1996 GMC Jimmy Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1996 GMC Jimmy
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1996 GMC Jimmy 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.
It is common for the fuel level sensor in the fuel tank read the fuel level incorrectly. The sensor must be replaced to correct the condition. Our technicians recommend having the complete fuel pump module replaced on high mileage vehicles.
1996 GMC Jimmy Questionsmy transfer is leaking out of drive line is this a hard fix (1 answer)
I've replaced cap and sprayed lab on cap+wires+plugs and problem still there. Truck is in shop now and there telling me it's my timing chain and gas is going into the oil. They said to fix problem it will cost $1900...ughh does the sound right?