CLASS RACER FORUM - View Single Post - GM 700-R4 questions.....

ss wannabee · 08-08-2010, 08:45 PM

Forgot to mention but the tech at the garage next to work has been too busy to scan the vehicle. So I tried the "old-school" method with a paper clip and counted the flashes. What I got was Code 32...which is an EGR system malfunction. I watched through 3 or 4 cycles to make sure it was the only code....It was....NOT sure if the scan tool could "find" more...but it can give engine temp,TPS voltage, and other stuff that might be relevant. I'll still try to have that done. I don't think this is related to the trans problems but.....I want to point out that this code "sets" ONLY when I attempt to drive the Blazer on the highway...and the engine rpm is over 3,000...heading to 4,000 when the overdive doesn't work. When the o.d. is working properly, I don't think the engine speed goes over 3 grand...and I highway drive at the speed limit...I "baby" the vehicle...Whoever mentioned "easing" up on the throttle to get overdrive...I've tried that recently...NO results lately...although it has worked in the past.... I don't think the converter is clogged...perhaps the opposite....NOW it's time to try some things.....Thanks again, Guys!

08-08-2010, 08:45 PM	#7
ss wannabee Senior Member Join Date: Jun 2005 Posts: 663 Likes: 0 Liked 7 Times in 7 Posts	Re: GM 700-R4 questions..... Forgot to mention but the tech at the garage next to work has been too busy to scan the vehicle. So I tried the "old-school" method with a paper clip and counted the flashes. What I got was Code 32...which is an EGR system malfunction. I watched through 3 or 4 cycles to make sure it was the only code....It was....NOT sure if the scan tool could "find" more...but it can give engine temp,TPS voltage, and other stuff that might be relevant. I'll still try to have that done. I don't think this is related to the trans problems but.....I want to point out that this code "sets" ONLY when I attempt to drive the Blazer on the highway...and the engine rpm is over 3,000...heading to 4,000 when the overdive doesn't work. When the o.d. is working properly, I don't think the engine speed goes over 3 grand...and I highway drive at the speed limit...I "baby" the vehicle...Whoever mentioned "easing" up on the throttle to get overdrive...I've tried that recently...NO results lately...although it has worked in the past.... I don't think the converter is clogged...perhaps the opposite....NOW it's time to try some things.....Thanks again, Guys!