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Hey guys, I recently traded my CT4 BW and have a few odds and ends for sale. I really don’t have prices, just PM me with an offer. Honestly, no reasonable offer will be turned down. Cupholder, EZ Flo oil drain valve, factory V badge (never used), real carbon red start button cover, OEM lug nut...

Hey all, I changed the oil in the car, 3rd change in 15,000 miles. Always done it myself. I get the CEL and a "Reduced Acceleration" message on the screen. Always 7qts Mobil 1 5w30 Dexos1. This is the first time I've seen this message? Any ideas before I take it to the stealer for help?

I've been following these guys on FB and IG for a few weeks now. They are finishing up a TIG fabbed exhaust for the 4BW. The valves are still functional, from what I can tell, it sounds kinda ricey, maybe its the mufflers they chose, idk. The stock sounds throatier than this. but to each his...

I installed the front 2 over the weekend, and wanted to offer up the other 2 for someone that wants to add these. The rear of the CT4 has a large jack point already and no good place to add these pads. I didn’t see a pinch weld point back on the rear half of the rockers.. So I installed the...

Does anyone know how to remove the reflectors on the rear bumper? I tinted mine while they were on the car, but now I want them to light up. Any ideas how to get these out without removing the whole rear cover assembly?

I bought a set from the local AutoZone today. I just wanted to swap the stock chrome for a black set. These looked smaller. Initial inspection: I put my caliper across the taper and it was .8 vs the OEM at .9 of the diameter of the bite marks on the lug. They also weren't as deep as the OEM...

I was on the highway heading into work this morning, and a new Accord pulled up. He was doing that jump forward, fall back thing at least 5 times... The next time, we were doing about 65mph, I bumped down to 3rd and was waiting for him to bump it again. When he did, I stood on the pedal... We...

So I bought a set of these for my car, and they were lost in shipping. So I bought another set. Turns out both showed up at my shop at the same time. These are the same ones sold by SavageCadillac. Rather than pay for return shipping, I’ll sell them for $55 shipped. I only have one set, I’m not...

Anytime I'm on that site, these are in my face... I don't want to cross that "ricey" threshold, but my car is black and I think these would be killer!! Wondering about the fitment and any real world experience with them.

I have the tech bronze wheels. When I bought the car they matched the bronze calipers. Fast forward a year, my wheels are a pewter color now and the calipers are still bronze... I wasn't a big fan of either, figured I could swap the wheels or have the calipers painted... I picked up an order...

I have PDR, and use it as a dash cam, but its not quite as good as a real dash cam. So I have a ton of GM rewards, I figured I'd pick this up. Anyone have this, is it a worth while addition? Any pics of how its mounted...

Has anyone with a JB4 tried transferring that app to a new phone? Its a $28 app, and I cannot seem to transfer it from my android to my new Iphone. I was hoping there was a way to move it over without having to buy it again. I emailed BurgerTuning tech help, but got no response.

I picked up an upper trunk liner and it showed up today. Not bad for $60, thought I'd post up and share. As much as I'm skeptical about Chinese wholesalers, I thought I'd take my chances with this one.

I understand "different strokes for different folks" but wtf? There are just no words... https://www.tuningblog.eu/en/categories/cars-from-az/donker-cadillac-ct5v-436102/

Anyone have a current list of JB4 maps for the 4BW?

I saw these and wondered if the non lighted cars still have the harness in the door. Is this a plug and play option, or is more required to make this happen?

I installed Alexa per the factory App and it's coming back with a CLI-101 Error. Anyone run into this? I searched the web and everyone says GM sends them to OnStar who is also no help.

Anyone know of a company that makes the exhaust valve control better than what we have? I dont want to chop the pipes off, but the valves close and open based on a formula involving throttle position, RPMs, and speed. This is to keep the free flowing exhaust notes minimal when cracking into it...

I'm cruising today and hit what we call the Bonus lane, (small extra lane for exiting & merging) No one was in it so it was power lane. Long story short, car hit 115mph, it pulled back like the governor kicked on, and threw a flashing CEL for about 10 seconds, and the cluster started flashing...

Hey Guys, I bought a car that was ordered by someone that bailed out last minute. The order had Black paint, Bronze calipers on the bronze wheels. I've been thinking about having them redone in "Acid Green". At the risk of ruining the authenticity of the car, and possibly adding a bit of "rice"...