2003

  1. ShookieJay

    '03 Tahoe 5.3/4L60/NP246 Swap to 6.0/4L80

    I have an '03 Tahoe with the 5.3 Flex, 4L60E, and NP246 (auto 4wd) transfer case. I have the opportunity to buy a low mileage rusted out truck for parts and I'm wondering how straightforward it would be to swap the drivetrain from the junker into my Tahoe. The donor is an '06 Silverado 2500 HD...
  2. ShookieJay

    Coolant Reservoir Level Sensor

    The past couple days I've been getting a low coolant message when I start my '03 Tahoe. The level in the reservoir is good and temp has been normal. Assuming the sensor is going bad. My question is, can the sensor be replaced or is it molded into the reservoir? I searched online for the sensor...
  3. OldCrunchyTaco

    Trouble shooting ECM & Security Lock

    Hey there Y'all, I'll put the full story below, but I was wanting to know if there was a way to trouble shoot a ECM and the security lock on a 2003 Chevy Tahoe. I have a OBD scanner that can't connect to the Tahoe, but will to other vehicles. The security lock is constantly on when I try to...
  4. P

    2003 Chevy Tahoe LT 4x4 wheel recommendations?

    Hey ya'll new member here. Just bought a 2003 Chevy Tahoe LT 4x4 in the dark grey color. Super excited to start building this car up. I want to enhance it's offroad capabilities but also keep it reasonable for the street-highway as it is my daily driver. Anyone have recommendations for wheels...
    • PNW_Tahoe_03
    • Thread
    • 2003 4x4 second generation suspension suv tahoe tires wheels
    • Replies: 9
    • Forum: Exterior
  5. 0

    4wd to 2wd

    So I’m basically trying to make my Tahoe a 2wd for an easy lift, what would I have to do to make it where I can run a spindle lift on a 03 4wd Tahoe. As far I know just have to take out cv’s out and run 2wd hubs. Any info Is appreciated.
  6. ShookieJay

    03 Tahoe Polished Aluminum Door Trim Restoration

    Looking for tips and product recommendations for polishing the aluminum trim on the lower part of the doors on my 03 Tahoe. They have taken on a cloudy appearance and I would like to make them shine again. I've learned from past experience that anodized aluminum is tricky to clean up, assuming...
    • ShookieJay
    • Thread
    • 2003 aluminum anodized door polish tahoe trim
    • Replies: 10
    • Forum: Exterior
  7. ShookieJay

    Grinding/Chattering Noise From Transfer Case

    2003 Tahoe LT, 5.3, 4L60E, NP246. I recently completed a roughly 1500 mile round trip from Connecticut to Tennessee, and back. On my way there, I started to hear a squealing noise coming from the front end. First thought was a wheel bearing, so I pulled over to check it out but didn't find any...
  8. ShookieJay

    Exhaust Flange Gasket and Hardware?

    Hello all, I'm new here so forgive me if this has already been asked somewhere. I searched a bit and didn't find anything so here we are... I have a 2003 Tahoe LT with the 5.3. Considering buying a Flowmaster Force II catback exhaust. I'm looking for a gasket and hardware for the flange that...
  9. T

    Clicking on passenger side

    I’ve seen one post about this, but the answer didn’t work for me. I have a 2003 Suburban that I inherited when my dad passed away. It is in great shape and I love driving it (especially with the Bose stereo!). It has a problem where there is a loud clicking sound in the front dash on the...
    • Trowzer
    • Thread
    • 2003 actuator relearn clicking hvac
    • Replies: 6
    • Forum: Interior
  10. clemenshess97

    lower steering shaft worn out ?

    Hello, I am wondering if anyone has had to replace the lower steering shaft on a 03 Tahoe. I feel like the joints are worn out...when I grab the lower steering shaft I feel looseness towards the lower part of the shaft, where it connects to the steering gearbox. I have already replaced the...
  11. Project Denali

    Build thread: Project Redfire

    Hey family, I was in the market for a truck and had been looking very hard for just over two weeks. I made a list of what I really wanted and stuck to it. Boy did I get more than I was hoping for! This beautiful 2003 Tahoe LT popped up for sale in West Virginia and after almost a week of...
  12. ncalvo

    03 z71 tahoe parasitic drain

    I have had my tahoe for over 10 years now, and the electrical gremlins are really haunting me. Currently (no pun intended) I have a parasitic drain, and narrowed it down to the info circuit. Interestingly, when I pull the info fuse out, and reinstall, it appears the drain disappears. It also...
  13. H

    Leveling Kit w/ Shocks

    Planning on getting some keys and spring spacers to level my 2003 tahoe LS 2wd. I have been reading though the forms and keep seeing people talking about Bilstein shocks. This may be a stupid question but do you just need to replace the rear shocks or both front and rear?
  14. ncalvo

    03 Tahoe w/ Bose - Aftermarket head unit help (radio stays on)

    Hey everyone. I have an 03 z71 tahoe w/ bose system, no on star, no steering wheel controls. (UQ7 w/o Y91 I believe denotes that) 8 years ago I had a pioneer head unit installed with an Axxess module (GMOS-04) to retain door chimes and what not. It has functioned properly for 8 years. Until...
  15. ncalvo

    GMT800 / GMT900 Brakes (03 z71 tahoe)

    Hey everyone, I have been trying to figure out the best bang-for-buck braking upgrade. I have an 03 z71 Tahoe and I need to replace rotors/calipers/pads/lines, it makes sense to upgrade the front brakes to the better GMT900 setup, especially because it appears to be a simple swap. I'll be...

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