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Sounds like your ECM / ECU may need to be re-flashed at the dealer, have you tried pulling the codes? The check engine light does NOT need to be on for it to have codes stored. The starting issue could be caused by the TPS / MAF / MAP sensors, the flashing of the odometer could be something with your PSOM chip or your VSS sensor. Pull the codes see what you get.
Hi Peter, If the vehicle turns on the starter all the time, and sometimes starts and other times fails, check the fuel filter for leakage. Sometimes air gets into the fuel system. When it gives problems, open the bonnet (hood) and have someone pump the pump on top of the filter housing. If it feels soft when beginning to pump, I would suspect either a leakage on the fuel line or the filter housing. If you need to replace the housing and filter, remember to fill the replacement filter with clean diesel fuel first. the glow plugs can also cause problems if one or more have burned out. Regards John
if it turns over but doesnt run, check the hall pickup in the distributor. if it wont turn over at all, its the brown goundwire connected in the engine compartment on the drivers side halway between the starter motor and the master cylinder.
The starter is most likely the problem,tap on the starter lightly with a hammer while trying to start the engine,dont get run over doing this it will take two people,if the engine starts,the starter needs replacing.
yes the gauges should go up and down they are selftesting your starting problem could be starter related they were having problems with those, also try turning ignition to the on position for 3 seconds before trying to start,also gm has a tsb for hard start issues
you can replace the cylinoid,but I prefer to change the whole thing specially that it seems like starter drag when you buy the new starter the cylinoid will be built on the new starter,if you change the cylinoid itself,and you still need a starter youll have to buy the starter and cylinoid as one unit,and they wont take the cylinoid back that you broke,but either way I would pull the starter and bring it down to an autozone and have it checked for free,if this helps please give me a fix ya