Hoping someone can tell me if an engine from a 2003 Envoy will interchange into a 2006 Envoy. I am more than willing to change over what is needed as long as it doesn't involve removing the head, crank, cams, etc. Any help is greatly appreciated.
03 to 06 Engine Swap
- Thread starter skioguy68
- Start date
Mike534x
Member
- Apr 9, 2012
- 1,003
It'll be a complicated mission and a pain if you think the hassle is worth it.
The biggest hurtle is that the reluctor is a 58x in 06 while 02-05 were 24x. Heads are a little bit different on the 06 as well. Not including that you need an 02-05 wiring harness + TCM+ PCM to make the engine work in the newer truck.
@limequat May know....but you would be better off getting an 06-09 engine that is plug and play.
The biggest hurtle is that the reluctor is a 58x in 06 while 02-05 were 24x. Heads are a little bit different on the 06 as well. Not including that you need an 02-05 wiring harness + TCM+ PCM to make the engine work in the newer truck.
@limequat May know....but you would be better off getting an 06-09 engine that is plug and play.
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Mike534x
Member
- Apr 9, 2012
- 1,003
They used a 24 up until then? Wow. Thought they did the change around the time the 5.3 was changed to 58.
Welcome to GMT Nation, @skioguy68 ...
As a Trained Auto Mechanic... You should feel right at home when performing this Swap. And fallowing the "Commutative Theory of Addition and Multiplication"... The attached Link discusses this same Swap ...but in the Reverse Years... so the data there will still be valuable in figuring out what to look for between the two Model Years because it literally ...works both ways:
https://forums.trailvoy.com/showthread.php?t=67605
Unless you have access to a Shop Lift to make things easier... If you are not junking or selling the Old Motor, I would recommend removing the Old Engine Head prior to lifting out this motor, as it will give you much easier access to the Two Top Transmission Bolts that you would ordinarily have to struggle mightily with to access over the "hump" of the 4L60E Transmission.
If any PCM "Tuning Entanglements" are involved... send a PM to either @limequat or Kelly@PCMofNC as they have intimate knowledge of the GMT360 Platform and can offer advice on any PCM Issues and are able to perform Professional Tunes for reasonable fees.
Your two primary allies for obtaining information about the best ways to get this job done with the least fanfare are @Mooseman and @m.mcmillen .
As a Trained Auto Mechanic... You should feel right at home when performing this Swap. And fallowing the "Commutative Theory of Addition and Multiplication"... The attached Link discusses this same Swap ...but in the Reverse Years... so the data there will still be valuable in figuring out what to look for between the two Model Years because it literally ...works both ways:
https://forums.trailvoy.com/showthread.php?t=67605
Unless you have access to a Shop Lift to make things easier... If you are not junking or selling the Old Motor, I would recommend removing the Old Engine Head prior to lifting out this motor, as it will give you much easier access to the Two Top Transmission Bolts that you would ordinarily have to struggle mightily with to access over the "hump" of the 4L60E Transmission.
If any PCM "Tuning Entanglements" are involved... send a PM to either @limequat or Kelly@PCMofNC as they have intimate knowledge of the GMT360 Platform and can offer advice on any PCM Issues and are able to perform Professional Tunes for reasonable fees.
Your two primary allies for obtaining information about the best ways to get this job done with the least fanfare are @Mooseman and @m.mcmillen .
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limequat
Member
- Dec 8, 2011
- 520
02-05 7x, P10 PCM
06-07 7x, P12 PCM
08-09 58, E67 ECM/T42 TCM
2003 will go into a 2006 as long as the 2006 PCM and harness is retained. You'll have to move the ECT sensor, swap fuel rails, and swap your AIR solenoid over. Otherwise bolt in.
06-07 7x, P12 PCM
08-09 58, E67 ECM/T42 TCM
2003 will go into a 2006 as long as the 2006 PCM and harness is retained. You'll have to move the ECT sensor, swap fuel rails, and swap your AIR solenoid over. Otherwise bolt in.
Am I understanding this right - an '02-05 will work in an 07 as long as you swap some parts over from the 07 to the 02-05?
Mooseman
Moderator