r/GMT800

Picked up this Silverado over the weekend. What oil are you guys using in your 5.3L?
▲ 11 r/GMT800

Picked up this Silverado over the weekend. What oil are you guys using in your 5.3L?

I snagged this sale over the weekend and thought it would be a great time to get my 5.3 tuned up. What oil do you all use in your 5.3s? A friend suggested I try 15w40 Rotella, but I’m seeing some mixed reviews online. She’s not the most attractive, but I got her for what I’d consider a steal! It’s a 2006 Silverado 1500 with 170k miles (the lowest mileage I could find on the marketplace during my search). The previous owner replaced the front end after an accident. She currently has a GMC Yukon front end, which I’m currently looking to switch back to a Chevy Silverado front end. Everyone seems to prefer the “cateye” 03-06 front end, but I’m actually looking for a “bubble eye” 99-02 front end for my Silverado. Thoughts on a bubble eye conversion?

u/oogumboogumz — 7 hours ago
▲ 28 r/GMT800

Installed a shock on my tailgate to prevent it from slamming down.

u/Absolarix — 8 hours ago
▲ 1 r/GMT800

05 Sierra SLE- Keep or Sell

I've hit a dilemma with my 05 Sierra 1500. It is now mechanically totalled. This truck has been in my family for like 9 years now and I took ownership of it 3 years ago. The transmission has been doing funny things for a while now and I've discovered that the engine is not too good either. I was replacing the knock sensors and while putting the valley cover gasket on I seen that every visible cam lobe is completely trashed. It looks like someone took a grinder to the lobes. I do the oil changes every 3k and recently the last couple have been glittery.

The transmission is constantly locking and unlocking the torque converter. I have no idea how to even start fixing that. It's had regular fluid services every 50k miles according to the carfax. It's the 4L60 so I think it's dying.

The brakes are fucked. It's got all new pads (and rotors),shoes, calipers, wheel cylinders, and fluid but it absolutely will not stop good. I think it needs a booster because it hisses real bad when I press the pedal.

It's also rusty as hell. Ever since I've acquired it the body has been falling apart. I recently found out that the interior trim could be considered structural. At this point I'd would need to dump a lot of money into a truck that clearly just wants to die. I've tried keeping it alive and working but I feel like I'm in over my head on this one. Is it time to let go?

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u/SuperReleasio64 — 6 hours ago
▲ 3 r/GMT800

Hot rod GMT800

Which is a better platform to start with for a fun weekend toy? Something to lower for better handling, cam, heads, intake, exhaust:

GMT800 - 2WD, 5.3 Yukon/Sierra
GMT800 - AWD, 6.0 Yukon Denali/Escalade
OR
GMT900 - AWD, 6.2 Yukon Denali/Escalade (07-09 pre AFM)

Your thoughts?

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u/Quiet-Rent2256 — 13 hours ago
▲ 8 r/GMT800

Update from my previous post

Finally found the time to lock in and finally do my tie rods. I do it one piece at a time, and it cost me a lot of dimes

u/axjzj — 12 hours ago
▲ 63 r/GMT800

Took my big girl wheeling!

Just got home from a day of off-roading and overlanding around the Sierra Nevadas in California. I was impressed with how she performed! Didn’t get too wild, I was focused on just exploring and enjoying the trip. She brought me to some amazing, isolated views!

u/lotuskid731 — 18 hours ago
▲ 4 r/GMT800

What Read Brakes Do I Have?

Like title states i got an 03’ Z71 tahoe, the rear has a single caliper. Here’s a photo of the front and back if someone can help me identify them!

Reason i ask is 2wd models are like this, and all the kits for 4wd im seeing are for dual rear caliper. even after putting in my vehicles info it says both fit!

Thank you in advance, sorry if this is a dumb question

u/zoogru — 14 hours ago
▲ 5 r/GMT800

My coolant just... dissapears? evaporates?

My family owns this old Silverado that we use for errands and stuff, appereantly the motor was rebuilt not long ago too.

Anyways, we have to buy coolant every month, and fill it up using half a container every two weeks, this kinda gets annoying.

We dont see any leaks under the truck, my dad checked the pil and it isn't getting milky or mixing with coolant, so, where can the coolant be going? Its not leaking, its not going to the oil, so does it just evaporate that fast?

