We pride ourselves in offering over 80 years of technician experience. Our service department offers full-service support on everything we sell, a complete line of parts, and warranty administration. Our commitment is to correct the problem right the first time and keep your buses on the road and operating safely.


All our technicians and service support staff are factory trained and authorized to perform any and all repairs on the products we sell.  They are the bus experts.  Our primary focus is on buses and we are very good at it.  Our staff is required to attend continuing education to keep up with the ever changing world of buses.

Onsite service

Onsite service at a reasonable price.  Save time and money by having us come to you!  Factory trained and authorized technicians.

Tech Line

Call John Hamilton, certified trainer and national service award winner.  Free call and NO COST technical counsel to Telin customers.  866.287.7278 or  jhamilton@telingroup.com.

Customer Performed Warranty Agreement

Customer Performed Warranty Agreement (CPWA) – Do your own warranty and be paid for it.  Saves you downtime and travel costs (restrictions may apply). Would you like to be considered for this program? Fill out this form and return to sarmour@telingroup.com. CPWA application

Onsite Training

Employees that are knowledgeable and capable in their skills are more productive, safer, motivated and efficient.  Our courses are developed to meet the highest learning standards.  We do this by providing solid foundational knowledge and extensive hands on application.  We provide training either at your location or ours.  Classes are tailored to meet your technician’s level of training needs.

Master Fault Codes

Onboard diagnostic at your fingertips.  Fault codes can be accessed at the in-dash information center. 
Fault Codes link

Cummins Filtration Facts and FAQ's

Today's Cummins engines give higher performance and better fuel economy than ever before. Lubricating oils have also evolved to meet the demands of the harshest driving and operating conditions, and now filters are evolving too.

Follow these links for valuable information.
Coolant Filtration Fact Sheet
Frequently Asked Questions
Coolants: What You Don't Know Can Hurt Your Engine
Cummins Filtration

Online diagnostic for Thomas Saf-T-Liner C2 and Cummins Engine

Take diagnostics to the next level.  Online software that is “vehicle specific” will scan your bus for deeper level of information.  The online software for the Thomas Safe-T-Liner C2 is web based and is NO COST to Telin customers.  Web based means it can be accessed from anywhere and is never outdated.  Laptop and connectors can be purchased from Telin or your computer supplier.

ElDorado Electrical Center

Click Here to find links to Schematics, WIre Diagrams, Troubleshooting Guides for the ELDorado Buses