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An ECU is essentially the brain for a 1999 GMC Suburban. Without an ECU the truck will not be able to operate at all.
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∙ 9y ago
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Why is my 1999 gmc suburban Stuck in 4 wheel drive low?
My 99 gmc suburban is stuck in 4 wheel drice low
How do you repair rear brakes on 99 GMC suburban?
replace rear brake hydrolics
Oil change on 99 GMC suburban?
What do you want to know about its oul changes? When, how, the cost...?
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The Yukon is a GMC and the Suburban is a Chevrolet.
On a 1999 gmc 1500 suburban 5.7l where is the ac condensor?
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Suburban
