Frame and Structural Repair / In shop only
Unibody Straightening for Vans and Light Commercial in Yorba Linda
Unibody straightening restores a monocoque structure where the body panels carry structural load, which covers most modern cargo and camper vans. Correction requires anchored measured pulling and, on ADAS equipped vans, mandatory sensor recalibration afterward.
A Sprinter has no separate frame. The floor pan, the sills, the pillars and the roof rails together are the structure, and an impact into any one of them redistributes load through the rest.
That makes unibody correction less forgiving than frame work. There is no rail to pull against independently of the body, so measurement points are more numerous, tolerances are tighter, and the sequence of correction matters more.
What makes unibody repair different from frame repair?
On a body on frame vehicle, the frame is the datum and the body sits on it. On a unibody, the body is the datum, which means the reference points you are measuring to are themselves part of what may have moved.
Correction sequence therefore matters enormously. The structure is brought back in a specific order, generally working outward from the least damaged reference points, because correcting a secondary deformation before the primary one locks the error in.
How does a camper van conversion complicate this?
Significantly, and it is the single most under appreciated issue in van collision repair.
A conversion adds substantial mass and it fastens to the structure. Cabinetry bonded or bolted to the sidewalls, a bed platform tied into the floor, a roof rack through bolted to the roof rails, a lithium bank and water tank adding hundreds of pounds low down. All of it changes how the structure responds to both the impact and the correction.
Practically, the conversion frequently has to come out before the structure can be pulled, and that removal and reinstallation is real labor that belongs on the estimate. Documenting the conversion before it is disturbed is the difference between it being paid for and not.
Why is ADAS recalibration mandatory after unibody work?
Because the sensors are mounted to the structure you just moved.
Modern Sprinters carry radar behind the front fascia, cameras in the windshield mount, blind spot sensors in the rear quarters, and ultrasonic sensors around the perimeter. Every one of those is aimed relative to the vehicle centreline. Straighten the structure and those aim points change, and a radar that is a fraction of a degree off is worse than useless because it reports confidently and wrongly.
Recalibration after structural work is not optional and it is not an upsell. It runs $285 to $1,800 at 1 to 7 hours and it is on every structural van estimate we write.
What Is Included
- 01Full unibody dimensional measurement against factory specification
- 02Conversion documentation and removal where correction requires it
- 03Anchored measured pulling in correct correction sequence
- 04Sectioning and panel replacement at factory designated locations
- 05Corrosion protection restored at every disturbed seam
- 06ADAS scan and full recalibration
- 07Post repair measurement record
Our Process and Timeline
Shop hours and calendar days are different things. These are the stages and the realistic duration of each.
- 011 day
Measurement and conversion documentation
Structure measured, and any camper or fleet conversion photographed and itemized before it is disturbed.
- 021 to 4 days
Conversion removal
Interior build removed where structural correction requires access. Components catalogued for reinstallation.
- 032 to 8 days
Anchored correction
Structure pulled in correct sequence with measurement between stages.
- 042 to 10 days
Panel replacement and seam sealing
Sectioning at factory locations, corrosion protection and seam sealer restored.
- 053 to 10 days
Refinish and reassembly
Refinish, conversion reinstalled, systems reconnected and verified.
- 061 to 2 days
ADAS recalibration and delivery
Full scan, static and dynamic recalibration as the vehicle requires, and delivery with the measurement record.
Common Problems and How We Solve Them
The van drives straight but the lane assist keeps intervening wrongly.
SolutionClassic post structural repair symptom of uncalibrated ADAS. The camera or radar is aimed to the old structure. Recalibration resolves it.
My conversion was damaged during a previous repair and the carrier will not pay.
SolutionBecause it was never documented before teardown. We photograph and itemize conversions at intake, which is the only moment that evidence is easy to produce.
The sliding door binds after the repair.
SolutionThe opening is out of tolerance. That is a measurement problem, not an adjustment problem, and shimming the door will not fix it.
Frequently Asked Questions
How much does van unibody straightening cost?
Structural van collision work sits in the $1,500 to $40,000 and up band at 10 to 200 labor hours, plus $285 to $1,800 for ADAS recalibration.
Do you need to remove my camper conversion?
Often yes, where the correction requires access to the structure behind it. We document and itemize the conversion before removal so the labor is on the claim.
Is ADAS recalibration really necessary?
Yes. Sensors are aimed relative to the structure. Once that structure is corrected the aim is wrong, and a miscalibrated radar reports confidently incorrect information.
Can a unibody van be structurally repaired at all?
Yes, at factory designated sectioning locations using specified procedures. Repair outside those locations is not appropriate and we do not do it.
Vehicles We Perform This On
Related Services
We Can Help. Contact Us Today.
Bring the vehicle to our Yorba Linda facility and we will document the damage properly, work directly with your carrier, and give you a written figure built from published rates and real labor hours.
All work is performed at our Yorba Linda facility. We do not offer mobile, roadside or fleet route service.