I Have A 03 Gmc Crew Cab With A Edge Chip With ***., 5" Exhaust, K&n Ram Air. All My Fuilds Are Amsoil, I Had A Trans Flush And Installed A Cast Alum. Deep Pan About 10 K Ago. There Is 99,953 Miles On My Truck. I Do Not Haul Or Plow With This Truck. The Problem I Am Having Is My Shiftin Hibter Light Comes On My Ses Light Is On, My Gear Shifter Lights Dont Have The Line Under P Or R Or D, My Rev Lights Dont Light Up. Some Times I Can Not Get It To Shift Out Of 3 Trd Into Drive. My Mech. Put His Snapon Scanner On It And Cant Clear The Codes. We Replaced The Nbsu And Still The Same Problem. My Truck Went Into A Lock Out Once Before And It Was On Idle. Just Seeing If You Guys Chould Help, I Miss My Truck.:( Thanx A Lot Hank

That was hard to read.

That was hard to read.
Just Think About All The Extra Time Spent Hitting The Shift Key For Every Word:eek:

NSBU, Have a 03 drw 4x4 that did about the same thing. Changed it and problems went away.