1999 Chevrolet C1500 Suburban 5.7L Speedometer
The speedo reads 52 when going 60. We checked rear end ratio 373. found it is the stock ratio. We checked to make sure that the correct tire size was in the ECM which it was. So we finally reflashed the ECM and it still didn't fix the problem. Any ideas would ...
FIX posted 4/24/2007
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Message Closed w/FIX
Vehicle Data1999 Chevrolet C1500 Suburban
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Message Closed w/FIX
Vehicle Data
1999 Chevrolet C1500 Suburban
VIN | 1GNEC16R7X |
Engine | 5.7 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI |
Affected | Speedometer |
Conditions | Speedometer Reads Slow |