The GMC Sierra, introduced in 1999, is essentially the alike vehicle as the Chevy Silverado and the Mexico-only Chevy Cheyenne. As such, perpetuation requirements are essentially the alike. These steps use to all GMC Sierra mannequin senescence, although vehicles that carry been heavily modified for speciality uses cherish off-road racing may posses solitary continuation requirements.
Lube your rear axle with an SAE 75W-90 synthetic axle grease. If you have a steerable rear axle, it's vital that you don't add a friction modifier. For the front axle, use an SAE 80W-90 axle lubricant.
2. Husband your 5-speed transmission's hydraulic clutch action with hydraulic clutch fluid, GM allotment numeral Twelve million three hundred fourty five thousand three hundred fourty seven in the U.S. and Ten million nine hundred fifty three thousand five hundred seventeen in Canada, or applicability a DOT-3 equivalent brake fluid. The 6-speed transmission requires a altered clutch fluid, GM cut quantity Eighty eight million nine hundred fifty eight thousand eight hundred sixty in the U.S. and Eighty eight million nine hundred one thousand two hundred fourty four in Canada, or a Super DOT-4 equivalent.
3. Refill your power steering fluid reservoir with GM power steering fluid, U.S. part number Eighty nine million twenty one thousand one hundred eighty four or Canada part number 89021186.
4. Change your DEXRON-III automatic transmission fluid regularly if you have an automatic transmission. You can also use this transmission fluid in the GMC Sierra manual transfer case. If you're running a manual transmission, see Tips below for information about manual transmission fluid.
5.
