GMC Truck Forum banner

1 - 4 of 4 Posts

·
Registered
Joined
·
101 Posts
Discussion Starter #1
I took my girlfriend and her grandmother to dinner tonight, and on the way there, I noticed my truck wasn't shifting into overdrive. Checked my shifter, speed, tow/haul button, nothing. I never got over 40 MPH. On the way home after we dropped off her grandmother, we hit the interstate. Still no shifting, 70 MPH at 4500 RPM, no shift. All the other gears were fine, like nothing's wrong. Get to third and just rev, rev, rev. Please help me.:bawl:

btw, it's a 2001 Z-71 Auto.
 

·
UH6TDRVR
Joined
·
148 Posts
speed sensor in the tranny. Mine went out and did the same thing....hope you figured it out since this is over a year old.
 

·
Registered
Joined
·
19,437 Posts
Mine was doing something similar a week or two ago...change the filter and fluid and shes shifting like a champ now
 
1 - 4 of 4 Posts
Top