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(209) 848-3442


The services we provide to the region are second to none. Our commitment to customer satisfaction is what sets us apart from the rest. We cover the San Joaquin Valley to Monterey Bay and from the Sierra Nevadas to the San Francisco Bay Area.
Allison Transmission logo
Authorized Allison Transmission Dealer    
  • We can assist you in your purchase of a new 1000, 2000, 3000 or 4000 series on-highway transmission, B 300, B 400, B 500 coach transmission, or CL(B)T 700 series off-highway transmission

  • We offer genuine Allison ReTran® factory-rebuilt transmissions for AT500, MT600, 1000/2000, 3000, and 4000 series on highway transmissions; and B 400 and B 500 coach transmissions

  • Authorized to provide warranty repairs as a maintenance outlet for AT500, MT600, HT700, 1000, 2000, 3000, and 4000 series on-highway transmissions; B 300, B 400 and B 500 coach transmissions; and CL(B)T 700 series off-highway transmissions

  • Authorized to perform warranty repairs as an overhaul outlet for AT500, MT600, HT700, 1000, 2000, 3000, and 4000 series on-highway transmissions; B 300, B 400 and B 500 coach transmissions; and CL(B)T 700 series
    ​off-highway transmissions
AG logo
Our Allison factory-trained staff can troubleshoot virtually any hydraulic or electrical issue. We can pinpoint your problem with all the necessary tools to ensure your satisfaction.
We Offer:
  • Allison DOC – Allison DOC can perform various tasks, such as reading Diagnostic Trouble Codes and resetting parameters; CEC; WTEC I, II, III; 4th-Generation Controls.
  • TRANSHEALTH Reports (Via Allison DOC) – Lets you know the condition of each clutch pack, with Green = Good, Red = Bad, Gray = Inconclusive.
  • Electrical Troubleshooting – Transmission problems involving ECU/TCM, O.E.M. wiring harness, sensors, internal wiring harness, or solenoids.
  • ECU/TCM REFLASH (PCCS) – We can program or reprogram new or used ECU/TCM.
  • Control Valve Body Calibration – Available for AT, MT, HT series.
  • Driveability Issues – Shift problems that can be solved with minor adjustments: modulator cables, TPS cables, Fast Adapt, throttle calibration, etc.
  • Dynamometer Testing – Makes sure that the transmission passes various tests involving fluid pressure, shift points, and leaks.
Genunie Allison Transmission Parts logo
  • Featuring Genuine Allison Parts – High capacity filter kits, spin-on filters, seals, gaskets, electronics, etc.
  • Obsolete Allison Parts – We have an inventory of new and used obsolete Allison Transmission parts.
  • Oil Coolers – Wide selection of Hayden and Rocor coolers.
  • Morse – Shifters, control cables, and modulator cables.
  • External Filter – AC Delco external filter systems.
  • Power Take Offs – New and rebuilt Chelsea/Muncie power takeoffs, and kits and parts.
  • Modulators – We have new vacuum, electric, cable, and air-operated modulators.
Rebuild or Exchange Transmission
Each one of our units is tested on our dynamometer. This testing is done to simulate road conditions and to make sure your transmission runs to Allison specifications. In most cases, you have an option to have your transmission overhauled by our Allison-certified staff, or exchange it to help you get on the road ASAP.
We Overhaul:
  • AT Series – AT 540, AT 542, AT 545
  • MT Series – MT 640, MT(B) 643(R), MT(B) 644, MT(B) 648, MT(B) 650, MT(B) 653, MT(B) 654
  • HT Series – HT 700 Hydraulic Control Series, HT Electronic Series (CEC/ATEC)
  • V Drive – V-730, V-731 (CEC/ATEC)
  • 1000, 2000, 2400 Series – EVS, HS, MH, PTS, RDS, SP, B 210, B 220, Allison 4th Generation Controls
  • 3000 Series – B 300/400, EVS, HS, MD, MH, PTS, RDS, SP, TRV
  • 4000 Series – B 500, EVS, HD, HS, MH, OFS, ORS, PTS, RDS, SP, TRV
  • Each rebuilt transmission comes with a one-year unlimited mileage/hours warranty. There is an option for a two-year warranty.
  • All transmission cases must be rebuildable.
  • Coolers must be flushed and external filters changed.
  • An external cooler and filter system should be installed to extend the life of your transmission.

Call Us Today At ♦ (209) 848-3442

AG Transmission Repair

1155 Post Rd.
Oakdale, CA 95361

(209) 848-3442


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