I figured out the pcm problem with my 97 jeep grand cherokee laredo and its a simple fix
BE SURE TO CHECK OUT PART 2
Bolt here: https://www.motorcycle-superstore.com/2/9/436/41826/ITEM/Bolt-Motorcycle-Hardware-Hub-Savers-Sprocket-Bolt-Kit.aspx?SiteID=SMPR_YT_VD_02_14_BoltHubSaversSprocketBolt&WT.mc_ID=14004
Hub-Savers are the strongest, most complete sprocket fasteners available and have been developed and tested at the professional level in both motocross and off-road applications. Sprocket bolts are a critical fasteners so be sure you have the best on the market.
This kit includes six class 10.9 yellow zinc plated steel sprocket bolts with factory style metal-locking or “Fuji” nuts. Each sprocket bolt has medium strength threadlock patches applied for a double-lock. Threadlock liquifies and anaerobically seals when the bolt is tightened. Also available in black and silver zinc finishes.
Features:
-Full set of high strength sprocket bolts and 12mm Fuji-lock hex flange nuts
-Includes 8mm tool insert for socket wrenches
-Grade 10.9 steel resists stretch and sheer forces
-Fits all Japanese and most European dirt bikes
-Bolt Motorcycle Hardware meets or exceeds OEM specs
-8mm tool insert for socket wrenches