1997 GMC Suburban 2500 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1997 GMC Suburban 2500
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1997 GMC Suburban 2500 ProblemsCheck Engine Light With Code P1870
Vehicles equipped whit a 4 speed automatic transmission may develop a harsh 1-2 shift and/or illumination of the Check Engine Light with code P1870 stored. This can be caused by wear of the bore for the TCC isolator and regulator valves in the valve body. This condition does not commonly occur until the transmission reaches normal operating temperature. If the valve body is worn, replacement will be necessary to correct this concern.
One or more fuel injectors may become stuck closed causing an engine misfire and the Check Engine Light to illuminate. Our technicians tell us that this problem can be caused by some fuel additives. There are special procedures which may be able to restore the affected injector. If this fails the affected injector must be replaced.
The alternator may fail causing the battery to go dead, or an abnormal noise may develop. The dash warning light may or may not illuminate. A failed alternator will require replacement.
1997 GMC Suburban 2500 Questionsi recently changed the cam shaft in my 1997 7.4 motor (1 answer)
while i had it apart icranked it over to line up the timing gears. nw im having problems geetting the dist. instaled right , i brought number onepiston up to tdc on the compression stroke, but dont knoe how to set the dist. IE where do i point the rotor. thank you
I would like to know what the normal running temperature is for this engine because I just bought this suburban from a unscrupulous private owner anyhow, it runs at 220 degrees and I'm sure this is too hot. There is no visible leak for the water just I'm thinking this is either a head gas...
Changed fuel filter little better mechanic says problem is pump should i change it, no check engine lights either