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2000 GMC Yukon SLT 5.3L Poor Idle Quality, hard start when cold
The complaint is that they have to pump the gas when it is cold to start it. When testing we found that you had to hold the throttle open for it to start when cold. In checking the data stream on our Modis we found the Idle Air Temperature (this sensor is part...
FIX posted 6/24/2009
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Message Closed w/FIX
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9 Replies Received
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Related Documents & Media | VIN | 1GKEK13T5Y |
| Engine | 5.3 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Hard Start When Cold |
| Occurs | Always, Cold |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
Message Closed w/FIX
Vehicle Data
2000 GMC Yukon SLT
| VIN | 1GKEK13T5Y |
| Engine | 5.3 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Hard Start When Cold |
| Occurs | Always, Cold |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
Video