Hummer Forums by Elcova  
Forums - Home
Source Decals

Source Motors
Custom. Accessories.

H2 Accessories
H3 Accessories
Other Vehicles

H2 Source

H2 Member Photos
H2 Owners Map
H2 Classifieds
H2 Photo Gallery
SUT Photo Gallery
H2 Details

H2 Club

Chapters
Application

H3 Source

H3 Member Photos
H3 Classifieds
H3 Photo Gallery
H3 Owners Map
H3 Details
H3T Concept

H1 Source

H1 Member Photos
H1 Classifieds
H1 Photo Gallery
H1 Details

General Info

Hummer Dealers
Contact
Advertise

Sponsored Ads










 


Source Motors - custom. accessories.


Go Back   Hummer Forums by Elcova > Hummer H2 Discussion Forums > General H2 Discussion

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 02-06-2014, 08:44 PM
dna dna is offline
Hummer Veteran
 
Join Date: Jun 2005
Posts: 132
dna is off the scale
Default '03 H2 - reverse not engaging when firing up after cold night?

I live in Calgary, and we have had constant -25 mornings for the last few weeks. About a week ago I noticed that when first firing up the truck in the morning and putting it into reverse, that the truck barely moves back. There was no grinding, instead it was almost like the truck was in neutral but the truck would move back ever so slowly.

After happening everyday, I started testing a few things. First I checked the tranny fluid and it seems full and normal looking but I did smell a faint burnt smell (but I'm not sure either).

I also found that after playing with the shifter (in and out of reverse) that it eventually would 'click' and then I would have full reverse power. After further playing, I found that it isn't based on playing with the shifter, but rather appears to be time related, where after a few minutes of idling the reverse gear clicks in even the first time.

Could this be a sign that the fluid is bad and needs a change, or it is a bigger issue with the trans? Perhaps in the extreme cold, the fluid is not flowing well, so it needs time to warm up? But note that the issue is only with the reverse - all other gears work fine. FYI - I also tried putting it into 4Locked, and it made no different when 1st started in the morning (it again needed those few minutes until reverse engaged).

Any suggestions? I'm thinking of doin a tranny flush, but it is $200 here at the lube shops and if I have a bigger issue then I'd rather save the $200 and get the tranny fixed.

Thanks
Reply With Quote
  #2  
Old 02-08-2014, 05:27 AM
Rico001's Avatar
Rico001 Rico001 is offline
Hummer Expert
 
Join Date: Dec 2007
Location: Panama City Fl
Posts: 571
Rico001 is on a distinguished road
Default Re: '03 H2 - reverse not engaging when firing up after cold night?

Quote:
Originally Posted by dna
I live in Calgary, and we have had constant -25 mornings for the last few weeks. About a week ago I noticed that when first firing up the truck in the morning and putting it into reverse, that the truck barely moves back. There was no grinding, instead it was almost like the truck was in neutral but the truck would move back ever so slowly.

Thanks


I know Florida does not see -25F but it has been very cold here this year and my Chevy pick up does the same thing as you mention.
If I let it warm up for a minute or 2 and it will still shift slower and hold the gears later. This will usually happen for about a mile or 2 and all will be normal.
I would suggest warm it up longer and driving it slowly till it warms fully ~Richard
__________________
Yellow 2003 H2 Luxury ALPHA , 2" lift, Black Helo Maxx8 20 X 10 Rims, Toyo AT Open Country II LT35/12.50/R20 tires, taillight guards and black LE brush guard, KC light bar w/4 Daylights, Recon Smoked roof lights, Sirius/XM Satellite Radio, Kenwood Head Unit , 4 - 6-1/2 inch Polk Audio Speakers, solid billet tailgate handle,HUMMER H2 Ghost lights ib front doors
Reply With Quote
  #3  
Old 02-09-2014, 07:43 AM
glennf1 glennf1 is offline
Hummer Veteran
 
Join Date: Nov 2011
Posts: 163
glennf1 is on a distinguished road
Default Re: '03 H2 - reverse not engaging when firing up after cold night?

At the very least, you need to switch the tranny and transfer case over to Dexron-VI and drain out the Dexron-III, especially in those temps.
Reply With Quote
  #4  
Old 02-14-2014, 08:00 PM
jmudler jmudler is offline
Hummer Veteran
 
Join Date: May 2013
Posts: 61
jmudler is on a distinguished road
Default Re: '03 H2 - reverse not engaging when firing up after cold night?

I cant switch out of 4lo or 4hi if it is below 25 unless I warm everything up in 4hi for a mile or two.
Reply With Quote
  #5  
Old 02-15-2014, 03:28 PM
H2R's Avatar
H2R H2R is offline
Hummer Professional
 
Join Date: Oct 2007
Posts: 267
H2R is on a distinguished road
Default Re: '03 H2 - reverse not engaging when firing up after cold night?

Change your filter and fluid completely and go from there.
__________________
2003 H2 SUV Supercharged SHOW TRUCK
2013 Sierra Denali
2012 Yukon Denali
1974 Corvette conv. (454ci)
31ft Gulf Craft Boat
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT +1. The time now is 08:02 PM.


Powered by vBulletin Version 3.0.7
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.