1999 GMC Sierra 1500 Pickup Owner's Manual - Page 86

CAUTION Pluggingthecordintoanungroundedoutletcouldcauseanelectrical shock. Also, thewrongkind of extensioncordcouldoverheatand causeafire. You couldbeseriouslyinjured.Plugthecordintoa properly grounded three-prong 110-volt outlet. If thecordwon'treach, 15 useaheavy-dutythree-prongextensioncordratedforatleast amps. 1 NOTICE Afteryou'veusedtheblockheater,besure to storethecordin manneritwas,tohelpkeepitawayfrommovingengineparts. don't, it could be tornanddamaged. t h If YOU 1 ~p@&%? How long should you keep tne MOCK neater plugged in? Theanswerdepends f thison the weather, the kind o oil ,you have, and some other things. Follow chart. , . ENGINE BLOCK HEATER USAGE" Viscosity . 32' $0 0°F 0' to -10°F 'Belaw -10°F Grade Oil (0" to &I C) S' (-18' to. -23°C) (B&w -23°C) SAE Not Two HoursEight I OW-30 or Overnight Hours Required . . SAE . Two Hours Eight Nit . 15W-40 or f3equired Overnight Hours * The times listed are minimum. times. It wil not harm &her the block heater or the vehicle to leave it plugged in longer than the times stated. T 157 O For best results in cold weather, use Number I-D diesel fuel or a "winterized" Number 2-D fuel. ' ' ' ' 3 I f Your Diesel Engine Won't-Start If you'verunoutoffuel,look -at "Running Out Of Fuel"(see''DieselFuel RequirementsandFuelSystem" m the Index). If you're not out of fuel, and your engine won't start, do this: Turn y6ur ignition key to Run. .Make sure that the GLOW PLUGS light is out. Then turn the ignition key to Stkrt while you 'push the accelerator pedal down. 2-1 8