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u/Ok-Trouble1183 — 23 hours ago
▲ 3 r/GMT800

Looking to replace 12v port in ‘01 Silverado

As the title says, I’m trying to replace one of the 12v cigarette lighter ports on my 2001 Silverado. It’s the style where the 3 ports are underneath the HVAC controls. In the immediate future I’ll be installing the Metra double din conversion kit in order to fit a carplay head unit so I’m looking to add the Scosche dash port in as well to make it seamless.

When I remove the trim piece around the steering wheel, gauge cluster and head unit I don’t see any way to get behind the ports in order to replace them. Any help you guys have would be deeply appreciated, thank you!

PS - I just realized I could remove this little plastic cube next to the passenger air bag toggle, do you guys have any cool suggestions that could go in there?

u/th3echelonchair — 19 hours ago
▲ 0 r/GMT800

MY TRANNY IS ALLISON, WHAT FLUID

Hosses, are we spending an extra case-of-beer money for that TES 668 stuff or is the Dex VI just fine?

2004.5 2500HD 140K miles, probably 50,000 of which were heavy towing (5th wheel RV). Now she's relegated to towing a 6000lb boat trailer and occasionally hauling Barb's shit back from the Home Depot.

GOBBLESS

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u/H0SS_AGAINST — 1 day ago
▲ 105 r/GMT800+2 crossposts

Who needs a real pickup when you can have this?

Asking $1800 obo

Facebook marketplace is a wild place

u/Doofy_Grumpus — 1 day ago
▲ 11 r/GMT800

express van steering

did a little upgrading. Idler setup and gear box shaft had a little play and scaloped tires. Hopefully this fixes it permanently. kryptonite parts match up to a 00-06 1500. Gearbox is likely identical to the psc unit but just sourced off rockauto from the oem lars for half the price

u/fredrickdgl — 21 hours ago
▲ 2 r/GMT800

It's already toast...

I just bought this a few weeks ago and it's already time to get rid of it. I'm at a loss...

Bought a 2003 Suburban 1500 with a rebuilt trans 30k ago and it's already clunking and leaking after a road trip from socal to southern utah and back. Engine also starting to leak oil after an oil and filter change. I think I'm ready just to move on as I don't want to put more money into it. Has brand new tires on it, less that 1500 miles. I'm in socal if anyone is interested, I can provide some details. Admins, Please remove if not allowed.

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u/jmc92198 — 1 day ago
▲ 1 r/GMT800

Steering column swap 02-03

Does anyone know if a steering column from a 2003 Tahoe will work in my 2002 Silverado 2500HD?

My steering wheel is destroyed, and my tow/haul, horn and cruise don’t work. I sourced a really clean steering column locally, parted out from a 2003 Tahoe. Same features my column currently has. I’m seeing mixed reviews online when trying to check compatibility.

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u/OMGitsmooseMAN — 1 day ago
▲ 154 r/GMT800

My 1999 Silverado 1500

Just wanted to share my truck with you guys.
Greetings from Luxembourg🇱🇺!🤠

u/scraaper — 2 days ago
▲ 30 r/GMT800

Check Stuff!

As summer rolls around don’t forget your poor spare tire.

5 hours from home, rolling at 75mph 8minutes from Ohios border in PA, rear right tire exploded.

Checked tires, fluids, brakes a couple days before. All was fine. Must have picked something up in a road zone in PA.

The spare happened to be as old as the truck, AND low on air, but driveable to the nearest town (8mins).

All in all, amazing start to my wedding week 😂 however all is good now and the White Whale has new shoes, albeit less beefy than the Wranglers…

u/CometAuto-Detailing — 1 day ago
▲ 9 r/GMT800

Engine Oil leak

Based off your guys’ expertise where do I start? It’s starting to be too much and the truck runs great so want to take care of it. Lower pan gasket? Rear main? Oil is everywhere

u/1slowss_ — 1 day ago
▲ 9 r/GMT800

Mysterious connector?

Took off door panel and found this unused connector. Does anyone know what could it be? Everything on my door is plugged in

u/2DollarsAnHour — 1 day ago