i have two issues when it park it makes a bubbling like noise and a squeeking noise now when im driving its kind of rought and makes a race car noise like im trying to go fast but cant really pick up,

15

Asked by Aug 24, 2013 at 10:09 AM about the 2002 Chevrolet TrailBlazer LS 4WD

Question type: Maintenance & Repair

8 Answers

check your coolant for the presence of motor oil...check the motor oil for the presence of coolant...thinkin' the worst case scenario....has the engine overheated?...look at the underside of the hood for a prior overheat...as this sounds kinda cooked...bet the coolant is low...bet the thermostat will not move easily....bet the waterpump is on the ragged edge and dripping out the weep hole...you should examine the engine's systems...the component belt has a tensioner....when the idler wears out will cause the flat belt to shimmy to one side and the idler will start grinding~

3 of 3 people found this helpful.
15

no over heating that i know of it has coolant i dont know anything of cars. so maybe it can be the thermostant that causes these issues? or the belt cuz my main issue now is when im driving its kind of rough and sounds like a race car going faST do you know what i mean??

1 of 1 people found this helpful.

Pablo Sandoval....the 'panda'...no relation. Take it to a mechanic you trust...Can price out a tensioner and belt....not CEL trouble codes...at all...no christmas style flashing red light? we should connect a diagnostic scanner to see if we need a new O2 sensor, if the air/fuel ratios are correct...combustion is normal~

tensioner~

1 of 1 people found this helpful.

serpentine belt~

1 of 1 people found this helpful.

the defective t-stat might be the source of your boilin'~

10,375

Where is the bubbling coming from. Get it hot again and check under the SUV, the transmission might be NFG. Listen don't touch the pan. Racing around!! Sounds like your tranny could be slipping and the fluid boiling. That is not good, if it is the tranny you will start losing gears soon if not already. You should have the 4.3L motor which comes with the 4L60e. These have issues and I happen to have the older version of that tranny (700r4) doin the same thing but I have lost every gear but 1st. Takes about 5 miles and the fluid boils. If it is the tranny replace/rebuild soon before it gets worse.

2 of 2 people found this helpful.
30

From your description, I'd say either a Fan clutch, Waterpump or a Belt/Tensioner problem! Is the bubbling noise coming from the coolant reservoir or elsewhere? Does it seem like the racing noise is coming from the fan shroud or lower and farther back in the engine compartment? Also, do these sounds appear when the vehicle is standing at an idle, or only when it is actually moving? These things will all help to narrow down your problem!!! Or you could take it to a trusted mechanic!

2 of 2 people found this helpful.

Your Answer

Add photo

Related Questions

TrailBlazer

Looking for a Used TrailBlazer in your area?

CarGurus has 4,695 nationwide TrailBlazer listings starting at $999.

ZIP:

Search Chevrolet TrailBlazer Questions

Chevrolet TrailBlazer Experts

#1 Tom Demyan
Tom Demyan
Reputation 840
#2 bigdogracer
bigdogracer
Reputation 830
#3 dandyoun
dandyoun
Reputation 630
View All

Related Models For Sale

Used Chevrolet Tahoe
598 Great Deals out of 32,881 listings starting at $1,500
Used Jeep Grand Cherokee
1,069 Great Deals out of 73,682 listings starting at $1,200
Used GMC Envoy
58 Great Deals out of 2,215 listings starting at $2,200
Used Chevrolet Silverado 1500
1,916 Great Deals out of 183,083 listings starting at $1,495
Used Ford Explorer
900 Great Deals out of 65,303 listings starting at $799
Used Chevrolet TrailBlazer EXT
15 Great Deals out of 1,014 listings starting at $1,500
Used Dodge Durango
278 Great Deals out of 21,229 listings starting at $1,500
Used Chevrolet Camaro
347 Great Deals out of 31,370 listings starting at $2,500
Used Chevrolet Impala
614 Great Deals out of 35,546 listings starting at $899
Used Chevrolet Blazer
1,184 listings starting at $1,495
Used GMC Yukon
424 Great Deals out of 20,393 listings starting at $1,495
Used Ford F-150
2,169 Great Deals out of 195,112 listings starting at $290

Used Cars For Sale

2007 Chevrolet TrailBlazer LS 4WD For Sale
6 Great Deals out of 209 listings starting at $2,500

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.