Chevy Trailblazer Issue

Asked by Mar 11, 2016 at 08:23 PM about the 2003 Chevrolet TrailBlazer LT 4WD

Question type: Maintenance & Repair

Hi.. I have a 2003 Chevy Trailblazer LT and my rpm
is going crazy whenever I turn on the heat whether
it's full blast or just on setting 1. When it's not on it
doesn't do it. I just had my throttle body replaced
because the one I had on it was no good and I got it
from Chuck and Eddies. Any reason why it would
be doing that?

2 Answers

68,895

There is a ground wire not hooked up or bad,more than likely at heater switch,or dash board,should have nothing to do with throttle body replacement unless your engine is reving up and down all so.

The rpm actually only goes crazy when the defroster is on, just discovered this morning.

Your Answer

Chevrolet TrailBlazer Experts

  • #1
    bigdogracer
    Reputation
    910
  • #2
    Tom Demyan
    Reputation
    890
  • #3
    tennisshoes
    Reputation
    700
View All

Related Models For Sale

Used Chevrolet Tahoe
707 Great Deals out of 41,339 listings starting at $1,995
Used Jeep Grand Cherokee
842 Great Deals out of 69,994 listings starting at $700
Used GMC Envoy
53 Great Deals out of 2,155 listings starting at $1,700
Used Chevrolet Silverado 1500
2,240 Great Deals out of 167,963 listings starting at $1,000
Used Ford Explorer
886 Great Deals out of 67,382 listings starting at $1,800
Used Chevrolet Impala
555 Great Deals out of 35,105 listings starting at $900
Used Chevrolet TrailBlazer EXT
9 Great Deals out of 1,036 listings starting at $2,000
Used Chevrolet Camaro
408 Great Deals out of 30,592 listings starting at $2,495
Used Dodge Durango
249 Great Deals out of 22,394 listings starting at $895
Used GMC Yukon
437 Great Deals out of 22,356 listings starting at $1,995
Used Ford F-150
2,520 Great Deals out of 193,861 listings starting at $799

Used Cars For Sale

2007 Chevrolet TrailBlazer LT 4WD For Sale
11 Great Deals out of 159 listings starting at $2,800
2006 Chevrolet TrailBlazer LT 4WD For Sale
3 Great Deals out of 143 listings starting at $1,300
2005 Chevrolet TrailBlazer LT 4WD For Sale
4 Great Deals out of 136 listings starting at $1,995

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.