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2007 Chevrolet Silverado and GMC Sierra - First Impressions

707 messages,  Last post on Mar 04, 2008 at 11:34 AM

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What is this discussion about? Chevrolet Silverado 1500, GMC Sierra 1500, Truck

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#346 of 707 Re: 2007 Chevy First Impressions [nascar57] by vmax2007 Mar 19, 2007 (2:06 pm)
Replying to: nascar57 (Mar 19, 2007 8:38 am) Congrats on your new pickup. I couldn't agree with you more. Replies to this message: paisan (Mar 19, 2007 2:35 pm) rockylee (Mar 19, 2007 5:57 pm)
#347 of 707 Re: 2007 Chevy First Impressions [vmax2007] by paisan Mar 19, 2007 (2:35 pm)
Replying to: vmax2007 (Mar 19, 2007 2:06 pm) You do know that you should NEVER use cruise control on a car with under 1000 miles on it. You need to vary the RPMs for the first 1k miles and not rev over 4k with it during break-in.   -mike Replies to this message: rockylee (Mar 19, 2007 5:57 pm)
#348 of 707 Re: 2007 Chevy First Impressions [paisan] by rockylee Mar 19, 2007 (5:57 pm)
Replying to: paisan (Mar 19, 2007 2:35 pm) Huh ? Who told you this hawg-wash ? Break in is 500 miles and I've never heard anyone ever tell me to not use my cruise control during break-in.   Rocky
#349 of 707 Cruise Control by nascar57 Mar 19, 2007 (6:14 pm)
I also have never ever heard this about using the cruise control. Although I do know about the deal regarding not revving over 4k. Would like to hear more about this little idea about the cruise control. Replies to this message: paisan (Mar 19, 2007 6:31 pm)
#350 of 707 Re: Cruise Control [nascar57] by paisan Mar 19, 2007 (6:31 pm)
Replying to: nascar57 (Mar 19, 2007 6:14 pm) You are supposed to vary the throttle during breakin. That's what I've read everywhere and that's what I've done. Constant RPMs has the rings seat in-properly due to constant RPMs. Cruise control has you at constant RPMs.   -mike
#351 of 707 Cruise by nascar57 Mar 19, 2007 (6:47 pm)
But even if you were driving a trip such as I have been, if you were not using cruise control, your RPMS wouldnt be varying too much since you would be right at the speed limit most of the time. Town driving and getting up to speed do give you some variation in RPM ranges. Replies to this message: paisan (Mar 19, 2007 7:01 pm)
#352 of 707 Re: Cruise [nascar57] by paisan Mar 19, 2007 (7:01 pm)
Replying to: nascar57 (Mar 19, 2007 6:47 pm) Right you aren't supposed to do extended highway trips during the break-in period usually the first 1k miles or so.   -mike
#353 of 707 Well this isn't the case with GM products........ by rockylee Mar 19, 2007 (7:45 pm)
Rocky Replies to this message: paisan (Mar 19, 2007 7:55 pm) rockylee (Mar 19, 2007 9:42 pm)
#354 of 707 Re: Well this isn't the case with GM products........ [rockylee] by paisan Mar 19, 2007 (7:55 pm)
Replying to: rockylee (Mar 19, 2007 7:45 pm) I didn't know GM had different combustion engines than the rest of the world. IIRC they actually still have pushrod engines...   -mike Replies to this message: rockylee (Mar 19, 2007 9:42 pm)
#355 of 707 Re: Well this isn't the case with GM products........ [paisan] by rockylee Mar 19, 2007 (9:42 pm)
Replying to: paisan (Mar 19, 2007 7:55 pm) Well 1K break in period ? No cruise control driving, Come-on. It's not like these engines are that touchy. I've always have gotten on my engines a little bit after I got a couple of hundred miles on it. This isn't the 1960's   Rocky

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