Helping a friend with their 2009 suburban that had a stuck cylinder 6 DOD lifter. Pulled the head replaced lifters cylinders 4 and 6 with HL124's and replaced the VLOM. Deactivated the DOD today in the tune and now the idle surges, dies in park, and you have to floor the peddle to get it to start. It doe not die in gear.
Cranking compression in 4 is 195 and 6 is 185
So you replaced the DoD lifter with a non DoD lifter?
If you did, you can't do that. The camshaft lobes are different on the DoD lifters and require the same DoD lifter be installed again. The camshaft must be swapped out if you want to run regular lifters.
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
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