Cadillac Owners Forum banner

1 - 20 of 31 Posts

·
Registered
Cadillac
Joined
·
55 Posts
Discussion Starter #1
For those of you that have converted the rear suspension to 2004 GTO, I have a couple of questions as I am in the process of doing the same:
Current Vehicle in question: 2000 Cadillac Catera.

1. I only want to replace the struts as they are leaking air currently in my car; do I need anything in addition to the struts? I have ordered:
MONROE SENSATRAC Rear: part # 5786
http://www.rockauto.com/catalog/raframecatalog.php
2004 GTO - OE Replacements

2. If I don't need anything in addition to what I have ordered; How do I go about disabling the auto-leveling? Would disabling the auto-leveling affect the Front Suspension?

Thanks for all the help in advance.
 

·
Registered
Cadillac
Joined
·
183 Posts
The rear shocks are pretty straight forward on replacing.

As for the leveling system on my 98 I simply removed the little steel arm from it's mounting location and zip tied it in a position to make the air pump think that there was no need to add air. Light never comes on and no the front has no relationship to the air pump.

Real easy and self explanatory once you get dirty.


By the way, the stiffer rear is a great thing and you don't notice any harsh ride or rear end sag. I tow a trailer with mine and have had several people in the back while doing so. Sure it may look lower but it never bottomed out or caused any real issues.
 

·
Registered
'00 Catera
Joined
·
121 Posts
This question is for koyla. Are/have you also replacing the front shocks? If yes, what did you use to replace the OEM shocks?

andergar
 

·
Registered
Platinum 2001 Cadillac Catera Sport
Joined
·
1,840 Posts
I'm not Koyla but I do have some info for you if you want it. The GTO front suspension has nothing but the springs in common with the Catera. The front springs will fit but they will lower the front some (not sure how much). The struts themselves will not fit. Below is a list of struts for the Catera, both OEM and aftermarket. Depending on whether you want a stock ride or a firm Sport ride I have included both types. Springs too. If you replace struts & shocks I suggest replacing the strut mounts, boots, and bump stops.

STRUTS

Koni Sport Struts & Shocks:
-Sport Strut: part # 8610-1315Sport (insert in OE strut; externally adjustable for rebound)
-Sport Shock: part # 80-2591Sport (non-air, must disable self leveling; rebound adjustment made before installation)
http://store.summitracing.com
Struts & Shocks: Sport ride.

BILSTEIN
-Strut - B4 Gas: part # VNE-4480 (OE Replacement)
-Shock Absorber - B4 Gas: part # BNE-2861 (OE Replacement)
-Strut - B6 SPORT: part # VE3-4425 (Firm)
-Shock Absorber - B6 SPORT: part # B46-2260 (Firm)
-Strut - B8 SPRINT: part # VE3-4426 (Firm/Lowered)
-Shock Absorber - B6 SPORT: part # B46-2258 (Firm/Lowered)
-Boot & Bumpstop: part # ASP-C245 (front)
http://www.carparts-cat.com/webkat.asp?SID=0007478194325913018004

KYB GR2:
-Strut: # 334903
-Strut Mount: part # SM5285
-Shock Mount: part # SM5287
-Strut Boot & Bumpstop: part # SB101
http://www.shockwarehouse.com/index.cfm?mode=results&selected_model=3755&selected_year=2001
Strut only. OEM ride. No adjustments.

Monroe:
Sensatrac Strut: part # 71503 (Twin-tube low pressure gas unit similiar to OEM)
Max-Air Rear Shocks: part # MA825 (For use with self leveling)
Upper Mount: part # 903932
Front Boot & Bumpstop: part # 63619
http://www.shockwarehouse.com/index.cfm?mode=results&selected_model=3755&selected_year=2001

ACDELCO Strut: part # 506592 {#09192250} Right / # 506591 {#09192249} Left
http://www.rockauto.com/
Factory Replacement w/o SPORT APPEARANCE PKG (RPO-TV5)

ACDELCO Strut: part # 506594 {#09192292} Right / # 506593 {#09192291} Left
http://www.rockauto.com/
Factory Replacement w/SPORT APPEARANCE PKG (RPO-TV5)

ACDELCO Part # 560227 {#72119084}
ABSORBER,RR SHK w/o SPORT APPEARANCE PKG (RPO-TV5)
http://www.rockauto.com
Factory Replacement - Catera

ACDELCO Part # 560228 {#72119087}
ABSORBER,RR SHK w/SPORT APPEARANCE PKG (RPO-TV5)
http://www.rockauto.com
Factory Replacement - Catera Sport

Gabriel Ultra Strut: part # G56769
http://www.gabriel.com
OE replacement

SPRINGS

Intrax Lowering Springs: Part # INT-25-1-001
http://store.summitracing.com/partdetail.asp?part=INT-25-1-001&FROM=MG
Lower the car 1.6 inch (40.6mm) front and 1.4 inch (35.5mm) rear.

