r/GMT800

Heater core Connector
▲ 2 r/GMT800

Heater core Connector

Replacing the heater core connectors right now with the metal ones on my 03 1500, how do I get this connector from the inlet off? I don’t want to break anything if I don’t have to in case I have to reinstall the old connectors for whatever reason. Looks like that plastic band is holding the hose on

u/Smokem22 — 6 hours ago
▲ 5 r/GMT800

Is my truck Hd or normal

I just bought this I was wondering if someone can let me know the grille looks hd b it I’m not sure on the hood if anyone can let me know

u/5Sant3 — 16 hours ago
▲ 1 r/GMT800

AWD Tahoe, replacing pickup tube oring and can’t get front differential to drop down far enough to get oil pan out. It’s completely unbolted. Any tips?

u/okcatboi — 9 hours ago
▲ 40 r/GMT800

Dumb trade? IDC. I’m happy

Almost a year ago I straight traded with my mechanic my beloved 90s Lexus coupe (160k miles) for this 00 Silverado work truck (150k; 90k motor swapped last August). My daughters are going off to college soon and I needed a truck to move em out. Also I’m older now so the lowered car was getting more difficult to get in and out of.

On the surface, I know it seems ridiculous but the Lexus needed a timing belt soon, transmission was slipping and noisy, it was leaking oil, and the only thing changed on the suspension were the coil overs. Everything works well on the truck. It leaks oil but I’ve already thrown parts at it and I’m waiting for the next oil change to replace the oil pan gasket; fingers crossed it’s not the rear main seal. I know the body is clapped but I’m so proud to drive it. She’s rust-free, and I’ve done more work on her myself than I’ve ever done on any of my vehicles: sanded and painted the hood, replaced full front suspension including rack and pinion so she handles like new. A friend wrecked his truck so he’s letting me have his SS rims and I’m saving up to fix the body and paint.

My fam and friends can’t believe I made the trade. Am I the moron they say I am?

Appreciate all the positive feedback to validate my decision, but expected a lot more opposition. I gotta figure out how to post this to a JDM or Lexus forum. No worries I'm gen X and am used to being insulted to then suffer in silence while still believing I look like Brad Pitt.

u/karlogtwins1c — 17 hours ago
▲ 5 r/GMT800

MPG

99k miles currently getting 14mpg. 3.23 gears she’s on 33s and has a full tool box in the bed. I know these 4.3s weren’t the greatest on mileage but most forums online say anywheres from 18-24mpg on 33s. Anything to check, replace, take a lookey into etc. thx in advance

u/Bulky_Translator_300 — 18 hours ago
▲ 65 r/GMT800

Sharing in case anyone needs the help

Thought I’d share a fix that worked for me. I got an aftermarket muffler on my 2004 5.3L and it revealed that I was smoking on startup- burning oil. Spent some time researching that led me to needing an updated driver side valve cover/pcv design. After 3 months of seeing the smoke on startup I put on an updated valve cover from Dorman and a new pcv hose and haven’t seen any smoke on startup ever since. Adding a pic of my valve train too since I was in there, how’s she looking for 180k miles? Looked pretty good to me

u/scarr-1127 — 18 hours ago
▲ 3 r/GMT800

What is Happening

2002 Tahoe. Sometimes I drive for days and no lights. Other times it starts with these lights on. What is happening? Same routes. Same bumps. Just weird. Any help is appreciated.

u/kaladilla — 16 hours ago
▲ 2 r/GMT800

GMT800-GMT900 brake upgrade

I’ve got a 01 sierra, I purchased front/rear rotors, calipers and pads off a 2013 Tahoe that is being parted out. I already did the front swap which was a very noticeable difference, I’m here getting ready to do the rears and I am curious if the stock GMT800 parking shoes are going to work inside the GMT900 rotors? Didn’t even cross my mind when buying the parts. Has anyone else done the rear swap?

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u/Particular_Idea7324 — 18 hours ago
▲ 3 r/GMT800

Faint knock :(

Where do I even start? It sounds like a pulley/tensioner in real life wiggling around but I cant seem to pinpoint the noise! I’m just really hoping it isnt lower end noise! Have any of you run into a similar thing? Im a fairly new owner and am not used to taking care of v8’s.

u/amerxmr — 18 hours ago
▲ 6 r/GMT800

Gmt800

First day I picked it up vs now!
Needed all new fenders, a new box, found a crack in the frame, lots of work lol.
Just ordered billet flame door handles to match the grille super excited !

u/briannawwilson — 13 hours ago
▲ 22 r/GMT800

Best purchase ever!

2003 z71 Burb with 266k, punching myself because I didn’t get into one earlier! Put 20k on her in the last year.

u/Thehyphyboy — 20 hours ago
▲ 1 r/GMT800

Having Hard Start Sometimes

When it has been sitting for a little while sometimes when it starts it starts with a low idle then kicks up to high idle. But sometimes it dies and starts immediately on restart. No engine lights so i dont really know going to clean the throttle body to see if this helps. It's an 06 Silverado 5.3L and help would be appreciated

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u/SweatyIllustrator942 — 23 hours ago
▲ 3 r/GMT800

Does anyone know the correct replacement for this?

Im not sure if I’ll find one with the same thickness, but my suburban has the g80 locker and this c-clip is worn down a good bit.

Why does the ones commonly sold have one silver and one gold one?

u/GOLDINATORyt — 1 day ago
▲ 78 r/GMT800

Valve train on a 06 Silverado with 305k 5.3

How do I clean this without taking heads off?

u/bigjit67 — 1 day ago
▲ 13 r/GMT800+1 crossposts

What are your favorite parts resources?

I didn’t see a post pinned like this so forgive me if this has been done. Thinking this could help out more than just me when it comes to keeping my GMT800 in good condition.

For general stuff replacement parts, lighting, interior pieces/upgrades:

For suspension (stock or modified lifted or lowered):

For engine/drivetrain maintenance:

For engine/drivetrain performance:

Any other categories you would like to add:

Submitted:

Used Parts:
https://www.car-part.com/ or https://lkqcorp.com/buyparts/

New Parts:
https://www.rockauto.com/

User/Repair Manuals:
https://lemon-manuals.la/ for user and repair manuals

Performance/Swap Parts:
www.speed-engineering.com www.briantooleyracing.com
www.texas-speed.com www.richardholdenerperformance.com

Chassis/Suspension:
www.detroitaxle.com

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u/restingmitchface_ — 1 day ago