Rebuild/Upgrade Service for one '03-'09 Cadillac XLR Decklid (Trunk Lid) Cylinder. Replaced and improved rod seal, piston seal, cap seal, gland seal, wiper, and port seals make this part better than a brand new one, with an expected service life of 30-50 years.
Send in your part for rebuild service, or order directly from our stock with core exchange for $200 + $220 deposit.
This product is no longer in stock
You remove your cylinder(s) you would like to have rebuilt, and send them to us. Core exchange (where we send cylinders from our inventory first) is available only for full sets of eight cylinders. Consider having all eight cylinders rebuilt & upgraded at the same time, because they all fail in fairly short order, and you save a lot of labor and frustration this way!
This is a rebuild/upgrade service for a single '03-'09 Cadillac XLR Decklid Hydraulic Cylinder for the convertible top system. The XLR has two of these cylinders, p/n 88957088. Also known as 1609-030-B (easily misread as 1689-030-B, engraved on the cylinder, second line), or 1609-030-C or CTS 17006230200. They actuate the trunk lid by lifting it out of the top's way.
The original seals in these cylinders are made of a material that fails within 10-15 years, or faster if exposed to contaminants or water in the convertible top hydraulic fluid. Top Hydraulics replaces the original steel gland inside the cylinder with a new, CNC-machined one that accommodates more sophisticated rod seal, gland seal, and wiper seal for maximum service life of the cylinder. Replaced and improved rod seal, piston seal, cap seal, gland seal, wiper, and port seals make this part better than a brand new one, with an expected service life of 30-50 years under normal circumstances.
In most cases, the first leak on the original cylinders will be through the mounting hole at the bottom of the cylinder, making it appear like a leak from one of the hydraulic hoses. Next, they will typically leak from the top, and ultimately they will develop internal bypasses. Even brand new cylinders from the dealer can fail again within a short time frame if the hydraulic fluid in your system is contaminated. The rebuild & upgrade service from Top Hydraulics will avoid these issues, because our seals are inert to almost any contamination.
These cylinders are easy to remove from the trunk lid, once the trunk lid has been lifted. Remove the mounting pin first that goes through the clevis (fork) first, and retract the shaft. Then remove the bottom pin that goes through the cylinder housing. Last, remove the hydraulic line clips by sliding them in the cylinders rail. Hang on to the clips, so that they don't get lost. Pull out the hydraulic lines - we suggest sticking the hose ends into a ziplock bag. Cycle the fluid out of the cylinder(s), package well, and send to Top Hydraulics.
Turn around time average is one to two days. Return shipping in the US via USPS Priority Mail ($10 per order) or FedEx Priority Overnight ($40 per order).
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