VOGTLAND Lowering Springs: part # 955120
http://vogtlandsuspension.com/p71/Cadillac-Catera-|-97---01-Lowering-Springs/product_info.html
Lower the car 1.2 inch (30mm) F&R.

Eibach Lowering Springs: part # E-6532-140
http://www.eibach-uk.com/
Lower the car 1.2 inches (30mm) F&R.

BILSTEIN Coil Springs - 007967
Front Right Spring: part # FE1-D403
Front Left Spring: part # FE1-D402
Rear Springs: part # FE1-D020
http://www.carparts-cat.com/webkat.asp?SID=0007478194325632018004

BILSTEIN Coil Springs - 007969
Front Right Spring: part # FE1-D448
Front Left Spring: part # FE1-D404
Rear Springs: part # FE1-D020
http://www.carparts-cat.com/webkat.asp?SID=0007478194325632018004

GTO Parts

MONROE SENSATRAC Rear: part # 5786
http://www.rockauto.com/catalog/raframecatalog.php
2004 GTO - OE Replacements

ACDELCO Rear Shock: part # 560595 {#92157266}
http://www.rockauto.com/catalog/raframecatalog.php
Factory Replacements for 2004 Pontiac GTO

Pedders Suspensions - GTO Sport Ryder Springs (front & rear):
GTO SR Front Coil 0 Drop #2142
GTO SR Front Coil -20mm Drop #2151
GTO SR Front Coil -35mm Drop #2275
GTO SR Rear Coil -35mm Drop #2641
GTO SR Rear Coil -20mm Drop #2643
GTO SR Rear Coil 0 Drop #7643
Pedders GTO Sport Ryder Springs. All are 45% to 50% stiffer than stock.
http://www.peddersusa.com

Pedders Suspensions - GTO Rear Shocks:
GTO Touring CG Shock #8081 (street)
GTO GSR Rear Shock #9095 (street/track)
GTO GSR Big Bore Shock #9195 (track)
All Pedders shocks are firmer than stock to varying degrees.
http://www.peddersusa.com

.
 

·
Registered
Cadillac
Joined
·
55 Posts
Discussion Starter #6
Thanks everyone. I have ordered only the rear shocks (2004 GTO), I don't think I'll be changing the springs. Let's see what happens with the self-leveling system after I install the GTO shocks.
 

·
Registered
Platinum 2001 Cadillac Catera Sport
Joined
·
1,840 Posts
Remember, The GTO shocks are non-air adjustable. You'll have to disable or remove the self leveling system or the compressor will constantly cycle.
 

·
Registered
Cadillac
Joined
·
55 Posts
Discussion Starter #8
Remember, The GTO shocks are non-air adjustable. You'll have to disable or remove the self leveling system or the compressor will constantly cycle.
hey Elvin... Any tips on disabling the self-leveling system?
 

·
Registered
2000 Catera Sport
Joined
·
56 Posts
pull the fuse, it'll kill the power to the alc module, the pump and sensor. its located in the interior fuse panel.
 

·
Registered
Catera Sport
Joined
·
115 Posts
Hey Elvin if I remember right you bought some Koni's from RCaddy, have you had a chance to install them in your Catera yet? If so hows the ride? :cool2:
 

·
Registered
Opel Omega
Joined
·
1,419 Posts
I purchased a set of Monroe #825 kit from amazon.. 99$ shipped to my door... replaced the OEM Sport shocks with fantastic results.. Mine were starting to leak too but its back to OEM like ride. Shocks are stiff for larger displacement but allow for very soft absorption of short inputs like road ripples.
I highly suggest using those instead of the GTO ones.

Another good thing is when i have 3 big guys in the back seat the car does not squad like it would if the system was not there.
 

·
Registered
Platinum 2001 Cadillac Catera Sport
Joined
·
1,840 Posts
Hey Elvin if I remember right you bought some Koni's from RCaddy, have you had a chance to install them in your Catera yet? If so hows the ride? :cool2:
I had to skip a few things in my suspension upgrade due to needing 4 new tires pronto. The Koni struts, anti-sway bar links, PowerFlex polyurethane front/horizontal control arm and anti-sway bar bushings, oem rear/vertical bushings, and ball joints are installed.

What a miraculous difference. All but the tiniest slop at the steering wheel is gone. She turns in instantly. All thumping noise is gone. Still playing with the strut adjustment but even with their softest setting the car corners flatter than stock (Catera Sport) with no noticeable increase in harshness.

The GTO springs, front & rear braces, rear adjustable polyurethane bushings, and Koni Sport shocks will have to wait until spring (tax return).

