Rev limiter in park

JAVINDRA

Original poster
Member
May 27, 2018
71
brampton ontario canada
Just curious I was checking my 03 GMC Envoy idle after tuneup and noticed that when reving the engine from idle in park it struggled to get up to 3000 rpm. I checked online and found out that there is a rev limiter on these engines (4.2 l) and not to worry that this is normal.
 

FlyingFischer

Member
Dec 4, 2011
254
Spokane, WA
That is correct. They have a rev limiter while in park. I believe there is a way to trick it so you can rev it park or neutral, not 100% sure though.
 

xavierny25

Member
Mar 16, 2014
6,323
Staten Island, N.Y
As you heard and like @FlyingFischer said it is normal on these trucks. It can be tuned out so you have no limit. @limequat is our less expensive tuner on the site and does a great job. If you'd like to get it done he can also bring new life to your truck via a tune. It really puts some pep in it.
 

Mike534x

Member
Apr 9, 2012
894
If you really wanted to get past the rev limiter without a tune (do so at your own risk obviously) is to move the shifter so its in the middle of Park and Reverse. You know you did this right when the square box that is on the selected gear in PRND "disappears" and should be able to freely rev the engine past the rev limiter. Of course, the risk is apparent if you tried putting it back into park/gear while freely revving the engine will tear up the tranny before the idle settles back down.
 

Mooseman

Moderator
Dec 4, 2011
25,257
Ottawa, ON
Yes.
 

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