1998 GMC Sonoma throttle body surges

1998 GMC SONOMA
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SUE MINCE
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Engine Performance problem
1998 GMC Sonoma 6 cyl Two Wheel Drive Automatic

motor starts then surges gas heavy then light. you can,see this with air cleaner off tried,new ECM no change, motor will do the same thing. porm form 1995 gmc 4.3 throttle,delco 9929 BJWN is only one that's works
I have 4 ASE,s have looking for vacuums leaks and all the small thing's
Mar 13, 2010 at 7:46 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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