2007 Chevy 1500 4.8L stalls when taking off and stabletrack lives come on then goes to power reduction mode. What's wrong

change rubberbands!

Loss of power, but no mention of rough or inability to idle (including stalling). If those additional symptoms are part of the problem, check for a vacuum leak to the intake. Listen for hissing or sucking noises near air hoses. Look for loose, cracked, or broken air hose connections. Check PCV valve...Cheap to replace, could be sticking, then loosen after truck sitting with engine off. A vacuum leak will not give any light indications, and vehicle will seem to run normal when applying gas, but will want to stall or run rough (or want to stall) when at idle or sometimes when taking foot off gas when slowing down.

What engine does it have ? Could have come with three different one's . 2.0 - 2.2 - 2.4 L . That really doesn't matter i guess , all three have electronic throttle control . Do you have a check engine light lit on the instrument cluster ? Any messages on the DIC - reduced engine power ? Your best bet ,take it to a qualified repair shop.

Your Tahoe goes into "Power Reduction Mode" to keep you from continuing to operate the vehicle with an OBVIOUS problem and destroying high-dollar parts like catalytic converters, cylinder heads, etc.. Yeah, the old days of simply ignoring Check Engine lights are over.... The manufacturers have made it so the engine will go into reduced power mode and FORCE you into properly maintaining your vehicle.

(Not saying that you don't maintain your vehicle...Just pointing out that you can thank all of those people that continuously run around with warning lights SCREAMING all over their dash for the wonderful little "Reduced Power Mode" feature.)

As for what could be actually causing thie problem? Well, just let me say that the last time I counted, there were over 600 "generic" OBD fault codes available for most cars (80% of which will turn the Check Engine light on long before reduced power mode takes place), and several hundred more "vehicle specific" fault codes that have not yet made the generic code list.

So, to put it simply, you will have to scan your computer network and gather all the fault codes and perform fault code diagnostics to determine the actual cause of your problem.

Hi
I would suggest this fsult is tested using correct diagnostic computer because guesding could cost a fortune in wrong parts. Also, just because 1 car has a similar fault does not mean yours will be the same.
You could have an ecu issue, wiring connector faults etc etc.
Get it cgecked by a pro.
Roger

This mornnig when i tray to start my trailblazer 2006 LT sudnly eletiric power cuted and there is now light,now engen start ,the key can not poled out please rocomand me

turn 4x4 switch off put vehicle in neutral then put vehicle in reverse and drive in reverse a couple of feet the put it into drive and it should come off of 4x4 if not then repeat until it comes off

there is a electronic switch on the trans. that u need to have replaced if u dont it will start switching in and out and destroy the transfer case and trany

same problem

It sounds like there is something very major wrong with your ride. I think it would have something wrong with the fuse box or computer system.