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DMS Switching Checklist for Parts Departments
Parts is the hardest inventory in the building to convert, and the errors get discovered at the counter with a customer standing there.
Read this part first
We should be straight with you before you spend twenty minutes here. LeadLocate does not sell parts inventory software, a parts counter system or a dealer management system. There is no parts module on our platform, no purchase ordering, no supersession handling and no warranty parts processing. If you came looking for a product, this is not one.
What this is, is a checklist written because parts departments consistently get the least attention in a conversion plan and then produce the most damage. The sales department gets the demo, the accounting office gets the project meetings, and the parts manager finds out three weeks before go live that somebody needs a physical inventory done by Friday.
The reason parts is hard is that it is the only department where the data is physical. An accounting balance that is wrong can be corrected quietly next week. A part quantity that is wrong is discovered by a technician standing at the counter waiting for a component that the system says is in bin 14 and is not there. That failure costs you a repair order, a customer, and the parts manager's credibility with the shop, all in one moment.
Work through this with your parts manager rather than at them. They know where the bodies are buried in that file, and they will tell you if you ask before the plan is already written. The wider sequencing lives in our conversion timeline guide.
Start with a physical inventory, and do not negotiate on this
Every conversion consultant says take a physical inventory before you convert. Every store that skips it regrets it. Do it.
The reason is simple. Whatever quantity is in the old system is what gets carried into the new one, errors included. If your on hand counts have drifted over five years, and they have, converting means you have now paid to move a wrong number into a system where everyone will assume it is right because it is new.
Schedule it properly. A full count in a mid size parts department is a weekend with extra hands, and it is worth the overtime. Count everything, including the shelf of slow movers nobody has touched since the last conversion. Reconcile the count against the system before the conversion date, not after, and post the adjustments in the old system so your accounting agrees with the physical reality that is about to move.
Two details people miss. Count cores separately and reconcile them against outstanding core credits, because cores are money sitting on a shelf that nobody looks at. And count special order parts that are on the shelf waiting for customers, because they are physically present but committed, and a converted system that treats them as free stock will sell them twice.
Get the count signed off by both the parts manager and the controller. Two signatures on a number is how you stop a later argument about whether the variance came from the count or the conversion. The controller checklist covers the accounting side of that reconciliation.
Clean the file before it moves
A conversion is the only good excuse you will ever get to delete things, and most stores waste it by converting everything out of nervousness.
Obsolescence is the obvious target. Parts with no sales history in twenty four months, no on hand quantity, and no open orders do not need to travel. Neither do superseded numbers whose replacements are already in the file, discontinued items from franchises you no longer hold, or the accessory line you stopped carrying in 2019. Run the aging report, sit with the parts manager, and make deliberate decisions rather than moving forty thousand records because it feels safer.
Then fix what is staying. Duplicate part numbers under slightly different formats, the same item entered with and without dashes, descriptions that were typed in free text by three different people, and bin locations that describe a shelving layout you replaced two years ago. Every one of those problems converts perfectly intact and becomes permanent.
Pay attention to number formatting specifically, because it is the quiet killer. Systems differ on whether they store dashes, spaces and leading zeros in part numbers. If the new system normalizes differently than the old one, a scan or a lookup that worked yesterday returns nothing today, and your counter staff will believe the whole conversion is broken. Ask the vendor how part numbers are normalized, then test it with your ugliest real numbers, not with a clean sample.
Our page on data cleanup before migration covers the same discipline across the other departments.
What has to map, field by field
Ask for the field mapping in writing and read it. Do not accept a reassurance that everything comes over, because everything never comes over.
- Part number, description and manufacturer line. Including how multiple lines are distinguished when the same number exists in two of them.
- On hand quantity and bin location. Including multiple bins for one part, which some systems support and others flatten.
- Cost. Both current replacement cost and the inventory value your accounting is carrying, which are not always the same number and must reconcile to the general ledger.
- Sales history. Usually the first thing a vendor offers to trim. It is also what drives stocking levels, so losing it means your reorder points are guesswork for a year.
- Supersession chains. Ask specifically whether history follows the chain or only the current number. This determines whether a lookup on an old number still finds the right part.
