Shop Buick Rainier by category
Parts that fit your Buick Rainier, by department.
Buick Rainier
Parts fit 2004 to 2007. Owner reports cover 1996 to 2025, mapped to 1 NHTSA name, so vehicles of very different ages are counted together.
18 of 218 parts name an engine. The other 129 fit any, so choosing one here only narrows those 18.
What owners report
6 of 12 components, the largest by share, together 65.7% of all mentions. 390 reports filed with NHTSA from 1996 to 2025, read through 4 name and year queries against 1 source name. A report can name more than one component, so these 390 reports carry 599 mentions, 1.54 for each report, and every share below is of those 599. 12 more mentions were filed as unknown or other and are excluded from both the rows and the total.
What we can sell for it
218 parts from 29 brands fit this vehicle across 9 categories, and parts listed here fit model years 2004 to 2007. Drivetrain & Transmission is the deepest at 106 parts from 3 brands. 4 of the 6 components above map to a category we stock, and the other 2 map to none.
Where the two lists meet
Each row pairs a reported component with the shelf that answers it, deepest complaint first.
Electrical System is the largest single complaint on this vehicle at 24.2%, matched by 1 part from 9 brands.
What the complaints table says
NHTSA collects complaints drivers file directly with the agency, and 390 Rainier owners have logged reports totaling 599 mentions.
Electrical System issues hold the largest share at 24.2%, well ahead of Fuel System at 13.4%.
Gasoline complaints follow at 10.4%, with Exterior Lighting close behind at 9.0%.
Power Train and Suspension trail the list at 4.7% and 4.0%.
A high share only means owners mentioned that category often in their reports, not that your own Rainier will see the same issue.
What the parts table says
Drivetrain & Transmission is the deepest shelf here, 106 parts across 3 brands, right where Power Train complaints point.
Suspension & Steering adds another 3 parts, matching a row on the left.
Engine Parts and Exhaust Systems sit outside anything owners reported, at 69 and 17 parts.
Electrical System leads every complaint at 24.2%, and Electrical Parts lists 1 part.
More Buick vehicles we cover
Every Buick we build a fitment guide for. Pick another model to see the parts that fit it.