Lights dimming while sitting at light,alt gauge goes way down.

Asked by Feb 04, 2014 at 06:44 PM about the 2006 Chevrolet TrailBlazer LS

Question type: Maintenance & Repair

Lights dim when at red light, gauge goes way down, when I step on gas gauge goes up
and lights ok. Doesn't happen all the Tim. Have new battery and changed alt 3 times. Any
ideas. Thanks

3 Answers

Sounds like bad alternator. If I'm correct that gauge should read 14 volts, roughly.

Found the problem. Noticed the RPMs were down to about 500 and should be a little over 600. These alternators have a saver mode if rpms are too low. Cleaned the throttle body which brought the rpms up to where it should be and have not had a problem since

I have the same problems with my 2006 trailblazer LS lights blinking when I first turn the car on when im just setting still I change the alternator twice and it still doing the same thing and sometimes when I put it n reverse it shout off somebody please tell me what WRONG

Your Answer

TrailBlazer

Looking for a Used TrailBlazer in your area?

CarGurus has 4,285 nationwide TrailBlazer listings starting at $1,500.

ZIP:

Chevrolet TrailBlazer Experts

  • #1
    bigdogracer
    Reputation
    980
  • #2
    Tom Demyan
    Reputation
    900
  • #3
    tennisshoes
    Reputation
    700
View All

Related Models For Sale

Used Chevrolet Tahoe
785 Great Deals out of 41,561 listings starting at $1,987
Used Chevrolet Silverado 1500
2,573 Great Deals out of 173,276 listings starting at $1,000
Used Jeep Grand Cherokee
1,024 Great Deals out of 71,591 listings starting at $1,195
Used Dodge Charger
446 Great Deals out of 32,879 listings starting at $1,999
Used GMC Envoy
46 Great Deals out of 1,994 listings starting at $1,699
Used GMC Sierra 1500
1,148 Great Deals out of 64,234 listings starting at $999
Used Ford Mustang
601 Great Deals out of 38,611 listings starting at $1,895
Used Cadillac Escalade
253 Great Deals out of 11,885 listings starting at $1,200
Used Ford Explorer
1,186 Great Deals out of 68,925 listings starting at $750
Used Chevrolet Impala
571 Great Deals out of 34,341 listings starting at $890
Used Chevrolet TrailBlazer EXT
5 Great Deals out of 1,076 listings starting at $2,690
Used Chevrolet Corvette
164 Great Deals out of 17,423 listings starting at $3,000

Used Cars For Sale

2007 Chevrolet TrailBlazer LS For Sale
5 Great Deals out of 92 listings starting at $2,495

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.