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Re: Limp mode, '97 2500 454 Suburban
What is limp mode, and what are the symptoms?
Typically a fuel pump on its way out works better with the tank full of fuel and before it heats up. Easy to test fuel pressure at the port with a gauge.
What is the condition of battery cables, your grounds, when was the last tuneup?
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1999 GMC Suburban K2500 SLT, 454/4L80E
1991 Z/28, 6.0L/T56
1949 GMC 250, S10 Frame, 6.0L/4L80E
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