Obviously the front needed an alignment but I had all 4 corners done. Lucky I did since the rear right's toe was way off. She tracks truer than ever and handles like a hardcore sport sedan. I've driven plenty of Bimmers and my Cat can hold her own with most of them (I can't speak of the M Series since I've never driven one).

Combined with her GTO front calipers and Corvette brake pads I have me one bad ass Catera. She may not be the quickest to the next stop light but we'll be waiting for you at the end of a twisty road. :sneaky:
 

·
Registered
Catera Sport
Joined
·
115 Posts
I had to skip a few things in my suspension upgrade due to needing 4 new tires pronto. The Koni struts, anti-sway bar links, PowerFlex polyurethane front/horizontal control arm and anti-sway bar bushings, oem rear/vertical bushings, and ball joints are installed.

What a miraculous difference. All but the tiniest slop at the steering wheel is gone. She turns in instantly. All thumping noise is gone. Still playing with the strut adjustment but even with their softest setting the car corners flatter than stock (Catera Sport) with no noticeable increase in harshness.......:
Sounds nice man, Looks like I need to be upgrading my suspension soon. :cool:
 

·
Registered
Catera 2000 & Catera 2001
Joined
·
347 Posts
Hey Elvin. Is it gto bushings you got or something for Catera? Can you advice some on those sway bar bushings? I found out broken rear coil tonight, so need some goat coils now ;-) Time for Spring tune up
 

·
Registered
Platinum 2001 Cadillac Catera Sport
Joined
·
1,840 Posts
Not sure which end of your car needs work so I covered both.

The rear antisway bars is 15mm and I couldn't find any poly substitutes except for a 16mm universal one from Prothane. Not even sure they would fit though I'm sure they could be made to. The purpose of the bushings is to hold that bar firmly in place but with the extra 1mm that's impossible so I'll be removing that from my list. OOF says they rarely fail anyway. GTO bushings will fit the rear but the springs will lower the Catera 1 inch. Hardly noticeable but it makes a difference in the handling in my opinion. I found out from the guys at OOF that the Catera uses weaker/softer springs from the Omega Elite. Both use the same self leveling system. When the air shock bladders weaken or leak the springs have to carry more weight and eventually break. GTO springs are stronger/stiffer and don't suffer the same problem according to the GTO forums. Not sure how the self leveling system would work with the stiffer springs but you could always disable it if the light keeps flashing. I have Koni shocks out back but any that fit the Catera or GTO will work. OOF says to stay away from using any eccentric bushings in the rear. I can see not using any adjustable toe eccentrics since the Catera already has an adjustable toe rod but if using the GTO springs you add more negative camber so I think eccentric camber bushings would save on tire wear.

GTO bushings won't fit the Catera front suspension. The Aussies chucked it and designed their own unique front end for their outback. We've all seen Mad Max so I can see their reasoning. :yup: The BMW/M5 uses a harder rubber bushing that will fit the Catera, and Powerflex makes polyurethane bushings for the Omega that fit the Catera at the front/horizontal position. We still have to use the OEM rear/vertical bushing as there is no substitute, but you have a choice of the OEM rubber or Powerflex polyurethane antisway bar bushings. I went with Powerflex in both. I also replaced the front strut top mounts, ball joints, and my antisway bar drop-links. All this front end work was done about 5 years ago when I had the Koni struts installed. Since it was all apart it made sense to have all the other stuff refreshed. Still feels great.

I pasted up a quick list here but you can read the whole thing at:
http://cateraowners.forumotion.com/t108-catera-suspension-upgrades-overview

[HR][/HR]
Front Suspension Bushings

AC-DELCO (GM/OE) Replacement Front/Horizontal Bushing: Part # 45G9329 {#19187194}
http://www.rockauto.com/catalog/raframecatalog.php
Factory Replacements (rubber).

Meyle Bushings BMW E34/M5 Heavy Duty Bushings: part # 31121136607MY
http://www.germanautosalvage.com/services4.html
Heavy Duty rubber front horizontal BMW/M5 bushing for Omega/Catera.

Korman Auto Works:
Heavy-Duty Bushings (BMW M5/E34) - P/N 3112567 (HD Rubber)
http://www.kormanautoworks.com/e34.htm

MOOG:
1993 BMW/M5 Thrust Arm Bushing - part # K90137
http://www.rockauto.com/catalog/raframecatalog.php
BMW/M5 OE bushing (HD Rubber) for Catera/Omega front/horizontal bushing.

Bavarian AutoSport:
BMW/M5 (1993) Upper Control Arm Bushing: part # : 31 12 2 226 528
http://www.bavauto.com/shop.asp
BMW OE bushing (HD Rubber) upgrade for Catera/Omega front/horizontal bushing.

