2000 GMC Jimmy low gas mileage It,s surges when take-of

2000 GMC JIMMY
10,500 MILES • 6 CYL • 4WD • AUTOMATIC
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LOREEN BIRD
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At surges at low speed we checked and got 13 miles per gallon Not loaded or pulling anything
Runs good on highway
Jun 22, 2010 at 10:10 AM
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HMAC300
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have the engine scanned for codes you may have one. You also mya have a broken or cracked injector spider inside the manifold.
Jun 27, 2010 at 8:31 PM