I have '03 Tahoe it idles fine but shuts off in gear

Asked by Feb 10, 2016 at 05:07 PM about the 2003 Chevrolet Tahoe LT 4WD

Question type: Maintenance & Repair

Just changed alternator after car shut off on me
while driving and DIC said battery not charging.
After replacing alternator car will not load CD or
stay running after depressing brake pedal. I'm going
to change pcv valve but do you have any ideas?
Help!!!

6 Answers

87,055

Did you disconnect the battery when replacing the alternator? If so then you will have to take it to a dealer and have it reflashed due to loss of voltage. There is a little tool that is used when disconnecting the battery that maintains all of the vehicles factory presets and owners settings. I don't know if that information is in your owners manual, but I did find it in mine for a 05 Yukon. You can try starting it in neutral and see if it will drive to the dealer, if it does then the performance will be low.

I just changed mass air flow sensor. No help there either. I do have a manual, but I don't know where reset button is. I checked everywhere for vacuum leaks. Found 0. This truck only shuts off when warm and you apply the brake. Oh and while changing alternator the battery was disconnected. Please help. Don't want send to a garage and get charged a zillion dollars that I don't have. Truck was running fine , except recent antifreeze leak that's not present on the ground. New battery new alternator new mass air flow sensor new serpentine belt.

87,055

There is no reset button. Try pinching off the brake booster vacuum line and then try it, if it doesn't die then check the little check valve where the booster vacuum supply line is connected it could be flowing continuously. Do you hear any vacuum leaks inside the vehicle like down around where the steering shaft goes through the bulkhead?

@tennisshoes. Try that no good. However when stepping on pedal in park it paused and then sounded like a vacuum leak. Gonna try changing intake hose don't see any leaks but when I pressed gas pedal in park a buddy told me that where sound came from.

@tennisshoes. Do you think it could be the throttle body? I went through every gear w/o truck moving and it finally shut off. Before I would drive it and after warmed up it would shut off while pressing brake. Today I shifted into each gear with out moving a @ each shift idle went down until eventually shutting off. Actually question posed to anyone.

87,055

It is possible, have you cleaned it real good? Also check the connections at the TPS. If you have an ohm meter you may want to test the TPS and make sure there aren't any dead or static zones in the sweep. Just a thought.

Your Answer

Add photo

Related Questions

  • 1998 Chevy Tahoe 4x4. 4 answers

    I drive a 1998 Chevy Tahoe 4x4. Recently, I was driving down the highway and my spedometer began to fluctuate greatly, then the vehicle started surging and lagging when I tried to get up to speed. The...

    1998 Chevrolet Tahoe

    -

    Maintenance & Repair

  • Tahoe wont go over 25mph 10 answers

    My 03 chevy tahoe 4x4 wont go past 25mph have changed the transmission already and still wont go over 25mph any suggestions

    2003 Chevrolet Tahoe Z71 4WD

    -

    Maintenance & Repair

  • My driver seat of my 03 Z71 Tahoe is all the way forward and won't go back. How do I fix this since the motor seems to have locked up? 4 answers

    2003 Chevrolet Tahoe LT 4WD

    -

    Maintenance & Repair

  • Vortec 5.3 knock 2 answers

    I've got a 2002 Tahoe lt. last week I had a head gasket go bad, had it towed to a shop and we replaced them. Flushed the oil 3-4 times, filled it up and started just fine. When I drove it home, I ...

    2002 Chevrolet Tahoe LT 4WD

    -

    Maintenance & Repair

  • Changed starter now tahoe wont work the same any ideas 2 answers

    I changed my starter now I have a issue tahoe is not running the same. I have to push pedal all the way down for gears to catch. When I turn it on tahoe shakes like it wants to turn off lights dim...

    2002 Chevrolet Tahoe LS

    -

    General

Tahoe

Looking for a Used Tahoe in your area?

CarGurus has 28,432 nationwide Tahoe listings starting at $1,500.

ZIP:

Search Chevrolet Tahoe Questions

Chevrolet Tahoe Experts

#1 FordNut
FordNut
Reputation 810
#2 Tom Demyan
Tom Demyan
Reputation 720
#3 Rowefast
Rowefast
Reputation 650
View All

Related Models For Sale

Used GMC Yukon
519 Great Deals out of 17,127 listings starting at $1,799
Used Chevrolet Suburban
462 Great Deals out of 18,781 listings starting at $1,399
Used Cadillac Escalade
308 Great Deals out of 10,692 listings starting at $1,900
Used Chevrolet Silverado 1500
2,284 Great Deals out of 155,168 listings starting at $1,395
Used Ford Expedition
418 Great Deals out of 24,741 listings starting at $1,999
Used Ford Explorer
936 Great Deals out of 73,994 listings starting at $750
Used Ford F-150
2,700 Great Deals out of 212,349 listings starting at $1,000
Used Dodge Durango
299 Great Deals out of 24,117 listings starting at $1,500
Used Toyota 4Runner
316 Great Deals out of 20,547 listings starting at $2,295
Used Jeep Grand Cherokee
843 Great Deals out of 68,676 listings starting at $864
Used GMC Yukon XL
359 Great Deals out of 12,480 listings starting at $1,995
Used GMC Sierra 1500
938 Great Deals out of 62,274 listings starting at $1,395

Used Cars For Sale

2017 Chevrolet Tahoe LT 4WD For Sale
2,269 listings starting at $45,791
2016 Chevrolet Tahoe LT 4WD For Sale
26 Great Deals out of 969 listings starting at $36,995
2015 Chevrolet Tahoe LT 4WD For Sale
17 Great Deals out of 686 listings starting at $32,450
2014 Chevrolet Tahoe LT 4WD For Sale
18 Great Deals out of 228 listings starting at $16,995
2013 Chevrolet Tahoe LT 4WD For Sale
19 Great Deals out of 578 listings starting at $14,000