Powerflex:
Opel Omega B ('94-'03) part # PFF80-902 (POLYURETHANE)
BMW E34/M5: part # PFF5-601 (POLYURETHANE)
http://www.powerflex.co.uk/road-series/product-details/Front+Wishbone+Front+Bush/1760.html
Polyurethane bushing for Omega/Catera front/horizontal bushing.

Powerflex:
Opel Omega B ('94-'03) part # PFF80-901-26 (POLYURETHANE)
http://www.powerflex.co.uk/road-ser...+Anti+Roll+Bar+To+Chassis+Bush+26mm/1759.html
Front Anti Roll Bar To Chassis Bushing (26mm)

[HR][/HR]
Rear Suspension Bushings

Rear Semi-Trailing Arm Bushing (Rubber, OEM)
MOOG Part # K200061 {#90223456}
Rear Lower Outer
MOOG Part # K200060 {#904471576}
Rear Rearward Inner At Crossmember
RAYBESTOS Part # 5701143
Rear Outer
ACDELCO Part # 45G11143 {#19195668} Professional Grade
Rear Outer

Whiteline Rear Suspension Bushing: part # KCA384 (POLYURETHANE/eccentric) rear outer position only
http://www.globalperformanceparts.com/fitting_instructions/KCA384.pdf
Provides a camber adjustment range of +/-1.0 degree from base settings for lowered rear suspension (outer position only).

SuperPro Rear IRS Control Arm Bushing Kit (POLYURETHANE): #SPF0611K (POLYURETHANE)
http://www.superpro.com.au/superpro-parts/?view=part&id=SPF0611K&cid=999501045&vid=32606
(set of 2) No Adjustments (for non lowered cars)

Pedders Suspensions - GTO IRS Bushing (POLYURETHANE)
GTO IRS Inner Lower Arm Urethane Bush (no adjustments) #EP7023
http://www.peddersusa.com/product/GTO-EP7023-R-LCA-Bushings?gfid=p695-c1399

Pedders Suspensions - Rear Camber Eccentric (POLYURETHANE)
GTO Rear Camber Kit #5403 (adjustable camber)
http://www.peddersusa.com/product/GTO-5403-Adjustable-Rear-LCA-Bushings?gfid=p991-c1938

Energy Suspension:
GTO Rear Control Arm Bushings: 33188R Control Arm Bushings (POLYURETHANE)
http://www.sfxperformance.com/parts/ENE33188R.htm
http://www.jegs.com/i/Energy+Suspension/355/3-3188R/10002/-1
No Adjustments

[HR][/HR]
NOTE: Due to the design of the Catera/Omega/GTO/Monaro rear suspension adjustable/eccentric bushings aren't needed or recommended. Use them at your own risk. I list them in order to inform the owner.
INSTALLATION TIP: DO NOT torque the rubber control arm bushing nuts & bolts until the car is lowered to the ground. If not the rubber will be pre-stressed when the car is lowered to the ground, increasing the chances of tearing. Polyurethane bushings can be torqued while the car is raised. Polyurethane is "slippery" and will pivot rather than tear.
 

·
Registered
Catera 2000 & Catera 2001
Joined
·
347 Posts
BMW vs Catera bushings side by side IMAG2273.jpg IMAG2271.jpg IMAG2272.jpg
BMW bushing is definitely stiffer, I can tell even before installation, more rubber around center hole, but catera's bushing is heavier for some reason, looks like it has thicker metal outer bushing walls. Dimention wise is really almost identical, a little difference which wont matter once under the press.
 

·
Registered
Catera 2000 & Catera 2001
Joined
·
347 Posts
Do they make noises? like some peps complain? The only reason I got BMW rubbers because few people complain on squealing and BMW owners experience sort of vibration at 55 mph.... But I got those dirt cheap, 4$ a piece, and its good quality, so win win too )))

----------

Do you have black edition or this purple ones? How long have you had them?
 

·
Registered
Platinum 2001 Cadillac Catera Sport
Joined
·
1,840 Posts
I've had mine for about 7 years. They're the blue (purple?) ones. They squeaked for the first time last year. Had the tech squirt them (the anti-sway bar bushings too) with lube when I had the oil changed, and they haven't made a sound since. Very satisfied with them. My original problem was excessive tire wear and violent shaking under braking. New bushings cured both.
 

·
Registered
Catera 2000 & Catera 2001
Joined
·
347 Posts
That's what I have sometimes, shaking. Replaced rotors, tie rod ends, idler arm.... I was thinking to get them, but got those BMW ones. Will see how they work, its always easy to put those ones. Sound like they are even simpler to inßtall them, no press required?
 
1 - 20 of 31 Posts
Top