Echo
Member
I'm putting an LQ9 6.0 from a 2003 Escalade (8th Vin N) in my 2002 Tahoe. The L59 5.3 in it has 280k on it, and its making some ungodly noises that sound a lot like bad rod bearings or crankshaft bearings. Keep in mind, i'm no expert mechanic, i'm just quite mechanically inclined. I've rebuilt 2.2 and 4.8 engines before, and swapped out many others. However, i've never done a 6.0 swap.
I keep finding a lot of conflicting information in regard to PCM flashing and compatibility. I'm trying to find out if its possible to flash the 02 5.3 PCM for the 6.0 engine, or alternatively, find a compatible 6.0 PCM to flash with my 02 Tahoe VIN.
I don't think i would need a new wiring harness, most information seems to point to 100% compatibility for that, but i still keep finding some accounts of people having to swap those as well.
If someone could point me in the right direction to figure this out, i would greatly appreciate it.
Any tips or advice are welcome.
I keep finding a lot of conflicting information in regard to PCM flashing and compatibility. I'm trying to find out if its possible to flash the 02 5.3 PCM for the 6.0 engine, or alternatively, find a compatible 6.0 PCM to flash with my 02 Tahoe VIN.
I don't think i would need a new wiring harness, most information seems to point to 100% compatibility for that, but i still keep finding some accounts of people having to swap those as well.
If someone could point me in the right direction to figure this out, i would greatly appreciate it.
Any tips or advice are welcome.