This started as a small annoyance and I finally decided to track it down. After sitting overnight, shifting from Park to Drive can take a second or two before the vehicle actually engages. Once warm…
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 drives normally. Has anyone chased some…
Automakers keep moving basic controls between touchscreens and physical buttons depending on the generation. What controls do you absolutely want to remain physical? I'd rather test this logically th…
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 car, what treatment slows it down withou…
2020 GMC Yukon Denali, about 60,000 miles. The car stays dry in normal rain but after a long storm one front footwell gets damp. Door seal looks okay. What drain/seam tests would you do before tearin…
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, annoyances and whether I would buy the…
2020 GMC Yukon Denali, about 104,000 miles. The manual treats the fluid as lifetime under normal conditions, but the vehicle is getting older and I plan to keep it. What are owners doing in practice,…
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. Before condemning the catalytic convert…
This started as a small annoyance and I finally decided to track it down. Twice I have had full lights and accessories but no crank. After waiting a few minutes it starts normally. Battery terminals…
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 leave for a family towing setup? Apprec…
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 selection, added cooling, or simply less trail…
2020 GMC Yukon Denali, about 78,000 miles. 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…
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 torque-converter behavior, engine misfi…
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 started normally. Battery connections lo…
2020 GMC Yukon Denali, about 29,500 miles. There is a single clunk when changing direction at low speed, especially reverse to drive. No vibration while cruising. What would you inspect first: mounts…
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 is now higher than before. What is the c…
Shocks were replaced and there are no obvious loose parts, but the rear still feels vague over highway undulations. What alignment, bushing, tire or installation issues could mimic worn dampers? I am…
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 actually worth paying for versus a reput…
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 parasitic-draw test on a modern car that takes…
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, condition and a PPI before deciding what…
