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1989 GMC V2500 Suburban Sierra Classic 5.7L Poor Idle Quality, OPEN LOOP MOST TIMES
This thing is really weird - the computer does not seem to
want to go into closed loop and once in closed loop doesnot
stay in it very long.
FIX posted 3/9/1998
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Message Closed w/FIX
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Related Documents & Media 
| VIN | 1GKGV26K4K |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / TBI |
| Emissions | US FED/CAL EMISSIONS |
| Symptoms | Poor Idle Quality, Open Loop Most Times |
| Occurs | Cold, Hot, Under Load, Cruise, Idle, Intermittently |
Message Closed w/FIX
Vehicle Data
1989 GMC V2500 Suburban Sierra Classic
| VIN | 1GKGV26K4K |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / TBI |
| Emissions | US FED/CAL EMISSIONS |
| Symptoms | Poor Idle Quality, Open Loop Most Times |
| Occurs | Cold, Hot, Under Load, Cruise, Idle, Intermittently |
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