lest take it back that far. I didn't see anything great to tie it into further up by the firewall which would be more ideal.
  2. Matthew Jeschke

    Reinforce upper core support mount (fender)

    I need to come up with a unique way to reinforce the upper core support mount. It currently ties into the fender but I've wrecked a fender already. I go off road, and might have been I didn't tighten up the bolt? Not sure, but I started to hear a noise, thought it was the dash but it was the...
  3. Matthew Jeschke

    Tru-Cool Max 40k Transmission Cooler

    I just installed my 40k tru cool cooler that's been sitting on my workbench for years now. Bought a kit from a guy off another forum who fabricates them. Worked like a champ with a couple minor issues... Main concern, management for lines of cooler is now not effective. The cool line (driver...
  4. Matthew Jeschke

    Can you identify these fuel tank parts?

    Watching several shift cable replacement videos and looked at FSM (shown below). There must be a couple styles of these shift cable clips some are a zip tie style. Trying to figure out that silly black clip in process.
  5. Matthew Jeschke

    Aluminium vrs steel driveshaft

    Oh cool, that's good to know. My father's truck has one, F150 w/ coyote motor. Pretty sweet engine, but I've not had a chance to take it for a joy ride :drunk: That said in the 90's he bought a GMT400 Silverado and then a Suburban. I was in my teens then and new driver! We had a couple OBS ones...
  6. Matthew Jeschke

    2001 yukon electrical issue

    You can also do a current draw test. Don't start anything, with car off (and doors closed for a while (BCM may wake up if you fiddle with doors). Hook a DMM / volt meter in series w/ either battery cable... That is disconnect one of the battery and complete the circuit with the dmm. Read your...
  7. Matthew Jeschke

    Junkyard windshield

    Hey @Larryjb cheers from sunny Arizona! I used to frequent BC on my vacations. A windshield was added to each trip budget! Pretty well guaranteed we'd need to buy one after the Alcan highway!
  8. Matthew Jeschke

    Aluminium vrs steel driveshaft

    Thanks @strutaeng The GMT800 chassis is really fun to work on. I bought a C5 years ago but haven't touched it. Nightmare to work on. Needed something to tinker with! Civil Engineering sounds about right. It was just that fellow engineer radar haha. Civil is really cool especially because we had...
  9. Matthew Jeschke

    Aluminium vrs steel driveshaft

    @strutaeng interesting! You're one smart guy. Are you a mechanical engineer? I studied computer engineering back in the day so know enough to be dangerous with the machinal load stress stuff. I was just mainly curious about the Aluminium as I could probably get one for peanuts. Internet search...
  10. Matthew Jeschke

    Aluminium vrs steel driveshaft

    Yeah, makes since. I'd think the steel driveshaft would be superior, especially cause is smaller diameter possibly of negating potential advantage of aluminium which is a bigger diameter (moment of inertia). I was surprised when I started working on these trucks and a few others to see aluminium...
  11. Matthew Jeschke

    Can you identify these fuel tank parts?

    Oh cool thanks! Excellent, I may need a new clip I noticed it doesn't have anything to hold it up. It must have broke off when I swapped in my new transission. Any clue what the horse shoe looking one is for? I think it must loop around a couple lines to hold them together is my best guess...
  12. Matthew Jeschke

    Aluminium vrs steel driveshaft

    My 2001 Tahoe setup has a steel driveshaft. I've been curious why GM / Chevy switched to Aluminium. I'd think they'd break easier? I see claims they make better gas mileage but wouldn't that be EXTREMELY minimal. Like a 1/10 of a MPG maybe? They are lighter but all the mass is near the center...
  13. Matthew Jeschke

    Can you identify these fuel tank parts?

