S15/T15 Jimmy 2WD L4-119 1.9L VIN A 2-BBL (1983)
3.
THE ELECTRONIC CONTROL MODULE (ECM) WIRING HARNESS CLIP may not be properly attached at the transmission bellhousing bolt
allowing contact with the floor pan/front of dash area. This sound may be amplified by the HVAC ductwork.
4.
LOOSE WIRES/HARNESSES may be tapping against the engine/passenger compartment wall (cowl).
5.
LACK OF DOOR HINGE LUBRICATION - Insufficient lubrication may create a binding/squeaking condition.
6.
AN ECM BRACKET "ITCH" sound may occur if the ECM moves within its mounting bracket.
Refer to the "Unwanted Sound: Squeaks and Rattles Diagnosis and Correction" Reference Manual.
7.
AN ASH TRAY BRACKET RATTLE coming from the ash tray or radio area of the instrument panel may occur if the bracket is loose and
vibrating against the I/P.
Refer to the "Unwanted Sound: Squeaks and Rattles Diagnosis and Correction" Reference Manual.
8.
AN AIR VENT "POP" may occur if the louvered vent and A/C duct rub together.
Refer to the "Unwanted Sound: Squeaks and Rattles Diagnosis and Correction" Reference Manual.
9.
HOOD "FLUTTER"/RATTLE may occur if there is movement in the hood hinge attachment to the truck frame. Sound may accompany the hood
movement.
Refer to GMC Truck Service Bulletin Number 91-10-20, Group 10-Body Section, Corporate Number 061006, dated September 1990.
Also refer to "Unwanted Sound: Squeaks and Rattles Diagnosis and Correction" Reference Manual.
Illustrations and instructions are available in the Revised "Unwanted Sound: Squeaks and Rattles Diagnosis and Correction" Reference Manual Number
GMC TT-91-03-2. The Reference Manual was provided to dealers in 1991. Order forms for additional Reference Manuals (with video) can be procured
by calling (313) 456-4679.
