I shut off the Traction control and I get full power again. I am not on rough or wet roads sometime it does it right after I crank it before I start moving.
These trucks are known to have problems with the front wheel speed sensors that control your 'traction control'. The traction control is actually applying your brakes. Thats why when you turn it off, You can move with no problems. The only way to really know this for sure is to take it to a repair shop and have them diagnose the problem. You can always just replace the front wheel bearing assemblies (they have the wheel speed sensors built in), but that can get pricey.
SOURCE: 2005 GMC Yukon Denali - Traction Control issue
your problem is the front wheel speed sensor. I had the same problem on my 2004 Denali. The GMC dealer felt there was nothing wrong, no codes. I replaced both from wheel sensors (about $75 each on Ebay) and the problem is fixed. The passenger sensor had a crack in it. I saw this solution on a discussion chat. There was a TSB for the 2002 pickup trucks with the same problem. Hope this helps.
SOURCE: Service engine light keeps coming on
need to scan for codes and find problem code some part stores do for free
SOURCE: Truck losing power and service engine soon light on
Like to other guy said, give it a tuneup. Also try SEAFOAM to clean carb up of slug. Also check to make sure the butter fly for the choke has not come loose, causing it the choke it down. Failed choke pull-off.
SOURCE: 03 Yukon Denali Traction Control/ ABS Problems
my 2000 yukon has the traction control light on and the abs light on any anwsers?
SOURCE: abs light and traction control light are on 2003
ok there is a device called a clock spring in the steering..
Remove steering
replace clock spring
clear all error codes..
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