Welcome to the GMTC - Chevy Truck Forum.
Chevy Truck Forum

GM Truck Club is the premier Chevy Truck Forum & GMC Truck Forum online ~ Since 2004.
Registered Users do not see the above ads. Register Today ~ It's Free and gives access to the whole website.
+ Reply to Thread
Results 1 to 4 of 4
  1. 08-15-2007, 04:55 PM #1
    Easy Xjer
    Easy Xjer is offline
    Jr. Apprentice Easy Xjer is a glorious beacon of light
    Easy Xjer's Avatar
    Join Date
    Aug 2007
    Posts
    16
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Cruise/trans

    98 Silverado K2500 Here is the problem I have. When puilling a hill in cruise the trans will downshift almost immediatley. The same hill under foot control I can pull all the way with no loss of speed and no downshift. What can I do to adjust this? Thanks
    Reply With Quote Reply With Quote
  2. 08-15-2007, 05:24 PM #2
    GaryL
    GaryL is offline
    Moderator
    GaryL is a glorious beacon of light
    GaryL's Avatar
    Join Date
    Mar 2006
    Location
    The Colony, Tx
    Posts
    1,184
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    A friend of mine had a 99 2500 that did the same thing. He would just kick the cruise off when going up and down a lot of hills (which was a pita since our deer lease is in "the Texas Hill Country"). Since it is all electronic, I don't think there are any adjustments.
    Gary

    99 K 1500 Suburban
    78 Silverado Big 10 w/factory 454
    1977 Formula
    1976 Trans Am
    1980 Honda CB900 Custom
    Reply With Quote Reply With Quote
  3. 08-15-2007, 07:50 PM #3
    RichardG
    RichardG is offline
    Jr. Apprentice RichardG is a glorious beacon of light
    RichardG's Avatar
    Join Date
    Jul 2006
    Location
    Boondocks of Oregon
    Posts
    15
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    My '99 2500 with 4L80E trans did the same thing; drove me nuts going over a freeway overpass and it would downshift. I would put it in tow/haul to defeat this until I changed to an Allison. I don't think there is a factory adjustment for this but most of the aftermarket performance programmers have adjustments you can make to the shift firmness. Maybe this would be an option.
    Last edited by RichardG; 08-15-2007 at 07:53 PM. Reason: add words
    Reply With Quote Reply With Quote
  4. 08-16-2007, 07:59 PM #4
    Easy Xjer
    Easy Xjer is offline
    Jr. Apprentice Easy Xjer is a glorious beacon of light
    Easy Xjer's Avatar
    Join Date
    Aug 2007
    Posts
    16
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    I installed the HYpertech power programmer III hoping to cure it it did not. The programming is pre set by hypertech you can not set it at your specs.
    Reply With Quote Reply With Quote

 
« Previous Thread | Next Thread »

Similar Threads

  1. Cruise Control add-on?
    By jamesdeanj in forum Chevy Silverado Forum (GMC Sierra)
    Replies: 6
    Last Post: 04-19-2010, 08:47 AM
  2. cruise control
    By TheUnit in forum Chevy Suburban Forum (GMC Yukon XL)
    Replies: 11
    Last Post: 12-29-2009, 09:21 PM
  3. cruise not working
    By CG-ITS in forum Chevy Tahoe Forum (GMC Yukon, Cadillac Escalade)
    Replies: 6
    Last Post: 11-02-2009, 01:22 PM
  4. Afermarket Cruise
    By lancer in forum General Chevy Tech Q&A
    Replies: 2
    Last Post: 08-25-2009, 08:11 PM
  5. those without cruise
    By jbhofc in forum Audio / Video Electrical
    Replies: 2
    Last Post: 03-15-2008, 06:03 PM

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts

Forum Rules

Powered by vBulletin® Version 4.1.7
Copyright © 2012 vBulletin Solutions, Inc. All rights reserved.
Copyright 2004-2011. This site is for entertainment purposes only and is not associated with General Motors.
All times are GMT -5. The time now is 03:54 PM.
vBulletin 4.0 skin by CompleteVB