GMC Power Step Assist not working - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


GMC/Chevrolet Truck/SUV When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made.

Reply
 
 
 
Thread Tools Search this Thread
Old 07-29-2014, 08:05 PM   #1
Junior Member
Thread Starter
 
Join Date: Jul 2014
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
MonoAnt is on a distinguished road
Default GMC Power Step Assist not working

Hi guys, i have a 08 gmc yukon denali with power steps. when i bought the vehicle they did not work, didnt hear the motors working at all. Dealer said the problem was the module. Long story short i pulled the module out and noticed the red/blk pin was corroded and broke off, i went online and bought a used one and still nothing working. checked for power at the red/blk pin and it reads 12+ volts but nothing still nothing works. BTW i tried the unlock procedure still nothing. ANY HELP WOULD BE GREAT. Does this used mod. need to be programmed?
MonoAnt is offline   Reply With Quote
Old 07-30-2014, 06:31 AM   #2
Senior Member
True Car Nut
 
jwfirebird's Avatar
 
Join Date: Dec 2009
Location: western,ny state
Posts: 9,616
Thanked 563 Times in 481 Posts
jwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond repute
Default

the plug that it plugs into is likely corroded too and needs cleaned up if what you replaced was
jwfirebird is offline   Reply With Quote
Old 07-30-2014, 01:38 PM   #3
Junior Member
Thread Starter
 
Join Date: Jul 2014
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
MonoAnt is on a distinguished road
Default

Quote:
Originally Posted by jwfirebird View Post
the plug that it plugs into is likely corroded too and needs cleaned up if what you replaced was
i cleaned the connection and i put my meter on the power and im reading 12+volts
MonoAnt is offline   Reply With Quote
Old 07-30-2014, 03:13 PM   #4
Senior Member
True Car Nut
 
jwfirebird's Avatar
 
Join Date: Dec 2009
Location: western,ny state
Posts: 9,616
Thanked 563 Times in 481 Posts
jwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond repute
Default

i dont have access to diagrams but there likely is a ground and other thing that need to be good contact to work
jwfirebird is offline   Reply With Quote
Old 07-30-2014, 04:53 PM   #5
Junior Member
Thread Starter
 
Join Date: Jul 2014
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
MonoAnt is on a distinguished road
Default

it wont even let me get into the module with my scanner, its like to the vehicle the module doesnt even exist. but im getting power to the mod. but nothing out. im wondering if it needs to be programmed somehow because it was used on another vehicle.
MonoAnt is offline   Reply With Quote
Old 07-31-2014, 07:28 AM   #6
Senior Member
True Car Nut
 
jwfirebird's Avatar
 
Join Date: Dec 2009
Location: western,ny state
Posts: 9,616
Thanked 563 Times in 481 Posts
jwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond repute
Default

in order to have a module that talks to the network you have to have good power, ground, and one or two serial wires from the cars network. is not just a matter of having 12v
jwfirebird is offline   Reply With Quote
Old 08-01-2014, 05:01 PM   #7
Junior Member
Thread Starter
 
Join Date: Jul 2014
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
MonoAnt is on a distinguished road
Default

Quote:
Originally Posted by jwfirebird View Post
in order to have a module that talks to the network you have to have good power, ground, and one or two serial wires from the cars network. is not just a matter of having 12v
i checked the power and ground through the harness and it seems good, because the module is used will it work with my vehicle or are they vin locked or need programming?
MonoAnt is offline   Reply With Quote
Old 08-01-2014, 07:33 PM   #8
Senior Member
Posts like a Turbo
 
chevy82's Avatar
 
Join Date: Jan 2014
Location: Missouri
Posts: 396
Thanked 99 Times in 84 Posts
chevy82 is a glorious beacon of lightchevy82 is a glorious beacon of lightchevy82 is a glorious beacon of lightchevy82 is a glorious beacon of lightchevy82 is a glorious beacon of lightchevy82 is a glorious beacon of light
Default

Even though your meter shows 12 volts, your meter isnt actually pulling a load on the circuit. Get halogen bulb with alligator clips and check voltage that way. A good bright light will show a good circuit.
chevy82 is offline   Reply With Quote
Old 08-08-2014, 02:02 PM   #9
Junior Member
Thread Starter
 
Join Date: Jul 2014
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
MonoAnt is on a distinguished road
Default

wired in new pigtail, all is good
MonoAnt is offline   Reply With Quote
Old 08-09-2014, 08:22 AM   #10
Senior Member
True Car Nut
 
jwfirebird's Avatar
 
Join Date: Dec 2009
Location: western,ny state
Posts: 9,616
Thanked 563 Times in 481 Posts
jwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond repute
Default

thanks for updating your fix
jwfirebird is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Video/Step By Step Instruction On How to Change Power Steering Pump In '05 Impala 3.8 GM-Ryder Chevrolet 4 06-29-2014 08:19 AM
Picture Posting: Step By Step Guidelines harofreak00 Your Ride: GM Pictures & Videos 0 11-11-2006 10:54 PM
putin' my moulding on *step by step* ga93sle Your Ride: GM Pictures & Videos 16 12-08-2005 10:54 PM
Where can i get step by step instructions on engine swaps??? killer_cr80r Lounge 8 04-03-2004 08:16 PM
Step-by-Step Motor Mount Sleeve Removal for Belt Replacement evilsaint 1992-1999 2 10-22-2003 02:09 AM


Tags
cadillac, gmc, power assist steps, runningboards, yukon

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 02:49 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.