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  1. #1

    Default my blower contols dont work anymore on Trailblazer :(

    All this year one by one the Heater/AC blower contols 1-5 went out, I'm on my last setting, #5. everything else works fine, I was wondering if there are any auto guys on this board that could help me out. I was thinking maybe a resister, or fuse is bad, or I can buy the part and fix it my self.

    btw it a 2004 Trailblazer LT
    1985 Ford F-150blue/blue interior (dad's) (explorer)sold
    1985 Mustang Lx 2.3 (mine )
    1986 T-bird Silver/grey interior 3.8L (dad's) sold
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    04' Trailblazer LT with (minor performance upgrades) (dad's)
    --------up-comming rides-----------
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  2. #2
    FEP Power Member LTDmasta GT's Avatar
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    good ol GM junk. GM quality suffered tremendously from the mid 90's till recently.

    anyway its your blwer motor resistor that went out. it should be located underneath the pass side dash on the airbox
    hello, my name is Epi and i'm addicted to four-eyes
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  3. #3

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    yep GM junk....we had a lumina that didn't last long, seems like if you want anything to last good from GM, you have to buy the "top of the line" most expensive model..... ok.....thank you.
    1985 Ford F-150blue/blue interior (dad's) (explorer)sold
    1985 Mustang Lx 2.3 (mine )
    1986 T-bird Silver/grey interior 3.8L (dad's) sold
    1991 Lincoln Continental Sig. Series 3.8L (mom's) sold
    04' Trailblazer LT with (minor performance upgrades) (dad's)
    --------up-comming rides-----------
    1991 Ford ranger xlt 4.0 V6 almost mint (little rust)
    New car for the mom ...

  4. #4
    FEP Power Member LTDmasta GT's Avatar
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    Quote Originally Posted by 85Mark2.3Lx View Post
    yep GM junk....we had a lumina that didn't last long, seems like if you want anything to last good from GM, you have to buy the "top of the line" most expensive model..... ok.....thank you.
    thats not even true. the 4L65 transmissions found in the escalade are garbage
    hello, my name is Epi and i'm addicted to four-eyes
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    '90 Mustang LX - cancer
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  5. #5

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    if it only works on high i would say resister.

  6. #6
    FEP Member gt88's Avatar
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    It's called a 'final stage unit' on the BMW's- (I refer to them as German Chevrolets!!)
    Essentially, it's a variable resistor bank, to control fan speed. It should be a plug and play deal.

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  7. #7
    FEP Power Member 82HATCH's Avatar
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    Quote Originally Posted by transrus1 View Post
    if it only works on high i would say resister.

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  8. #8
    FEP Super Member 85 GT Kid's Avatar
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    Quote Originally Posted by LTDmasta GT View Post
    thats not even true. the 4L65 transmissions found in the escalade are garbage
    Was the 65E in a 5.3 or a 6.0 if it was in a 6.0 than thats why. 65Es are a good tranny but when you start beatin on them they fail (specially with a 6.0 out front). You could have gotten a dud also. My dads 1/2 ton GMC had a 60E (slightly diff than a 65E) and we beat the crap out of it for 200K miles and it was just as good as the day we bought it.

    You guys talk about GMs being bad look at the Fords. I've been in quite a few new fords and they sucked.
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  9. #9

    Default

    i'd say its a resister. resisters can go two ways when they go bad up or down and your case it went up. if it went down you would have to replace the fan motor
    Got a problematic mustang, a thunderbird that needs a transmission, a lincoln with failing airbag suspension and a mustang body that needs a drive-train but other then that I'm gooood.

    WARNING: bad english detected

  10. #10

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    Quote Originally Posted by gt88 View Post
    It's called a 'final stage unit' on the BMW's- (I refer to them as German Chevrolets!!)
    Essentially, it's a variable resistor bank, to control fan speed. It should be a plug and play deal.

    Here ya go, and yes, I'm super freakin' awesome!!!

    http://forums.trailvoy.com/showthread.php?t=32751

    Yep, pornographic pictures, and everything!!
    Thank-you for the info, I registered for that site also, never thought of join'n a trailblazer site
    1985 Ford F-150blue/blue interior (dad's) (explorer)sold
    1985 Mustang Lx 2.3 (mine )
    1986 T-bird Silver/grey interior 3.8L (dad's) sold
    1991 Lincoln Continental Sig. Series 3.8L (mom's) sold
    04' Trailblazer LT with (minor performance upgrades) (dad's)
    --------up-comming rides-----------
    1991 Ford ranger xlt 4.0 V6 almost mint (little rust)
    New car for the mom ...

  11. #11
    FEP Power Member LTDmasta GT's Avatar
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    Quote Originally Posted by 85 GT Kid View Post
    Was the 65E in a 5.3 or a 6.0 if it was in a 6.0 than thats why. 65Es are a good tranny but when you start beatin on them they fail (specially with a 6.0 out front). You could have gotten a dud also. My dads 1/2 ton GMC had a 60E (slightly diff than a 65E) and we beat the crap out of it for 200K miles and it was just as good as the day we bought it.

    You guys talk about GMs being bad look at the Fords. I've been in quite a few new fords and they sucked.
    i work at a trans shop, we get more GMs and Chrysler transmissions than anything else. even more Toyotas and Nissans than we get Fords.

    the 4L60 and 4L65s are garbage, the planets always explode in them. sadly to this day they havent dont much to improve on them.

    the numbers speak for themselves regarding Ford. they are still a profitabe company, they still make more sales than any other manufacturer, and their quality is just as good if not better than Toyota.. although i believe part of that is Toyota quality has gone down in recent years. i get alot of out-of-warranty toyotas for electrical and engine issues.
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  12. #12
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    You might as well ad the 4l70 to the list of sucky transmissions.

