For collision repair and general mechanical work in Chula Vista, Union Auto Repair Shop on Arizona Street has maintained a combined body-and-mechanical bay since 2008. Frame straightening and structural-pull work on unibody and body-on-frame platforms restore crash-damaged vehicles to pre-loss geometry, a collision pipeline that sources salvage-grade OEM panels and mechanical components from Montoya's Auto Wrecking & Auto Repair when recycled factory parts match the damage profile. Paint services use basecoat/clearcoat systems with computerized color matching to blend repaired panels into the factory finish. Insurance-claim repairs cover the full cycle from initial damage assessment and estimate documentation through structural repair and final paint — a multi-week process during which collision customers arrange interim transport through Men In Black Transportation while the vehicle remains in the bay. Dent-removal services include paintless dent repair on aluminum and high-strength steel panels, along with MIG and TIG welding for structural joints that require full-penetration welds per I-CAR collision repair standards.