2023 GMC Sierra 1500 — surface rust underneath a winter daily
2023 GMC Sierra 1500 AT4, about 67,000 miles. There is early surface rust on brackets, fasteners and seams underneath, but nothing structural. For a salt-belt…
2 owner reports for this model.
GMC Sierra 1500
2023 GMC Sierra 1500 AT4 — physical buttons are disappearing again — good or bad?
Automakers keep moving basic controls between touchscreens and physical buttons depending on the generation. What controls do you absolutely want to remain phy…
2023 GMC Sierra 1500 AT4 — intermittent metallic rattle after cold start
For the first few seconds after a cold start I hear a metallic rattle, then it disappears and won't come back once the engine is warm. No warning lights and it…
2023 GMC Sierra 1500 — 50,000-mile ownership report: what actually broke? — anyone dealt with this recently?
2023 GMC Sierra 1500 AT4, about 28,000 miles. I just crossed 50k miles and want to log maintenance, unscheduled repairs, tire life, fuel economy, dealer visits…
2023 GMC Sierra 1500 — catalyst efficiency code but car drives normally
2023 GMC Sierra 1500 AT4, about 39,500 miles. A catalyst efficiency code came back after clearing once. The car drives normally and there are no misfire codes.…
Question: Payload sticker changed my whole truck-shopping plan
I was focused on tow rating until I started adding passengers, gear and tongue weight. Now payload looks like the real limit. How much buffer do you personally…
FlatSixEnthusiast5Community StarterAug 21, 20262023 GMC Sierra 1500 AT4South Florida3 replies0 helpful
Transmission temperature climbs on long grades
Normal temperatures around town, but towing uphill for 20–30 minutes pushes trans temp much higher. How do you decide whether the solution is speed/gear select…
QuattroNerdCommunity StarterAug 21, 20262023 GMC Sierra 1500 AT4Denver / Front Range5 replies0 helpful
Need advice: Shudder at light throttle around 40 mph
I get a light shudder at steady throttle around 35–45 mph. If I accelerate harder or lift off, it goes away. Trying to figure out whether this sounds more like…
TireDriverCommunity StarterJul 14, 20262023 GMC Sierra 1500 AT4Boston / New England0 replies0 helpful
Anyone else: No crank, lights work, then it suddenly starts
2023 GMC Sierra 1500 AT4, about 151,000 miles. Twice this month I turned the key/button and got lights but no crank. After trying again a few minutes later it…
2023 GMC Sierra 1500 — dealer lowered price but added accessories back in
2023 GMC Sierra 1500 AT4, about 38,500 miles. We agreed on a vehicle price, then the worksheet included dealer-installed products I did not ask for. The total…
2023 GMC Sierra 1500 — open carrier or enclosed for a normal enthusiast car?
2023 GMC Sierra 1500 AT4, about 66,000 miles. The car is valuable to me but not exotic. Enclosed transport costs noticeably more. When is the extra protection…
2023 GMC Sierra 1500 — battery dies after the car sits for a weekend
Battery passes a quick test and charging voltage looks normal, but after two or three days parked the car sometimes will not crank. What is the cleanest parasi…
LongMilesDriver187Community StarterAug 9, 20262023 GMC Sierra 1500 AT4Salt Lake City0 replies0 helpful
2023 GMC Sierra 1500 — is this actually a good used-car deal?
The online price looks competitive, but I am trying to judge the entire deal rather than the headline number. What should I compare besides mileage, history, c…
Would you pay more for documentation than lower mileage?
Comparing two older enthusiast cars: one has lower mileage but thin history, the other has higher mileage with years of invoices and owner notes. Assuming both…
A/C is cold while driving, warm at stoplights
A/C gets properly cold on the highway but becomes noticeably warmer at long lights. It cools down again almost immediately once the car is moving. Could this s…
CityRunner96Community StarterAug 1, 20262023 GMC Sierra 1500 AT4Denver / Front Range0 replies0 helpful
2023 GMC Sierra 1500 AT4 — trailer feels nervous in crosswinds
2023 GMC Sierra 1500 AT4, about 78,000 miles. Truck is within published ratings, but with a tall enclosed trailer it gets pushed around in wind more than I exp…
Question: DEF warning came back shortly after refill
2023 GMC Sierra 1500 AT4, about 37,000 miles. Filled the DEF tank but warning returned sooner than expected. Before blaming the sensor, can old/contaminated fl…
2023 GMC Sierra 1500 AT4 — question: Inside shoulder wearing much faster than rest of tire
2023 GMC Sierra 1500 AT4, about 4,800 miles. Front tires look fine from the outside but the inner shoulders are nearly done. Car is lowered a little. I'd rathe…
Question: Recall shows for my model but not my VIN
2023 GMC Sierra 1500 AT4, about 48,000 miles. I saw a recall announcement that includes my model year, but my VIN currently shows no open recall. Is that usual…
2023 GMC Sierra 1500 AT4 — pPF has a small chip — leave it or replace panel?
2023 GMC Sierra 1500 AT4, about 62,000 miles. Front PPF did its job but now has a small nick that catches the light. Paint underneath appears fine. Is spot rep…