My 2003 Chevy Tahoe idles very low. When driving at low speeds when not pushing on the excelarator the tahoe will die. It will even die sometimes when the vehicle is in reverse. it does when making turns also. Sometimes it also dies when the vehicle is idiling and the steering wheel is turned.

SOURCE: 2004 Chevy Tahoe stereo wiring diagram

BLACK-ground
RED-accessorie
YELLOW-power 12v
PURPLE-left rear
GREEN-right rear
WHITE-left front
GREY-right front
BLUE-REMOTE
and the other blue one is for remote antenna..

SOURCE: 2003 Chevy suburban engine dies while driving

the reason your truck is shutting off is because one of your o2 censors is bad. had the same problem even got a diagnostic done ans showed no error.finally went to advance auto and asked someone who had the same problem. hope is works out

SOURCE: 2005 chevy tahoe dies

you might have the alternator checked or simply replace it.. i would also replace the battery if its more than 2 years old

SOURCE: Chevy tahoe shuts off when driving

i am on here because of an issue i am currently having with a 2004 tahoe, but after reading some the other problems people are having i will let you in on a previous experience i had with a 2002 chevy truck. my previous vehicle was a 02 chevy 2500hd with the 8.1 and the problem started on day when suddenly it shut off. it did restart with no problem. i never had that problem again until a month later and 1500 miles away when i went to texas to visit my sister. this time it took nearly 30 mins before it would restart. it would crank over fine but no fire. then suddenly out of no where it would fire up like nothing ever happened. so anyways to make a long story short i visited two different gm service centers, they did tune ups and diagnostics, and handed me the bills for over 500 dollars and told me that should do it. yea right the problem continued and then i searched online and one item that kept coming up was the crank position sensor. after reading what those people were dealing with i gave it a shot. went to the dealer bought a new sensor ($99) took an hour to install it and i never had the problem again. one last thing im gonna add. i had a friend that drove a late 90s or early 2000s grad prix, she was having the same problem and had her car in and out of the shop and never got it resolved, i told her to have them check the crank position sensor and bingo, she never had the problem again.

SOURCE: 2003 chevy tahoe front rear end fluid

i think what you are talking about is the front differential. you will wanna put gear oil in it. the correct weight would be found in your manual.