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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), GMC Mechanic
Category: GM
Satisfied Customers: 5783
Experience:  GM Grand Master Technician 2007. 14 years experience.
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GM 3500 hd: i Have a 1656 code on my 1999 3500 hd chevy truck

Customer Question

i Have a 1656 code on my 1999 3500 hd chevy truck it a 5.7 deisel
Submitted: 1 year ago.
Category: GM
Expert:  Gary replied 1 year ago.
Welcome! My name is ***** ***** I will do my best to assist you with this problem.
is this a 6.5 engine ?
what is the 8 digit of the VIN number ?
has anything been done yet to correct this issue yet ?
Customer: replied 1 year ago.
No still have code waiting for answer
Expert:  Gary replied 1 year ago.
and i am awaiting the answers to what i asked youis this a 6.5 engine ?what is the 8th digit of your VIN number ?can not give any kind of answer until we have all the information
Customer: replied 1 year ago.
yes 6.5 vin F VIN # *****
Expert:  Gary replied 1 year ago.
is the wiring to the waste gate solenoid good ?does the pink wire with the key ON show 12 volts at the waste gate solenoid terminal in the connector ?has the solenoid be replaced yet ?
Customer: replied 1 year ago.
sorry I do not know the answer or where the waste solenoid is
Expert:  Gary replied 1 year ago.
# ***** in this picture is the waste gate solenoidsee if with the key ON the pink wire shows 12 volts at it