Technical support for service professionals
Symptom-first diagnostics, fitment lookup, install specs and bulletins for GSP driveline, hub, steering, suspension and ride control components — plus a technician on the phone when the car in your bay doesn't match the book.
Symptom router
Nobody walks in asking for a tripod joint. They describe a noise. Pick what the vehicle is actually doing and this points you at the component family, what to verify before you sell the job, and the misdiagnosis that costs shops the most time.
Running these calls all day? The Garage Support Program is GSP's installer support center — product training, install guidance and a direct line to the technical team, built for the shops doing the work.
See what's includedAlways confirm against OE service data. This router narrows the field — it does not replace the manufacturer's diagnostic procedure, torque values or inspection tolerances for the vehicle in front of you.
Garage Support Program
Forty years of building undercar components is worth very little to a shop unless it shows up in the bay. The Garage Support Program is how that happens — free to enroll, built around the job rather than the catalog.
How GSP axles, hub assemblies, struts and steering components are built, and what that means for how you diagnose and install them.
Procedure walkthroughs and the failure points behind the most common comebacks, by product line.
Application conflicts, fitment questions and failure analysis answered by staff who know these parts at the drawing level.
What documentation a claim actually needs, so evaluation doesn't stall and the part doesn't ship twice.
Takes about a minute. A GSP representative follows up with your program materials and technical contact.
Resource center
Search by year, make and model, or go straight to advanced search when the trim splits the application.
Open lookup → BULLETINSSupersessions, application corrections and known-issue notices, filed by product line and part number.
Browse bulletins → TRAININGGSP's installer support center — product training, install guidance, direct technical contact and claim support. Free to enroll.
Enroll your shop → VIDEOInstall walkthroughs and product breakdowns for axles, hub assemblies, struts and steering components.
Watch → CLAIMSCoverage terms, what documentation a claim needs, and how to start one without shipping the part twice.
File a claim → SOURCINGAuthorized GSP distributors near your shop, so the part is on the shelf when the car is on the lift.
Find one near me →Install checkpoints
In order, because the order matters. These are the failure points behind most premature returns on undercar components — the specific values always come from the OE procedure for that vehicle.
Knuckle bore, hub register and axle splines get cleaned and checked before anything goes together. A worn bore or corroded register will take out a new bearing on the same timeline as the old one.
Do not reuse a stretched axle nutDraw hub and bearing assemblies in with a press or the correct puller. Hammer blows through the outer race brinell the bearing surfaces, and the damage doesn't show up until the customer is back.
No impact gun on the axle nutBushed suspension fasteners get their final torque with the suspension loaded, not hanging on the lift. Tightened at full droop, the bushing is pre-wound and tears early.
Torque wrench, OE value, every timeAnything that changes steering or suspension geometry gets an alignment before the car leaves. Then road test at the speed the complaint occurs, not just around the lot.
Record the part number on the ROLatest from technical support
Talk to a tech
Application questions, fitment conflicts, a part that measured wrong out of the box, or a comeback you can't account for. Our technical team answers Monday through Friday, 8am to 5pm PST/EST.
Use Find My Part with the full VIN before calling — trim and build date split more applications than model year does.
Photograph the part, the box label and the unit it's replacing, side by side, before removing anything.
Do not disassemble the part. Warranty evaluation needs it intact, with the original repair order and install mileage.
