1998 Buick Riviera Owner's Manual - Page 226

8. Then replace the pressure cap. At any time during this procedure if coolant begins to flow outof the filler neck, reinstall the pressure cap. Be sure the arrows onthe pressure cap line up like this. I a Tire Goes Flat f It's unusual for a tire to "blow out" while you're driving, especially if you maintain your tires properly. air goes If out of a tire, it's much more likely to leak out slowly. But if you should ever have a "blowout," are a few here tips about what to expect and what to do: If a front tire fails, the flat tire willcreate a drag that pulls the vehicle toward that side. Take your off the foot accelerator pedal and grip the steering wheel y . M Steer to maintain lane position, and then gently brake to a stop well out the traffic lane. of A rear blowout, particularly on a curve, acts much a like skid and may require same correction you'd use in a the skid. In any rear blowout, remove your foot from the accelerator pedal. Get vehicle under control by the steering the way you want vehicle to go.It may be the very bumpy and noisy, but you can still steer. Gently brake to a stop -- well off the road if possible. If a tire goes flat, the next part shows how to use your jacking equipment to change a tire safely. flat 5-21