C 2500 Truck 2WD V8-379 6.2L DSL VIN J FI (1992)
Tachometer: Customer Interest
Instruments - Tachometer Accuracy
Group Ref.: Chassis/Body Electrical
Bulletin No.: 368305
Date: February, 1994
INFORMATION
SUBJECT:
TACHOMETER ACCURACY
MODELS:
1992-94 CHEVROLET AND GMC C/K TRUCKS WITH A TACHOMETER (RPO U16)
The tachometer used in C/K trucks with RPO U16 is calibrated so that the first mark shown on the tachometer display is 500 RPM. At idle, this may
leave the impression that engine speed is too low or that the tachometer is inaccurate when neither is the case.
If engine idle speed is normal and the tachometer appears to be correct at engine speeds above idle, the tachometer is operating as designed and no
attempt should be made to alter the vehicle tachometer reading at idle.