- Stocking levels, reorder points and phase in phase out status. Rebuilding these by hand across thousands of lines is a month of somebody's life.
- Special order parts with the customer or repair order they are committed to.
- Core tracking and outstanding core credits.
- Wholesale customer records with their pricing level and terms.
For each line, ask three questions: does it convert, does it convert with history, and if not, what is the manual workaround. Write the answers down. That document is what you will argue from in week three.
Pricing is where the money quietly leaks
Parts pricing is more complicated than anyone outside the department realizes, and it converts badly more often than quantities do.
Most stores run a price matrix: a set of markup rules by cost band, sometimes varying by labor type, customer type or manufacturer line. That matrix represents years of tuning and it is worth real gross. Get it documented before the conversion in a form a human can read, not just as a setting inside the old system, because if it does not convert cleanly you will need to rebuild it from that document.
Then there are customer pricing levels. Wholesale accounts, fleet accounts, body shops, internal rates for your own service department, warranty pricing and the odd handshake arrangement that exists only in the parts manager's memory. Every one of those has to be identified and reproduced, and the handshake ones will not be in any report.
Test before go live rather than after. Take twenty real parts across different cost bands and different customer types, price each one in the old system and the new system, and compare. Twenty comparisons take an hour and catch problems that would otherwise be found by a wholesale customer who noticed their invoice went up.
Internal pricing to your own service department deserves specific attention because it affects departmental gross allocation, and getting it wrong distorts both departments' numbers for months without anybody noticing. Coordinate this with the service department checklist, since the two sides have to agree.
Open transactions across the cutover
The single most useful thing you can do in the two weeks before go live is reduce the number of things that are in flight on cutover day. Everything open on that date has to be handled by a rule, and every rule you avoid needing is a rule that cannot be applied wrong.
Purchase orders. Close what can be closed. For orders that will arrive after the date, write the policy now: are they received into the old system and adjusted, or held and received into the new one. Pick one, tell the vendor and the receiving clerk, and post it on the wall.
Special orders. These are the ones that hurt customers directly, because a part ordered for a specific person and lost in a conversion means a phone call you do not want to make. Print a full list of open special orders with customer name, phone number, part, and the repair order or ticket it belongs to. Keep it on paper. Paper survives conversions.
Cores and returns. Outstanding cores, parts on return authorization, and warranty parts awaiting disposition all represent money and all get orphaned easily. Document them with the same discipline as special orders.
Wholesale receivables. Coordinate with accounting on exactly when the parts receivable balances are cut, so wholesale customer statements do not go out with a gap or a duplicate. If you are running an accounting parallel period, decide whether parts transactions are part of it before the first day rather than mid month.
Catalogs, ordering connections and the counter workflow
Your parts department depends on connections that live outside the dealer management system, and each one has to be reestablished. Make the list early because lead times on vendor side setup are longer than anyone plans for.
Manufacturer parts ordering and stock order submission. Electronic catalog access, whether OEM or aftermarket. Price file and supersession updates, including the schedule they arrive on. Tire and accessory suppliers. Any wholesale ordering portal your outside customers use to send you orders. Barcode scanners and label printers, which sound trivial until nobody can print a shelf label on the first Monday.
For each one, find out who initiates the reconnection, what information the vendor needs, and how long they take. Some manufacturers require paperwork with a lead time measured in weeks. Starting that conversation the week before go live is how a parts department ends up ordering by phone for a month.
Then walk the counter workflow itself with a stopwatch before you commit. How many keystrokes to look up a part, check availability, add it to a ticket and print. If the new system takes twice as many actions per transaction, your throughput drops and your counter people will tell you the system is bad. Sometimes they are right, and it is better to know that during evaluation than after signature. Take that observation into the demo questions rather than leaving it to chance.
Cutover day and the two weeks after
Plan the day hour by hour and give the parts department its own section of that plan rather than a mention.
Have the parts manager or an experienced counter person on site with the implementation team, not scheduled off. Have printed backups within arm's reach: open special orders, open purchase orders, the price matrix documentation, the signed physical inventory, and a list of your top two hundred moving parts with their bin locations. If the system is unavailable for two hours, that paper keeps the shop running.
