newdude

Make sure your phone software is up to date. Some people have had issues lately with bluetooth on GM radios and their phone had a security update or something that fixed it.

I'd change the fluid and start there. 198F is nothing for the 8L90. They typically operate 180-200F stock.

I don't know when they changed it, but at least since 2023 the WT and Custom both have the 40/20/40 with the storage middle seat. Same for the rear seat storage on crew cab. If you ordered a WT crew with carpet floors and cloth seats you could order the rear seat storages for the seat backs. Available on Custom as well.

Thrust bearing is a very small window. But nice try. Turbo oil filter? Haven't seen any failures. Change your oil more frequently. Use a better oil than the factory oil.

There is a p/n called out in the one PI that GM has. Curt 57003 inline load adapter that is used for LED trailers that are having trouble with these newer trucks. No cutting, no splicing, etc. GM did update the lighting module around 2023 to better pick up trailers with LED lighting, but it still can happen. Here's the link to the Curt site for it - 7-Way RV Blade LED Electrical Adapter (Not a Wiring Extension) SKU #57003 by CURT The PI I am referencing - MC-10208985-9999.pdf Its not just a GM deal either. Newer Fords and Rams have this same problem. In another PI, they recommend that the trailer has a Pollock brand 7 way on it as that is who makes the truck sides for the OEMs. GM is also big on making sure the trailer is trouble free. So no wiring issues, all lights are functional, better quality 7 way plug, etc. The other PI I am referencing - MC-10178359-9999.pdf The model year range is older but it is the current PI for 2014-2026. It calls out the Pollock RV HD 7 way they recommend.

Sounds to me that its on the high speed data line. ECM, TCM, and many other modules talk on it. Wiring issue (corrosion, terminal fretting, pinched or broken wire) or a failed module or failing module (ECM, TCM, aux chassis controller).

On the PCM side, blue PCM connector, pin 18, solid gray color (no stripe) wire circuit 435. That is the EGR low circuit which an issue on that line (be it the wiring, the PCM or the EGR valve or system performance) will trigger P0401 when it tests that code. There is also a VERY old TSB that states to make sure you clear the DTCs ANY time the PCM is unplugged, reprogrammed, or if the EGR valve is unplugged or replaced as the PCM has an auto zero function in the PCM for the EGR pintle data 61-65-59: SMU - SECTION 6E - ENGINE CONTROLS - CLEAR DTC'S - (Nov 25, 1996) "CLEAR ANY DTCS FROM THE VCM ANYTIME AFTER DOING VCM REPLACEMENT/ PROGRAMMING, TURNING THE IGNITION ON WHILE THE EGR VALVE IS DISCONNECTED, OR REPLACING THE EGR VALVE." Some diagnostic aid notes in the GM diag on P0401 for a 1995 S10 Blazer: Diagnostic Aids Notice: In order to prevent further damage if the EGR valve shows signs of excessive heat, check the exhaust system for blockage (possibly a plugged converter) using the procedure found on the restricted exhaust system check. If the exhaust system is restricted, repair the cause; one of which might be an injector which is open due to one of the following reasons: Stuck Grounded driver circuit Check the oil for possible fuel contamination if a stuck open fuel injector is found. Poor connection or damaged harness - Inspect VCM harness connectors for the following conditions: Backed out terminal BL 18 Improper mating Broken locks Improperly formed or damaged terminal Poor terminal to wire connection Damaged harness Intermittent test - If connections and harness check OK, monitor a digital voltmeter connected between terminal BL 18 and ground while moving related connectors and wiring harness. If the failure is induced, the voltage reading will change.

Counterpoint. There is no used EV trucks on the market sub $30,000 with low mileage or no mileage. Cheapest F150 Lightning I can find is $30,500 and its got 66,000mi. Next cheapest was $33,000 and had 81,000mi. So going on 5 years old, and that leaves only 2-3 years left of battery warranty, or 20,000-40,000mi left of that time. Maverick has the hybrid but its still ICE, and Colorado/Canyon/Frontier/Tacoma/Ranger are all ICE. If someone was set on an EV, they wouldn't cross shop.

Have you spilt anything on the console during ownership? Water, coffee, soda, juice, etc.? GM has been seeing contaminated console shift controls causing all sorts of issues. Requires replacing the shift control.

It was never mandated. Ever. Automakers were incentivized to install it by getting CAFE credits to help with their vehicle fleet fuel economy scores. They were being handed money/CAFE credits to install it. Which is NOT a mandate. The current admin removed the incentives that were behind them installing it.

