1998 Chevy P12 chassis front brake rotors

[jlchafin256]

I am looking for a part number for the front brake rotors for this chassis but I am striking out. I have been able to locate the pads and calipers but no luck on the rotors themselves.

Does anyone have any alternate part numbers I could use for these? Any help would be much appreciated.

Thanks!

[UFO Pilot]

These are the P32 rotors:
CAR55029 Brake Rotor - Front Car Quest
CAR55031 Brake Rotor - Rear Car Quest

[Isaac-1]

Wow I am amazed there are any P12's still on the road given how few were made, and how many of their front suspension components were unique to the P12.

[jlchafin256]

Originally Posted by UFO Pilot

These are the P32 rotors:
CAR55029 Brake Rotor - Front Car Quest
CAR55031 Brake Rotor - Rear Car Quest

I have been reading up on this... Is the P12 basically the same as the Workhorse P30 or P32?

[UFO Pilot]

Originally Posted by jlchafin256

I have been reading up on this... Is the P12 basically the same as the Workhorse P30 or P32?

I don't know about the relationship but thought it might be something you could compare to your rotors.

[jlchafin256]

Originally Posted by Isaac-1

Wow I am amazed there are any P12's still on the road given how few were made, and how many of their front suspension components were unique to the P12.

I was given this by a friend.. Mileage is 57k. It needs work to get going, mostly brakes right now. Got the back ones done for now.

[Isaac-1]

Originally Posted by jlchafin256

I have been reading up on this... Is the P12 basically the same as the Workhorse P30 or P32?

The P12 is sort of a P30 derivative with a straight axle front end and higher GVWR rating (I think 21,000 pounds vs the heaviest factory P30 at the time being 16,500, higher GVWR P30's had tag axles added by the RV manufacturer) that was only built for 1-2 years around 1998, just before Workhorse bought out the Chevy P series chassis line. In a way it was an inspiration for the Workhorse W20/W22 series chassis design, at least they have a lot of design in common, but shares no parts in common. I think only about 150-200 were ever built.

[George Schweikle]

It might be that they didn't create new components for the motorhome and the P12 front suspension came from an existing Chevrolet/GM truck?. One of these sources might have parts:
https://www.gmpartsdirect.com/
https://www.millsupply.com/

Originally Posted by Isaac-1

The P12 is sort of a P30 derivative with a straight axle front end and higher GVWR rating (I think 21,000 pounds vs the heaviest factory P30 at the time being 16,500, higher GVWR P30's had tag axles added by the RV manufacturer) that was only built for 1-2 years around 1998, just before Workhorse bought out the Chevy P series chassis line. In a way it was an inspiration for the Workhorse W20/W22 series chassis design, at least they have a lot of design in common, but shares no parts in common. I think only about 150-200 were ever built.

[jlchafin256]

Originally Posted by George Schweikle

It might be that they didn't create new components for the motorhome and the P12 front suspension came from an existing Chevrolet/GM truck?. One of these sources might have parts:
https://www.gmpartsdirect.com/
https://www.millsupply.com/

What suspension parts/components are hard to find? What about shocks?

[jlchafin256]

I have been able to work through the various iterations and find the brake components for the front and back. For others future reference here is the information and part numbers I have gathered. I hope this helps others in the future or people following this thread.

-----------------Front------------------

Front Brake Calipers:
----LEFT----
OEM P/N: left 19242898
O'Reilly P/N 18-4167
GM CALIPER SLP (SLP) AC-Delco 172-2061 NEW OEM 172-2061 19242898

----RIGHT----
OEM P/N: right 19242899
O'Reilly P/N 18-41669
GM Right Side Disc Brake Caliper-Front / Rear ACDelco 172-2062

Front Brake Pads:
OEM P/N: 19212588
O'Reilly P/N:MX149

Front Rotors:
OEM P/N: 12472473 12472473 alt 9175019
O'Reilly P/N:56496RGS
Carquest P/N: 55029

-----------------Rear-------------------

Rear Brake Calipers:
P/N: 19141605 - Alt PN 18FR1408 upc 707773100967
O'Reilly P/N: 18-8044

Rear Brake Pads:
P/N: 12389421
O'Reilly P/N: MKD184

Rear Rotors:
OEM P/N: 15997232 - discontinued
O'Reilly's P/N:56493RGS
CarQuest P/N: 55031

[catmandoo62]

i have a 99 winne vectra grand tour on the p12.have had it for 9 years and other then the rgs and rbs for the auto park been trouble free.couple years ago added some sumo springs and a set of aluminum wheels and toyo tires.and that really improved the ride and handling.

[jlchafin256]

Originally Posted by catmandoo62

i have a 99 winne vectra grand tour on the p12.have had it for 9 years and other then the rgs and rbs for the auto park been trouble free.couple years ago added some sumo springs and a set of aluminum wheels and toyo tires.and that really improved the ride and handling.

RGS and RBS? Just got this rv. Can you tell me more about what that is and what the fixes are? I do know the previous owner disabled the parking brake at the drum. It is no longer connected.

[Isaac-1]

RGS and RBS are rotten green switch and rotten brown switch, these are the two failure prone pressure switches used in automatic parking brake.

[jlchafin256]

Originally Posted by Isaac-1

RGS and RBS are rotten green switch and rotten brown switch, these are the two failure prone pressure switches used in automatic parking brake.

Any upgraded components that would work better? The auto level is not working but the slides work. This is strange since they use the same hydraulic system, I am thinking this may be a function of the autopark/parking brake concern.