Search results
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Why are 5.3 dogs?
Intake Manifold Leak, 2003 Yukon 5.3 Would the leak cause the power loss and poor mpg (9-10 mpg)? ---------- Post added at 09:00 PM ---------- Previous post was at 08:58 PM ---------- What type MPG should I expect with the 5.3? I was hoping for 15-17 mpg, maybe 15 towing the trailer.- DarylinB
- Post #33
- Forum: Performance
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Why are 5.3 dogs?
I have an 03 Yukon and was told by my mechanic that the intake manifold was leaking causing it to lose power. It's fine around town but when I hook up my trailer (2800#) it really drops off the power. Anyone else have this problem? Pulling the trailer I'm getting 9-10 mpg. I bought it because I...- DarylinB
- Post #30
- Forum: Performance
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Intake Manifold replacement
Has anyone replaced the intake manifold because of leaking causing power loss?- DarylinB
- Thread
- Replies: 1
- Forum: General Discussion
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Oil pressure guage
I have a 2003 Yukon and when I start it, the oil pressure guage goes to 80# right away and stays there. Would that mean the sender is bad or the guage or what? The Yukon has 78K miles on it and runs great.