    Found the white clip on this video at 6:03 & 6:07 but it is kind of fuzzy to make out what it is holding... I wonder if mine broke? If memory serves me correctly it just kind of fell on me when I dropped the tank and couldn't figure out where it came from.
  14. Matthew Jeschke

    Gas pedal

    My Corvette was professionally tuned... He reconfigured all the throttle by wire stuff. It works SO awesome. I'm tuning my Tahoe by myself but I don't have the electronic throttle on the Tahoe. Here's an idea of what settings are in the computer for your electronic throttle. I'd venture you...
  15. Matthew Jeschke

    Junkyard windshield

    I talked with a glass guy. He says the shops have a power tool to cut them out which works great... I don't know what the tool is called or what it costs. Maybe I just buy that tool to cut the one out at the junkyard?
  16. Matthew Jeschke

    Long Roadtrip in Yukon 2500?

    I'd replace checkballs with the plastic ones in 4L60E / transmission. As long as under service pan also go to painless accumulator. Who works is well under $100. Otherwise if is a 4L60e, failure mode is those dumb checkballs going through separator plate. Then clutches dont lock up and burn out...
  17. Matthew Jeschke

    Gas pedal

    I have HP tuners... my truck is a cable which is what I bought HP tuners for... There is a page of calibrations for the throttle by wire. My C5 vette has throttle by wire and works AWESOME. It is definitely a better system than the cable IMO. Sorry to hear yours is too sensative.
  18. Matthew Jeschke

    Can you identify these fuel tank parts?

    I posted about this in a different thread on changing my fuel pump... A while ago I dropped my tank to change the fuel pump. Well I get a gas smell occasionally. I think it's really the PCM delivering too rich a mixture (separate issue). However, I did go through the evap system and manage to...
  19. Matthew Jeschke

    At home alternator rebuild?

    Yeah same here. I'm getting some electrical issues... I am not sure if this is related to my O2 sensors acting very weird sometimes. They read the wrong AFR (I have a wideband) and start running me at around 13:1 instead of the 14.7 I tuned it for until I connect my PCM (Diagnostic port) to my...
  20. Matthew Jeschke

    How to Operate the 4WD?

    There are a couple different styles. This is the most affordable style HERE It slides in and increases the surface area so the protector lasts longer, versus the factory design that is just a small clip going over one of the lugs on the pump half. This is what I used. It's a new pump face...
  21. Matthew Jeschke

    How to Operate the 4WD?

    The clutch pack works with the encoder motor to pulse the front diff on and off for the auto function. This same technique is used on other vehicles, not just the GMT800. I believe Subaru uses a similar system, perhaps even the NP246 on some models as well. I've never had issue using it off road...
  22. Matthew Jeschke

    How to Operate the 4WD?

    I didn't read all the other posts, so if somebody already posted these details I apologize. The NP246 TX case is pretty sweet. I took a couple apart (separate thread). I'm assuming that's what you have as you mentioned the auto 4wd. It's designed to work by pressing Auto, 2hi, or 4hi while...
  23. Matthew Jeschke

    At home alternator rebuild?

    I ended up buying a 250 amp alternator. I have run it since July of last year. Was nothing short of a small fortune to buy. Having some little electrical gremlins so I pulled out my power probe and started checking grounds. Then checked the alternator. The alternator at idle w/o any...
  24. Matthew Jeschke

    Bleeping QD lines to evap / fuel system

    @Meathead16 thanks! Yeah I cry when I realize the Chassis & drivetrain on these GMT800s is KILLER awesome but the rest of the truck is a heaping pile of pure crap. It's been an uphill battle keeping from disentigrating since I bought it. However, that said, I bought mine in Rio Rico by AZ Mexico...
  25. Matthew Jeschke

    Gas smell 2022 Tahoe inside the cabin.

    Definitely a fuel leak! I am troubleshooting possibly same issue. If you get a chance get under the truck and feel the lines above the tank. You cannot see them but you will feel them pretty easy. It's a bit of a squeeze but can get a hand on top of tank where the fuel sending unit lines come...

Forum statistics

Threads
132,713
Posts
1,873,069
Members
97,537
Latest member
CHENTE

Latest posts

Top