    I was real impressed with my Trailblazer SS. It was a good vehicle especially considering the crap I threw at it. If GM had put a 4l80or even a 6l90 in that thing it would have made a world of difference.
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    Which back to the OPs issue. This is a common problem with the Trailblazers. Sometimes it is the controles on the dash other times it is the control module behind the dash.
    Ron Gibson

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  14. #14
    FEP Power Member LTDmasta GT's Avatar
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    Quote Originally Posted by psrumors View Post
    You might as well ad the 4l70 to the list of sucky transmissions.

    I was real impressed with my Trailblazer SS. It was a good vehicle especially considering the crap I threw at it. If GM had put a 4l80or even a 6l90 in that thing it would have made a world of difference.
    agreed. we rarely get 4L80s but when they do come in, its usually burnt clutches which is 90% neglect.

    i hate to say it though, those LSx series engines are spectacular, even for being a conventional OHV engine design. if they put the effort into the trans like they did with their engines, GM products would be much more superior.
    hello, my name is Epi and i'm addicted to four-eyes
    '86 Mustang GT convertible - restomod
    '86 Capri - DD hotrod
    '08 Ford Edge - Weekend hauler
    past:
    '86 Mustang GT hatch - sold for diapers
    '87 LTD - gone after 12 long years
    '90 Mustang LX - cancer
    '86 Thunderbird 3.8L
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  15. #15
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    Yeah the LSx series is quite capable

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  16. #16
    FEP Super Member 85 GT Kid's Avatar
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    Quote Originally Posted by psrumors View Post
    You might as well ad the 4l70 to the list of sucky transmissions.

    I was real impressed with my Trailblazer SS. It was a good vehicle especially considering the crap I threw at it. If GM had put a 4l80or even a 6l90 in that thing it would have made a world of difference.
    The 6l90 is only for the duramax you can't put them on a gas motor. The 80Es are claimed to be good for 800HP in a TRUCK (they're good trannys). 60/65 arent bad but if you put power to them they break (i never seen one break on a normal car).

    LSx motors are AWESOME. Wicked wicked strong and can take anything (it helps when you have 6 bolts mains ).
    Son of Jleews6, Johnny 5
    85 GT 1C Vert = Grey int. no power options but A/C.
    85 GT 2R Hatch = "Pepper"ALL original sunroof car grey int.,full scale restoration coming one day
    85 GT 2A Hatch = tan int. 2.5" full exhaust, frame connectors, AutoMeter Pro Comp gauges, 5-Lug w/17" Bullitts, converted to FI, 8.8 w/3.55s etc.
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  17. #17
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    Quote Originally Posted by 85 GT Kid View Post
    The 6l90 is only for the duramax you can't put them on a gas motor. The 80Es are claimed to be good for 800HP in a TRUCK (they're good trannys). 60/65 arent bad but if you put power to them they break (i never seen one break on a normal car).

    LSx motors are AWESOME. Wicked wicked strong and can take anything (it helps when you have 6 bolts mains ).
    The 6l90 is behind several LSx motors. Below is one in a 1st gen camaro

    http://www.ls1tech.com/forums/conver...o-does-go.html
    Ron Gibson

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  18. #18
    FEP Senior Member 8T3Hatch's Avatar
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    Quote Originally Posted by LTDmasta GT View Post
    agreed. we rarely get 4L80s but when they do come in, its usually burnt clutches which is 90% neglect.

    i hate to say it though, those LSx series engines are spectacular, even for being a conventional OHV engine design. if they put the effort into the trans like they did with their engines, GM products would be much more superior.
    I rarely get to ask someone in the industry but what do you think of the newer Ranger transmissions? 5r55w I believe.

    Also your opinion on the newer Grand Cherokee(99-04) transmissions? I see there are several options with the 4.7L which is the other vehicle we've been looking at ?45RFE and 545RFE? . I see lots of these with higher mileage but am wondering if they are still on the original trans.
    '83 Hatch - PBR Front/GT rear disc, Steeda Sport Springs, Tokico Blues, MM CC plates, 87+ sway bars

  19. #19
    FEP Power Member LTDmasta GT's Avatar
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    Quote Originally Posted by 8T3Hatch View Post
    I rarely get to ask someone in the industry but what do you think of the newer Ranger transmissions? 5r55w I believe.

    Also your opinion on the newer Grand Cherokee(99-04) transmissions? I see there are several options with the 4.7L which is the other vehicle we've been looking at ?45RFE and 545RFE? . I see lots of these with higher mileage but am wondering if they are still on the original trans.
    the 5R55w is in most V6 and V8 Fords now. its been in use since the Lincoln LS came out and its proven to be a very durable trans. it still has some fair share of issues and one of the things that i HATE is its lack of a dipstick. it uses a 'double plug' for checking and filling. otherwise its better than the A4LD that the rangers used to use.

    the 45 and 545 (RFE) are actually pretty stout, but are less tolerant of dirty trans fluid. i've had a handful of these come in but most of the time it was customer neglect.
    hello, my name is Epi and i'm addicted to four-eyes
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  20. #20
    FEP Senior Member 8T3Hatch's Avatar
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    Greatly appreciate your input Epi - thanks!
    '83 Hatch - PBR Front/GT rear disc, Steeda Sport Springs, Tokico Blues, MM CC plates, 87+ sway bars

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