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#2171376 - 02/14/11 08:16 PM 04 Tahoe. Tool for the brake calipers?
Chris142 Offline


Registered: 06/05/03
Posts: 13880
Loc: apple valley, ca
Latest Girlfriend has an 04 Tahoe 2wd that she bought brand new. It's never had any brake work done to it. The front brakes are down to the squeekers and I cant get the stupid calipers off!

The bolts are a torx. Every set has a T50 and a T55 and this bolt uses something in between these 2 sizes and nobody has one. It's not an Allan, it's a Torx. A 50 is too small and a 55 is too big.

No way to grab the bolts with vicegrips as the bolts are beveled.

Anybody know what size it is and who has the tool?
_________________________
02 Wrangler super-s 10w30
87 F250 delo 15w40
04 Tahoe super-s 5w30
Z400 Lucas 10w30
KLR250 Maxima 10w40
Can am maveric delo 5w40

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#2171381 - 02/14/11 08:21 PM Re: 04 Tahoe. Tool for the brake calipers? [Re: Chris142]
justinf89 Offline


Registered: 07/11/10
Posts: 534
Loc: Hampton, VA
3/8 torx. I have one for my 04 safari. Any autoparts should have it. I got mine from advance auto.
_________________________
97 Explorer 4.0L SOHC - 155k - ML 5w-30/PL30001

04 Safari 4.3L - 235k - ML 5w-30/L24011

05 Silverado 6.6L DMX - 135k - Ams AME/EAO52

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#2171388 - 02/14/11 08:29 PM Re: 04 Tahoe. Tool for the brake calipers? [Re: Chris142]
Chris142 Offline


Registered: 06/05/03
Posts: 13880
Loc: apple valley, ca
Is 3/8th the torx size or the drive size. Torx are numbered T10, T15,T20 etc.
_________________________
02 Wrangler super-s 10w30
87 F250 delo 15w40
04 Tahoe super-s 5w30
Z400 Lucas 10w30
KLR250 Maxima 10w40
Can am maveric delo 5w40

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#2171392 - 02/14/11 08:35 PM Re: 04 Tahoe. Tool for the brake calipers? [Re: Chris142]
defektes Offline


Registered: 09/09/09
Posts: 3216
Loc: Hesperia, CA, USA
I did a couple tahoes, and they were T-55.
_________________________
2002 GMC Sierra 5sp. 4.3L 145K ST3980 E-Core
Chevron Supreme 5w-30, Amsoil Synchromesh In Tranny
Valvoline SynPower 75w-90 Gear Oil In Rear

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#2171393 - 02/14/11 08:35 PM Re: 04 Tahoe. Tool for the brake calipers? [Re: Chris142]
Chris142 Offline


Registered: 06/05/03
Posts: 13880
Loc: apple valley, ca
This is the bolt. Unfortunatly the add does not state the tool needed.

http://cgi.ebay.com/ebaymotors/ACDelco-1...emZ350436944577
_________________________
02 Wrangler super-s 10w30
87 F250 delo 15w40
04 Tahoe super-s 5w30
Z400 Lucas 10w30
KLR250 Maxima 10w40
Can am maveric delo 5w40

Top
#2171395 - 02/14/11 08:36 PM Re: 04 Tahoe. Tool for the brake calipers? [Re: defektes]
Chris142 Offline


Registered: 06/05/03
Posts: 13880
Loc: apple valley, ca
Originally Posted By: defektes
I did a couple tahoes, and they were T-55.
Weird. This one isn't.
_________________________
02 Wrangler super-s 10w30
87 F250 delo 15w40
04 Tahoe super-s 5w30
Z400 Lucas 10w30
KLR250 Maxima 10w40
Can am maveric delo 5w40

Top
#2171410 - 02/14/11 08:44 PM Re: 04 Tahoe. Tool for the brake calipers? [Re: Chris142]
eljefino Offline


Registered: 06/15/03
Posts: 29283
Loc: ME
Is it one of those weird "torx-plus" ?

