why does u0 105 UO106 come up 2005 Chevy Silverado Duramax

Question

When driving my truck when I get up to 2000 RPMs you won't go any farther so then I check the code came up you are 106 you 0105

Answer 1

U0105 Lost communication with fuel injector control module

U0106 Lost communication with glow plug control module

Will not go any faster than 2500 RPM , the code you have are U code, you would need to check for P code that would be stored, The duramax has a popular  problem with the FICM wire chaffing on the alternator that area should be check