Yeah i know stupid question, but i thought 99' and up (new body style) were 65e's but then i heard alot of ppl talking about the 60e's just making sure i had my facts straight. btw the only code i found was M30
03' sierra Z71 slt ecsb 5.3 throttle body coolant bypass, k&n complete intake kit, descreened mass airflow, dynatech long tube headers into dynatech high flow cats with y pipe into magnaflow split duals out the back.
"I call her trish" ..... cause something this sexy and devious has got to be bad for your health....