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#2171422 - 02/14/11 09:02 PM Re: 04 Tahoe. Tool for the brake calipers? [Re: eljefino]
Chris142 Offline


Registered: 06/05/03
Posts: 13880
Loc: apple valley, ca
Originally Posted By: eljefino
Is it one of those weird "torx-plus" ?
Maybe? I've never heard of these till you brought it up.
_________________________
02 Wrangler super-s 10w30
87 F250 delo 15w40
04 Tahoe super-s 5w30
Z400 Lucas 10w30
KLR250 Maxima 10w40
Can am maveric delo 5w40

Top
#2171454 - 02/14/11 10:05 PM Re: 04 Tahoe. Tool for the brake calipers? [Re: Chris142]
Stu_Rock Offline


Registered: 09/23/09
Posts: 998
Loc: Houston, TX
My references say this is the same bolt on all GMT800 trucks. It should be a T55. Try a T55 bit socket from another tool brand. Maybe try pounding it in with a hammer.

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#2171474 - 02/14/11 10:34 PM Re: 04 Tahoe. Tool for the brake calipers? [Re: Stu_Rock]
Chris142 Offline


Registered: 06/05/03
Posts: 13880
Loc: apple valley, ca
Originally Posted By: Stu_Rock
My references say this is the same bolt on all GMT800 trucks. It should be a T55. Try a T55 bit socket from another tool brand. Maybe try pounding it in with a hammer.
No way a T55 will fit. It's much larger than the hole. A T50 spins freely in the hole.
_________________________
02 Wrangler super-s 10w30
87 F250 delo 15w40
04 Tahoe super-s 5w30
Z400 Lucas 10w30
KLR250 Maxima 10w40
Can am maveric delo 5w40

Top
#2171502 - 02/14/11 11:11 PM Re: 04 Tahoe. Tool for the brake calipers? [Re: Chris142]
defektes Offline


Registered: 09/09/09
Posts: 3216
Loc: Hesperia, CA, USA
Very odd, possible that the bolt is defective, when you get it out, buy new ones and see if they are T55, should be. my sierra is also t55 on the front. The Silverado we have uses a 18mm bolt head.
_________________________
2002 GMC Sierra 5sp. 4.3L 145K ST3980 E-Core
Chevron Supreme 5w-30, Amsoil Synchromesh In Tranny
Valvoline SynPower 75w-90 Gear Oil In Rear

Top
#2171593 - 02/15/11 03:13 AM Re: 04 Tahoe. Tool for the brake calipers? [Re: Chris142]
justinf89 Offline


Registered: 07/11/10
Posts: 534
Loc: Hampton, VA
I'm telling you it's a 3/8" star bit.
_________________________
97 Explorer 4.0L SOHC - 155k - ML 5w-30/PL30001

04 Safari 4.3L - 235k - ML 5w-30/L24011

05 Silverado 6.6L DMX - 135k - Ams AME/EAO52

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#2171714 - 02/15/11 09:10 AM Re: 04 Tahoe. Tool for the brake calipers? [Re: justinf89]
Chris142 Offline


Registered: 06/05/03
Posts: 13880
Loc: apple valley, ca
Originally Posted By: defektes
Very odd, possible that the bolt is defective, when you get it out, buy new ones and see if they are T55, should be. my sierra is also t55 on the front. The Silverado we have uses a 18mm bolt head.
Well I tried more than 1 bolt.




Originally Posted By: justinf89
I'm telling you it's a 3/8" star bit.
Nobody lists a 3/8 star bit. It must have another name? I'm wondering if what your calling a 3/8 torx is really a Torx Plus since those wont work with a regular Torx bit.
_________________________
02 Wrangler super-s 10w30
87 F250 delo 15w40
04 Tahoe super-s 5w30
Z400 Lucas 10w30
KLR250 Maxima 10w40
Can am maveric delo 5w40

Top
#2171728 - 02/15/11 09:24 AM Re: 04 Tahoe. Tool for the brake calipers? [Re: Chris142]
Chris142 Offline


Registered: 06/05/03
Posts: 13880
Loc: apple valley, ca
The aftermarket bolts have a 15mm hex on them that will take a regular wrench or socket.
_________________________
02 Wrangler super-s 10w30
87 F250 delo 15w40
04 Tahoe super-s 5w30
Z400 Lucas 10w30
KLR250 Maxima 10w40
Can am maveric delo 5w40

Top
#2171964 - 02/15/11 01:29 PM Re: 04 Tahoe. Tool for the brake calipers? [Re: Chris142]
Stu_Rock Offline


Registered: 09/23/09
Posts: 998
Loc: Houston, TX
Well, try to get your hands on some Torx Plus bit sockets. It sounds like IP50 or IP55 might be the size.

Justin is definitely not calling his bit by its official name. Maybe a picture would help.

It could also be a Polydrive, a.k.a. RIBE, head. Here's the M16:

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