rustyoldcars

try this used truck parts yard in Chicopee, Ma : Brian LaFlamme 413-575-0638

Hi Jesse, I have two Topkicks 1988 and a 1990 also a 1988 G30 motorhome all have versions of that Hydro Boost. Here are some Youtube links. Please watch them and read all the comments before starting any teardown. Best of luck, Harry Sorry! YouTube won't allow me to post an imbedded link so ask these questions at YouTube: Chevy Brake HydroBoost Repair Without Removing Entire Booster from your Vehicle. and 99-05 Chevy gmc hydroboost leaking

Boy! I know how you feel dead ends and blind alleys....HOWEVER I found the right one and at a terrific price. It's installed and works....check here and best wishes: CARiD.com Yes! it is the same part that GM used. Mine bolted right on and they send you a pre-paid return shipping label for the core.(I did have to call and ask for it but they emailed it to me and I printed it) I received the core charge credit in 3 days LARES® 4017 - Remanufactured Power Steering Pump International Travelall 1975, Remanufactured Power Steering Pump (4017) by Lares®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading materials using up-to-date equipment, it ensures everlasting reliability and enduring value. This product is distinguished by total quality assurance, unsurpassed by anybody else. Notes: May Need To Modify Hole In Bracket. Price: $66.90 Qty of Items: 1 Delivery: $14.64 Make: International Model: Travelall Year: 1975 Total: $81.54 FITMENT / TECHNICAL ISSUES Refundable Core Deposit What is a core deposit, why the additional charge? The item that you have selected can be recycled or remanufactured. These parts have a deposit that is charged upon purchase and fully refunded upon the return of the core. Instructions of how to receive your core deposit refund will be supplied inside the box with your product.  Detailed instructions Price: $25.00 QTY: 1 Total: $25.00 more details on - https://www.carid.com/my-account/order/41221522/

Thank you I did a ton of research. GM dealers were no help. I somehow stumbled upon by luck a rebuilt supplier (Lares® - Remanufactured Power Steering Pump #4017 https://www.carid.com/lares/remanufactured-power-steering-pump-mpn-4017.html?singleid=3510501573) from Carid.com same pump used on a 1975 International Travelall. my tracking shows it being delivered today so I should be able to confirm if it is a replacement. Again a thank you

New here! Hi to everyone, I have 2 Topkicks 89 and 91 both car haulers (my private use only). The 91 was being worked on by a mechanic who tried to rebuild the power steering/brake booster pump because of a front seal leak. After many tries he can't seem to get it right. It keeps blowing the seal out when the engine revs. I'd like to buy a new or reman pump but this one looks like a 1980-1990 pump and all the searches for a 1991 pump bring me to a different design. Is it possible mine being a 1991 could have been fitted with a phased out leftover design when new? I don't want to buy on looks alone but I need some help here.