My '04 denali will not start consistently. after running hard for any period of time.

10

Asked by Dec 31, 2013 at 10:56 AM about the 2004 GMC Yukon XL Denali 4WD

Question type: Maintenance & Repair

tried replacing battery and it still happened. Seems like it happens after a "substantial drive" say 50 miles+. Power is good, but it won't even turn over. Help!

2 Answers

...I'm going to go ahead and say that it's the MAIN ground...the reason that I say this is your ignition relay is not gonna stay engaged if it's got only 10.5 volts to keep the contacts hangin' in there...so take the black battery cable, where it attaches to the chassis/ground and wirebrush the chassis and with a pliers hold the lug and wirebrush that too....you see what happens is the 300 or more AMPS requirement of the startermotor develops a layer of "semi-conductor" of the dis-similar metals in a firey-blue spark...okay for the first dozen times, but then the reduced voltage affects the delicate components...such as the ECU, ignition and fuel relays~

10

Thank you for the info! I am going to apply the recommendation tomorrow and will advise result.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Search GMC Yukon XL Questions

GMC Yukon XL Experts

#1 FordNut
FordNut
Reputation 340
#2 TK76
TK76
Reputation 270
#3 kbro
kbro
Reputation 170
View All

Related Models For Sale

Used Chevrolet Suburban
639 Great Deals out of 21,049 listings starting at $2,095
Used GMC Yukon
498 Great Deals out of 16,962 listings starting at $1,777
Used Cadillac Escalade ESV
155 Great Deals out of 5,684 listings starting at $3,994
Used Chevrolet Tahoe
996 Great Deals out of 30,891 listings starting at $1,495
Used Cadillac Escalade
337 Great Deals out of 10,629 listings starting at $1,800
Used Ford Expedition
565 Great Deals out of 21,932 listings starting at $1,100
Used GMC Sierra 2500HD
132 Great Deals out of 13,438 listings starting at $3,895
Used GMC Sierra 1500
1,083 Great Deals out of 56,548 listings starting at $1,600
Used Lincoln Navigator
115 Great Deals out of 5,816 listings starting at $1,995
Used Toyota Sequoia
150 Great Deals out of 6,584 listings starting at $2,477
Used Ford F-150
3,132 Great Deals out of 200,437 listings starting at $1,273
Used Chevrolet Silverado 1500
2,472 Great Deals out of 145,720 listings starting at $1,800
Used Cadillac Escalade EXT
37 Great Deals out of 716 listings starting at $4,000
Used Nissan Armada
169 Great Deals out of 6,506 listings starting at $3,300

Used Cars For Sale

2017 GMC Yukon XL Denali 4WD For Sale
1,372 listings starting at $65,017
2016 GMC Yukon XL Denali 4WD For Sale
14 Great Deals out of 1,661 listings starting at $46,999
2015 GMC Yukon XL Denali 4WD For Sale
12 Great Deals out of 377 listings starting at $42,995
2014 GMC Yukon XL Denali 4WD For Sale
7 Great Deals out of 160 listings starting at $29,995
2013 GMC Yukon XL Denali 4WD For Sale
18 Great Deals out of 301 listings starting at $23,600