Top 10 2003 Chevrolet Tahoe Questions & Answers

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.

have to make sure the starter is getting power. make sure the engine will turn over by putting a socket and ratchet on the crank bolt and turn it to the right. the two wires to the starter is battery the big one and the little one is for the ignition. ground test light check big wire, then have a friend key it up to check the little wire.

I would change the fuel pressure regulator first, if no change in pressure the fuel pump is on the way out.I have a 01 silverado 4.8 and my fuel pressure is between 55and60 psi.

The dash cluster is know for two different problems.

If individual gauges bounced erratically and then quit, the little stepper motors that run them are bad. Upgrades are available from eBay, but you need PC soldering experience to change them out. An internet search will show allot of people who will rebuild the cluster for you.

If the entire cluster died all at once, the most common issue is bad solder joints near where the plug attaches to the board. This is an easier fix than the stepper motors, but still you need to be handy with a soldering iron!

IN THE SMALLER OF TWO LINES GOING TO EVAPORATOR FROM THE FRONT CONDENSER THIS IS CALLED THE LIQUID LINE

I think your problem is the head unit that selects where the air comes out ie. Face, floor, defrost, or hi-level face and floor. If that's not working then it will not let you switch location that you want the air to come out.

Your problem could be in the Transmission, but most likely it is caused by a sensor / electric part called an Accellerator-Pedal-Position-Sensor (APP-Sensor. If it is the APP Sensor, then you should be getting a signal in the information center saying "reduced power" or a Check-Engine Light.

How old is the battery...???' Had the same problem with my '89 Cherokee, and it was a faulty battery...Was making some kind of internal shortcut, and didn't accept charge...
Cheers.

The second row is folded by first pulling up the rear of the seat cushion and folding up 'til it's behind the back of the front seat. Then the back of the seat folds down where the seat cushion was.

The third row seats have several levers that are numbered in the sequence they are to be operated. First fold the seat back down on to the cushion and then flip the whole seat up 'til it's vertical and latched.

This is described in the Owner's manual if you can find one.

Brent, Check and clean connections(use electronic contact cleaner), make sure wires are not damaged. Check grounds from EBCM controller. Check links below and don't be afraid to google search for more info.
C 0222 Missing Right Front Speed Signal
C 0226 Missing Left Front Speed Signal
- Faulty Right/Left Front Speed Sensor
- Right/ Left Front Speed Sensor harness is open or shorted
- Right/ Left Front Speed Sensor circuit poor electrical connection
- Faulty EBCM

C 0237 Erratic rear speed signal
- Faulty Rear Speed Sensor
- Rear Speed Sensor harness is open or shorted
- Rear Speed Sensor circuit poor electrical connection
- Faulty EBCM


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