Expect to be slow. A counter that normally turns a ticket in ninety seconds will take four minutes for the first week, and technicians waiting at the counter is the fastest way to sour a shop on a conversion. Tell the service manager in advance so the shop schedule is lightened rather than surprised.
In the first two weeks, run a short cycle count on your fastest moving parts and reconcile against the new system. Not a full inventory, just the two hundred lines that move daily. If those tie, your conversion is probably sound. If they do not, you have found the problem while it is still small.
Also reconcile total parts inventory value to the general ledger at the first month end and get a written explanation for every variance. Timing difference, posting convention, or defect. Only the third is a real problem, but you cannot tell them apart without doing the work. Historical record migration covers what to archive from the old system before it goes dark, and verify the archive actually opens before anyone switches anything off.
Keep the sales side out of it
One closing point, and it is the reason a lead generation company has a parts checklist on its website at all.
A dealer management system conversion is an operations and accounting project. It has no business touching your lead flow, your follow up cadence, your texting or your appointment book, yet stores let it happen constantly, and then wonder why the month after go live was soft on the sales side too.
The structural fix is to keep the lead and communication layer in a system that has no dependency on the dealer management system. That is how our platform is built, deliberately. Neither a DMS connection nor an inventory feed is required to operate, so a conversion changes nothing about where leads land, who owns them, whether automations fire, or whether desking works. To be explicit about what we are not: there is no general ledger, no accounts payable or receivable, no payroll, no deal posting to accounting, no parts, no repair orders and no title work here. We are the lead, communication and desking layer that sits beside whatever system your store runs.
The practical rule is one project per quarter. Do not run a CRM change and a DMS conversion at the same time. If both are genuinely needed, do the smaller and reversible one first so the sales floor has stable ground while parts is counting bins. If you want to talk through the sequencing with someone who has watched this go both ways, call 844-376-2274 or use contact us.
Frequently Asked Questions
Does LeadLocate sell parts inventory software?
No. There is no parts module, no purchase ordering, no supersession handling and no warranty parts processing, and we do not sell a dealer management system. This checklist is buyer education for a decision you are making with a DMS vendor.
Do we really need a physical inventory before converting?
Yes. Whatever quantity sits in the old system is what moves, errors included, and afterwards everyone will assume the numbers are right because the system is new. Count everything, reconcile before the conversion date, and get the count signed by both the parts manager and the controller.
What converts worst in a parts file?
Supersession chains, multiple bin locations for one part, price matrices, customer pricing levels and long sales history. Ask for the field mapping in writing, and for each line ask whether it converts, whether history follows it, and what the manual workaround is if not.
How do we handle special orders across the cutover?
Reduce them first, then print a paper list of everything still open with customer name, phone, part and the ticket it belongs to. Paper survives conversions. A special order lost in a cutover is a phone call to a customer who has already waited once.
How long before the counter is back to normal speed?
Plan for one to two weeks of slower transactions and tell the service manager in advance so the shop schedule is lightened. Walk the counter workflow with a stopwatch during evaluation, because a system that needs twice the keystrokes per ticket will cost you throughput permanently.
Should we change our CRM during the same period?
No. One project per quarter. If both are needed, do the CRM first because it is smaller and reversible. Keeping the lead layer on a platform with no DMS dependency means the sales floor is unaffected while the conversion runs.
Keep selling cars while the parts department counts bins
Leads, follow up, texting and desking on a platform that needs no DMS connection. Month to month, no long term contract, and unaffected by whatever your conversion week looks like.


LeadLocate® All rights reserved. Other product and company names mentioned herein are the property of their respective owners.
Answers to your questions:
LeadLocate is an all-in-one lead generation software and CRM platform. We generate in-market sales leads and provide you with all the tools necessary to sell that customer. All of your leads, texts, calls, emails, deals, and files are available in one place, accessible with a single login.
LeadLocate® All rights reserved. Other product and company names mentioned herein are the property of their respective owners.
Answers to your questions:
LeadLocate is an all-in-one lead generation software and CRM platform. We generate in-market sales leads and provide you with all the tools necessary to sell that customer. All of your leads, texts, calls, emails, deals, and files are available in one place, accessible with a single login.



