GM 19178430 Rear Leveling Shock Absorber Assembly

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To remove and install struts on your vehicle, you should follow these steps. Start by disconnecting the negative battery cable. Then, raise and support the vehicle securely so that it is supported by the frame with control arms hanging free. Remove the wheel and tire assembly. On Eldorado and Seville models equipped with this device, take off the electrical connector from the top of the strut. For Deville and Fleetwood Models, slacken the strut housing tie bar through bolts at each end. On Eldorado and Seville models having a 4.6L Engine only, get out road sensing suspension position sensor from lower control arm. Take off nuts attaching top of strut to body. In case there are anti-lock brakes on DeVille and Fleetwood models, disconnect wheel speed sensor/bracket from strut bracket. Also remove stabilizer link from strut linking pulled out brake line bracket for Eldorado and Seville models. Lastly, remove strut-to-knuckle bolts while supporting knuckle with wire to prevent damage to ball joint or halfshaft. To install new one attach it to knuckle using bolts/nuts then attach it to body with nuts for DeVille/Fleetwood Models place washer/tie bar before installing strut-to-body nuts. Install brake line bracket onto strut. On Eldorado/Seville link stabilizer back again through removing same (Eld) or brake line bracket on sturt (Sev). In addition put road sensing suspension sensor into lower control arm plus connect electrical connector at top of stut if equipped (ElD). Tighten down; Strut-to-Knuckle Bolts-140 ft-lbs(190Nm), Strut-to-Body Nuts-18 ft-lbs(24 Nm), Stabilizer Link Nuts-48ft lbs.(65Nm), Tie Bar Through Bolts-20ft-lb(27Nm). Finally, install the wheel and tire assembly, lower the vehicle, and check and adjust the front wheel alignment as necessary. To overhaul strut assembly first mount it in a strut compressor tool like J-34013 or an equivalent. Twist the compression forcing screw up to spring compressing slightly. A T-50 Torx bit should be used to prevent turning of strut shaft while nut at top of strut shaft is removed. Release compressor screw letting strut shaft guide out from assembly. Continue to release compressor screw until strut and spring can be removed. To install, mount the strut in the compressor tool, using clamping tool J-34013-20 or an equivalent to hold the strut shaft in place. Install spring onto upper frame where flat on upper spring seat faces outward from centerline of car or same direction as steering knuckle mounting flange. If bearing was removed from upper spring seat reinstall it in same position before attaching it to shock absorber mount. Now turn compressing screw pushing through top part of shock absorber body and guide out a rod only if needed use tool J-34013-38 or its equivalent. Mount the washer and nut when you are able to see the threads of the strut shaft through the top of the strut assembly. Now, remove clamping tool J-34013-20 from the strut shaft and tighten down the nut for the strut shaft to 55 ft lbs (75 Nm) while holding onto it with a T-50 Torx bit. Until you finally take off this compressor tool, which is mounted on that strut assembly, please, remember not to switch off anything about that linkage rod.

Start by raising and safely supporting the vehicle, then removing the wheel and tire assembly and the trunk side cover to remove and install the shock absorbers on Deville and Fleetwood models. Disconnect the electronic level control airline from the strut, making sure to clean the connector and surrounding area before squeezing the spring clip to release the connector. If equipped with Computer Command Ride, detach the electrical connector; then go ahead to remove the strut tower mounting nuts from inside the trunk. Remove the bolts, washers and nuts from knuckle and stabilizer bar bracket in order to free up the strut. When installing strut ensure wiring is upright and centered on strut mount if equipped with Computer Command Ride. Strut tower mounting nuts tightened to 19 ft. lbs. (25 Nm) and strut-to-knuckle nuts tightened to 140 ft. lbs. (190 Nm). Lubricate air line O-rings with lubricant, then push air line into fitting while connecting it fully into housing opening wetting rings of fitted up pipe fastener. Put back electrical connector in case of installation of computer command ride system in car model being repaired in this very moment before you mount a rack or pinion gear device which you have already finished doing by now; finally set up a wheel on a hub interfaced with brake booster installed earlier than lowering down your car when rear wheel alignment has been checked again for fulfillment of set norms of technical characteristics for these cars having self-leveling suspension systems in them (only for certain years). For 1990-92 Eldorado & Seville Models- raise & safely support vehicle, remove wheel & tire assembly, detach shock absorber electrical connector from rear suspension support(4.6L engine), support lower control arm with suitable jack to relieve spring load, remove shock absorber lower mounting nut&bolt, detach electrical connector from top of shock absorber(4 .9L engine), disconnect the air line from the shock absorber, making sure to clean connector and surrounding area, rotate the spring clip for releasing the connector lock. Remove upper mounting nut; retainer and insulator then compress shock absorber by hand and remove it through upper control arm. When installing shock absorbers, inspect upper and lower insulators for damage and replace as necessary. Position shock absorber on suspension support moisten air line O-rings push air line and connector fully into fitting. If equipped attach electrical connector, tighten upper shock absorber nut to 55 ft. lbs. (75 Nm) and lower shock absorber nut to 75 ft. lbs. (102 Nm). Install wheel and tire assembly then lower vehicle finally. For 1993-98 Eldorado & Seville Models- raise & safely support vehicle, remove wheel & tire assembly, disconnect electronic level control height sensor link if removing left strut; install two lug nuts to hold rotor on hub & bearing assembly, remove mounting bolt at strut if equipped with stabilizer bar; remove rear brake caliper loosening parking brake cable first that requires removing cable support bracket after you suspend caliper in such a way so it would not hang down from its housing more than needed during this process as well. Loosen but do not remove knuckle pivot bolt at outer end of control arm; support outer end of control arm with suitable jack or jackstand if necessary. If equipped with Computer Command Ride detach electrical connector at top of strut; disconnect air line from strut ensuring cleaning connector including surrounding area as well as rotating spring clip to release connector lock. Remove upper strut rod cap; mounting nut, retainer, insulator then slowly lower jack or remove jackstand in order relief spring pressure. Compress strut by hand then rotate strut & knuckle assembly outwardly for removal from knuckle-installed latterly when putting back steering system gears previously assembled just like undercarriage booster which you've already done before that by now; lastly perform putting wheel onto hub interfaced with a differential gear set having its rear wheel alignment checked once again meeting all the necessary manufacturer's specifications for these vehicles which incorporate this unit as part of their suspension system (for specific occurring years only). When installing shock absorbers, inspect upper and lower insulators for damage, and position strut fully in knuckle with tang on strut bottomed in knuckle slot. Install knuckle pinch bolt (tighten it), install lower insulator on strut, position strut rod in suspension support, then install upper strut insulator; retainer and nut. Lubricate air line O-rings with lubricant; rotate spring retainer to engaged position before pushing air line into fitting until it is fully locked up. For computer command ride only, attach electrical connector if any & reinstall wheel and tire assembly, later lower vehicle accordingly.