Question about 2004 GMC Envoy
I have no 3rd or drive. If I manually shift I can get there.
I had this exact problem on my 2005 5.3L Suburban... It would shift into 1 and 2 and reverse, but not 3 and 4.
I took it into a transmission shop, and he said the 3-4 shift solenoid was burned up. Wanted 1500 to fix it. Far from home, so I have to pay it.
Posted on May 31, 2009
The sift solenoids are located on the valve body inside the transmission.
The transmission pan has to be removed to gain access the the valve body. Once the pan is removed the valve body is in plain sight.
Removal of the transmission filter will grant you a clearer view as well.
This is a 4L60E transmission, in the event you have not purchased the solenoids.
Posted on Mar 03, 2010
check or replace your thottle position sensor tps that trans needs to know where the throttle is to shift if it is bad it will do as you say wont shift to third
another telltale is it will act like it goes into lockup when shifting into reverse and stall the engine
Posted on Feb 19, 2011
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