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Borrowing this idea from GMfullsize.com it's very popular over there, basically post a pic of your vehicles as they are right this minute, clean dirty torn apart, if you own more than just a gmt800, like quad, boat, camper, car or other trucks you can throw those up too, it's a free for all...

What head unit/radio are you running in your truck? Pictures and what you like/dislike about them, difficulty of install, were modifications required etc. Figure we should have a thread about this, kind of a what fits what hits All input and info welcome! Sent from my iPhone using Tapatalk

Hey question for the guys with the 1999-2002 5.3L what does the flashing Check engine light mean? I know it has the message centre that displays when it needs help but can't find the flashing CEL, it went out shortly after, I'm assuming cuz its a bit cold the O2 sensors may be not used to it...

Hey guys, I would like to know more about the corvette servos people put into their 4L60e's I'm interested in doing it, just want to know what part or parts I'll need and how to put it in, any and all advice and info would great thanks Sent from Team Sierra

Is this seal supposed to be siliconed to the truck? Mine can be peeled back, just curious if I should re apply some sealant if required thanks guys Sent from Team Sierra

I have only ever used magnaflow or flowmaster, I like both brands and I'm very familiar with them, I know MBRP and AFE make good diesel exhaust kits, but how are the gas truck ones if anyone has them? Haven't really looked at them or know much about them, trying to research for my brothers truck...

My 2002 gmc Sierra ext cab 4x4 SLE sometimes won't let me turn the key unless I jiggle the steering wheel, I pulled all this phone crap out of yesterday The people who installed this system took power from my ignition wire... So I experimented with jiggling this wire while trying to start my...

Sad to say I sold my 1994 GMC Sierra extended cab short bed K1500 :( but I did buy a 2002 GMC Sierra to replace it! But I'll be getting another GMT 400 in the near future About the truck: -Extended cab -4x4 -SLE -6.5 ft bed -106,000 original KM when I picked it up a couple weeks ago -100% bone...

I'm looking to buy some of the GMC/Chevrolet big square tow mirrors with signal lights for my 05 Sierra, I think it'd be a major improvement in its appearance, where's the best place to buy some goo quality mirrors for a good price?

Wanted to fix up my flowmaster super 50 exhaust by overhauling to true dual and loud mufflers, called a muffler shop said it wasn't a good idea, better to have the one 3" pipe into a muffler and then to the 2.5 which is what I have currently, whats your guys experience?

How can I use the VIN of a truck to figure out everything about it? Like engine size, transmission, gearing etc?

I'm thinking I should change my diff fluids to royal purple, I heard it was good stuff, what are your guys opinions? Also is there an additive I need to drop in when I get around to it?

Just wondering if it'd be possible to put a 10.5 inch tire with a a different rim so not so much tire is sticking out on my 05 with the 4.5" lift kit I believe I have this kit http://bds-suspension.com/product?ma=5&mo=1&ty=9&yr=1999-2006

Do these trucks have a coolant temp sensor and the coolant temp sender like my 94? I think I'm having issues with the coolant temp sensor, sometimes it will show up in my cluster saying reduced engine power and I can't do better than 50 km/hr

i was wondering if they have gauge sets that mount on the pillar for 5.3L motors? also what do they show? and will i have to add sensors?

hey guys i have a beat up flow master cat back super 50 kit on my truck, i can't hear it over my tires, i want to true dual it with dual 45 exits What mufflers should i use for a really nice throaty deep tone? and id like to get some nice 12" long 3.5 inch opening with rolled tips cut on 45s?

Hey all! Figured I'd try my hand at a build thread, I'm also a member of GMT400.com and love that site! keeps my DD on the road and running great Anyways back to my 2005 Sierra.... It was originally my dads truck, he purchased it from a dodge dealership in 2006 with 25,000 km and a...