Blaney’s car, which placed second, violated Section 184.108.40.206.b in the rulebook, which states all filler panels must remain permanently attached for the entire event.
Blaney was docked 20 driver and owner points. Crew chief Jeremy Bullins was fined $50,000 and car chief Kirk Almquist was suspended for two points races.
Blaney remains ninth in the standings.
There was not an immediate response from Team Penske on if it would appeal the penalty.
Jones’ No. 20, which placed fourth, violated Sections 20.4.h and 220.127.116.11.b in the rulebook, which states that air cannot pass from one area of the vehicle interior to another and the vehicle package tray must remain flat and straight, front to back, with one break.
Crew chief Chris Gayle was fined $50,000 and car chief Jason Overstreet was suspended for two points races.
The team also was docked 20 driver and owner points. Jones left Texas 13th in the standings. He is now tied with Austin Dillon for 15th.
Joe Gibbs Racing will not appeal the penalty.
Those penalties are in addition to the L1 penalty against Kevin Harvick’s team.
In the Camping World Truck Series, NASCAR issued a penalty against NextGen Motorsports for a ballast falling off Brennan Poole‘s No. 35 truck in practice at Texas.
Crew chief Ryan Bell, truck chief Jerry Kennedy and mechanic Patrick Magee have been suspended for the next three points races, which would include the 2019 opener at Daytona.
The team is not entered in this weekend’s race in Phoenix.
NASCAR also issued indefinite suspensions to Vincent Shull and Doug Campbell for violating the its substance abuse policy.