You do realize that auto stop/start...was never mandated by the fed...right? EPA Says It's 'Killing' Stop-Start, and Here's What Automakers Have to Say "Start‑stop technology has never been federally mandated, and the EPA’s recent action removes regulatory incentives associated with it rather than prohibiting its use."

No ETA is available for that engine at the moment in the GM system. I would start at the dealer. Try and talk to the parts manager or service manager and see if they can start a CX Connect case and get an ETA from GM on when engines may be available. If they just check Parts Workbench and say "no eta", they aren't trying hard enough. They need to do a CX Connect and chat with DPAC to find the ETA.

Good to hear!

We (and Claude) NEED all the codes to help steer this. If the service manager won't budge and give you a detailed diagnostics with all DTCs, we and Claude are sitting duck. If the SM won't budge, call GM customer service and get them to provide you that info from the dealer.

Talk to the service manager. Have him give you a copy of the back of the repair order with the diagnostics and all and any DTCs found.

"Increase"? You want to "increase" your turning radius? What is your truck? What kind of cab and bed do you have currently? Is it stock? Modified? Lifted?

OP's quote is parts and labor. Not just parts. The # you found isn't the right one. But besides that, the right # is the same price within a couple bucks. $5802.01. Now, factor in labor and fluids. Book time is 17.1 hours for a Colorado 8 speed. At $200/hr for a dealer average rate, its $3420 just in labor. We are already at $9222. Fluid and other necessary items, there's your $400-500 more. Also. Your "discounted" transmission. Which is 99% likely quoted off of GM Parts Direct as that's the MSRP I found on their site. You failed to note the $597 in shipping charges. So we are right back almost to MSRP. $5794. Oh. AND, you better have the $4000 for the core charge which you'd have to pay and get refunded, AND you gotta pay to SHIP THE CORE BACK. So now you'd have paid MORE to buy that one online yourself, just for the transmission, even after you get your core refunded.

HD at the moment, are kinda their own deal. How LTZ sells on those vs on 1500, there is a difference. They are merging most of the mid trims on 1500. LT, RST and LTZ are replaced by one trim, Silverado. LT and RST are a BIG portion of sales. Bad naming choice aside, the new Silverado trim will offer the spread of options that those three trims offered. So expect to see things like the tech package for example, and memory seats. And LT Trail Boss will now just be "Trail Boss" (formerly LT Trail Boss) but will offer content spread like the new Silverado trim will. The press photos showed the Trail Boss (formerly LT Trail Boss) has access to Super Cruise now, which on the current truck was High Country only. Here is the Trail Boss interior. Memory seats and Super Cruise are present. All things the LT Trail Boss it replaces, and the RST it was based on didn't get on the current gen. You had to go to LTZ or ZR2 for memory seats, and High Country for Super Cruise.

Any grease on the stud threads of any kind? Wheel studs should have NOTHING on them for proper torquing and so the nuts don't back off. Are all of the mating surfaces clean? So wheel, rotor and hub? We've had plenty of trucks at work with that wheel, this is a first to me. Makes me think they've got a lube tech putting anti-seize on all the wheel studs or some kind of grease, and they need to stop doing that. To have 11 other trucks with the same exact problem.

Ya know...you just need a VIN from a truck that has what you are trying to do... cars.com, autotrader, etc. Find an LT Trail Boss or LTZ, copy the VIN and finding the parts will be much easier.

LT with the Trail Boss package gets them as well.

Oh yea, cost cutting for sure but its driven by market shift. Less and less people want chrome, and chroming costs more than painting. There are coatings that work with unpainted plastics. Adam's Graphene works.

Follows the motif on the Sierra EV. Satin finsh to the lower bumper area, painted above: Elevation Denali

- I like the outside but not as much as the Chevrolet. They ICE'd the EV styling and it works, but I think exterior goes to Chevy on this one. - SLE and SLT dead = Not. Surprising. Fits into the rest of the GMC lineup like this which (aside from Pro) matches the rest of the family. Elevation, AT4, Denali. - Interior. Sophisticated Malaise era. Why do I say Malaise? Drawn with a ruler. Rectangles everywhere. Looks very premium though.

Gen 6 V8 will have AFM and or DFM. The first engine detailed of this is the LS6 which is confirmed to have AFM from the Corvette Museum Bash sessions.