654 messages,
Last post on Jun 24, 2012 at 9:26 PM
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Chevrolet Express, GMC Savana, Chevrolet Express Cargo, Chevrolet Sportvan, Chevrolet Chevy Van, Chevrolet Chevy Van Classic, Van
#651 of 654 Re: 2003 ex. 3500 check engine light at 70 mph [carpetguy1]
by wikinger
Jun 24, 2012 (5:49 am)
Hi, check ur transmissionoiltemprature!
Check Transmissionoil! Change it, or refill to max!
#652 of 654 Re: 2003 ex. 3500 check engine light at 70 mph [carpetguy1]
by tbb2
Jun 24, 2012 (11:13 am)
I do not have personal experience with this but have a recall of reading something about oil pump problems that occurred under load ... like when you are moving 70 MPH. Checking your engine and transmission oils and filters are the first step. If they are okay I would then look at what is needed to inspect the oil pump.
#653 of 654 Re: 2003 ex. 3500 check engine light at 70 mph [tbb2]
by carpetguy1
Jun 24, 2012 (9:25 pm)
THANKS!!!
#654 of 654 Re: 2003 ex. 3500 check engine light at 70 mph [wikinger]
by carpetguy1
Jun 24, 2012 (9:26 pm)
THANKS!!!