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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 General Tech Q&A > General

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Old 01-03-2013, 04:41 AM
Junior Member
2002 Chevy TrailBlazer LS
Light Pewter Metallic 4.2L I6 4X4
Join Date: Feb 2009
Location: ALBANY, NY
Posts: 93
I bought my 2002 trailblazer used in 2008 and it had about 80k on it when I bought it. it is my everyday vehicle and I drive it pretty hard. I have 137k miles on it now and i'm having my first major issue with it. I was using my 4hi and it started grinding while I was driving and had an awful smell filling the car so I pulled over and put it back into 2wd and both the grinding noise and smell went away. other than this issue my only other problems I've had were:
1 replaced both front tie rods
2 replaced all 6 spark plugs
3 replaced 2 ignition coil packs
4 replaced all 4 rotors & brakes
5 replaced rear outer wheel seals
6 replaced rear outer sway bar links
7 replaced tail light cuz I backed into a metal railing and broke it.
8 right rear door handle broke
9 passenger side window motor runs slow
10 replaced blower resistor pack
11 replaced front and rear shocks
12 air filter
13 serpentine belt
that's all I can think of at the moment. I did all my repairs myself. almost everything is just normal car maintenance.
Just because you're mechanically inclined, doesn't make you a mechanic...get a second opinion!
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Old 01-03-2013, 04:47 AM
Junior Member
2002 Chevy TrailBlazer LS
Light Pewter Metallic 4.2L I6 4X4
Join Date: Feb 2009
Location: ALBANY, NY
Posts: 93
I think you made the right choice. I love my trailblazer and i'm looking to buy another one for the wife.
Originally Posted by PatMM View Post
Bought my 07 TB about a month ago with 33k on the clock. I had it inspected by the local chevy dealer and they gave it a clean bill of health. No leaks and everything looked good. I had em change the coolant and put new brake fluid in it. Everything works on the vehicle but after reading this thread I'm almost afraid to drive it.

I still have a GMPP bumper to bumper warranty good until 48K or October 2013. Guess I better drive it while the warranty is good. I wonder if I can extend the warranty?

I'm hoping I didn't make a mistake!
Just because you're mechanically inclined, doesn't make you a mechanic...get a second opinion!
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Old 04-24-2014, 02:20 PM
chach5253 chach5253 is offline
Junior Member
2002 Chevy TrailBlazer LS
Indigo Blue Metallic 4.2L I6 4X4
Join Date: Sep 2011
Location: Richmond, MI
Posts: 16
Originally Posted by Black_Ops View Post
Being that i bought my first TB this past saturday, I was curious as to what problems you all have run into with this vehicle. I did look at and wow...I really am starting to worry that I have made the wrong choice. Either way, the vehicle is still at low miles (46K) and is under 2 yr 24K mile warranty. But, I am just curious. Any help or suggestion is greatly appreciated.
Wife and I bought our 2002 TB at the end of 2004 with only 24,000mi. There was a recall on the brake light bulbs when we purchased it, so they replaced them. I think I've replaced them about half a dozen times since. First of the major issues was the remote key fobs quit working, then the rear wiper slowly stopped working on all speeds, followed by the rear defroster and finally the license plate bulbs. Every time I talked to the dealer, they said it was probably the liftgate module ($400) and for me to bring it in. I could see the dollar signs spinning in their eyes, so, I just did without, until the license plate bulbs quit working. To make a long story short, 4 of the 5 wires to the liftgate were broken. After soldering them, EVERYTHING started working again. I dodged the $400+ labor bullet, that time.

Occasionally the "service 4whl drive light would come on, then go out. Then it would go into 4whl drive without the selector being moved from 2whl drive, then back again. Best gas mileage was 14-15mpg. At around 80,000 miles, the trans went! They rebuilt the trans, put in a new pump in the transfer case and a new computer module, complete with having it programmed at a Chevy dealer, at the cost of close to $2,000. Gas mileage jumped up to 17mpg City and even got 21mpg on a trip, after getting the trans fixed. It would go into 4whl drive by itself, but not as often, so we just kept driving it. After about 50-60,000 miles, I took it to another trans shop, closer to home. He said it needed another computer module. Cost: $600!!! Worked great til this past winter. Put itself into &()_** 4whl drive high and wouldn't come out. Next morning, I started it and it was in 4whl LOW!!!!!. I disconnected the batter and reset the computer. When I started it after that, it was back in 2whl drive. Went to the dealer and purchased something I should have replaced when it first started acting up....THE SELECTOR SWITCH!! (Parts guy said they sell alot of them!!!!! Hmmm, kinda like the ignitions switch they are recalling??????)

After going up north to visit relatives, the clutch fan went. It sounded like a SUPER TURBO DIESEL on the trip back. Cost:$200 and I replaced it, myself!!

Last problem that I can recall is the left front wheel bearing. Steering wheel felt like it had a tuning fork against it. I would come and go, until it got to the point there it was vibrating all the time. I also had the shocks, struts and new tires put on the vehicle at that time, as well. After it was replaced, it was smooth as silk It now has 170,000 miles and I think I've fixed all the goblins and gremlins in this rolling abortion, but the wife is STILL happy and I'm relieved!!! Good Luck with yours,
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Old 02-26-2015, 03:12 PM
ViewOfAKind ViewOfAKind is offline
Junior Member
2002 Chevy TrailBlazer LS
Sandalwood Metallic 4.2L I6 4X4
Join Date: Feb 2015
Location: Woodstock IL
Posts: 1
New 2002 TB 4.2 awd 2nd owner at 160,000k

before I got it I was able to get some questions answered thru this forum such as tow cap, and rear axle numbers so thanks a lot, this will be my tow vehicle for a 4400lb trailer, I would like to do springs or shocks, but do you do them in any kind of order? trailer brake too,
I smelled oil burning the other day, no drips underneath though, no biggy at 160k but is anything common here on 4.2 awd? lastly which trans is the good/bad one and how do I find out which one I have thanks again
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Old 07-23-2016, 01:00 AM
bowdie1's Avatar
bowdie1 bowdie1 is offline
Junior Member
03 Chevy Trailblazer Chevy TrailBlazer LT EXT
Majestic Red Metallic 4.2L I6 4X4
Join Date: Jun 2005
Location: in a Chevy Tahoe work truck
Posts: 8
No a/c or heat by the rear vents but good blower pressure

The front a/c and heat control switch works fine but I'm still not getting a/c or heat to the rear by the vents.. In the summer it's hot heat blowing out and in the winter it's cool air blowing out. I barely drive it is why it's taking me so long to even try to repair it but with out help I'll hafta pay big dollars to fix it, unless I get DIY help . Any help would be nice for a 2003 Trailblazer EXT LT
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